AGCO Allis 6670 Tractor 69 hp Specifications, Features, and Performance Overview
AGCO Allis 6670 Tractor 69 Hp
The AGCO Allis 6670 tractor is notable for its reliable performance and practical features. It is designed for mid-size farming jobs, produced by a well-known global company, and supported by a clear manufacturing and identification history.
| Feature | Details |
|---|---|
| Manufacturer | AGCO (AGCO Allis) |
| Model Number | 6670 |
| Series | Mid-range AGCO Allis / Related to Deutz-Allis |
| HP Rating | 69 horsepower |
| Production Years | Mid-1990s |
| Factory Location | Various AGCO/Deutz-Allis facilities |
| Original Price | Varies by region/year, not widely referenced |
| Serial Number | Plate location on tractor’s frame |
Production & Identification
The AGCO Allis 6670 was produced in the 1990s, offering around 69 horsepower. It targeted farmers looking for a reliable utility tractor with enough power to handle most field and yard tasks.
You can identify this model by its distinct AGCO Allis design, orange and black color scheme, and the clear model number displayed on its body. The tractor typically features a cab or open station and is recognized for its practical size and build.
The 6670 has a reputation for durability and straightforward operation. The tractor’s power take-off (PTO) rating is about 63 HP, and the tested drawbar power is approximately 56 HP.
It is set apart from other series by its mid-sized frame and specific engine performance.
Manufacturer / Brand
AGCO (Allis Gleaner Corporation) is the manufacturer, and AGCO Allis is the brand under which the 6670 was sold. AGCO acquired parts of Allis-Chalmers and Deutz-Allis, continuing their legacy through the AGCO Allis line.
The AGCO Allis 6670 fits into AGCO’s strategy of mixing reliable engineering with updated technology. The brand combines influences from earlier Allis-Chalmers and Deutz-Allis models.
You benefit from a tractor backed by AGCO’s global support network, with parts and service widely available. The AGCO Allis brand is respected for building tough and dependable farm machinery.
Model Number / Series
The model number for this tractor is 6670. It falls into the AGCO Allis mid-range series, a group of tractors that replaced many earlier Deutz-Allis and Allis-Chalmers tractors after AGCO’s corporate changes in the late 1980s and early 1990s.
While the 6670 stands on its own, it shares several components and styling cues with related models in the AGCO Allis and Deutz-Allis lines. The number “6670” refers to its approximate power output and position within the range.
This model is also known for its versatile design, which makes it suitable for multiple attachments and farming jobs. Knowing the model number helps you locate the right manuals, parts, and support information.
Factory Of Manufacture
Production took place at AGCO and Deutz-Allis manufacturing plants. These factories are known for their rigorous quality controls and ability to produce high volumes for the North American and global markets.
Most AGCO Allis 6670 tractors were assembled in facilities in North America. Some components may have been produced in Europe, as AGCO often used international supply chains.
Factory construction focused on reliability, and most tractors were shipped with options for open stations or cabs. The manufacturing plant listed in original documents may give you clues about your specific tractor’s build and features.
Years Produced
The AGCO Allis 6670 was introduced in the mid-1990s. Specific records list 1996 as a known model year for the 6670, but production may have started slightly earlier and continued into the late 1990s.
During these years, the farm machinery industry was shifting rapidly. AGCO Allis models such as the 6670 reflected updated standards in emissions, comfort, and tractor technology.
Knowing your tractor’s production year can help with finding the right replacement parts, as some features and systems varied from year to year.
Original List Price (Launch Year)
There is no widely published specific launch price for the AGCO Allis 6670. Tractor prices in the 1990s depended on features, region, and dealer markups.
Based on similar mid-range tractors from the period, you might expect the original list price to fall somewhere between $25,000 and $35,000 in the U.S. Options like a factory cab, extra hydraulic outlets, and wheel options could change the price.
Older sales brochures or AGCO dealer records may be your best source for an exact list price.
Serial-Number Location
The serial number is crucial for identifying your AGCO Allis 6670. You can find this number on a metal plate, usually affixed to the tractor’s main frame or chassis.
Common locations for AGCO Allis serial plates are on the right side, below the operator’s station, or near the engine compartment. Having the serial number helps you confirm the production date, track down correct parts, and verify ownership history.
Refer to the operator’s manual or a dealership if you are unsure about identifying the plate or serial number location.
Quick Reference Table: AGCO Allis 6670 69 HP Tractor
| Topic | Key Details |
|---|---|
| Production Years | Around 1995-1997 |
| Engine Power | 69 HP (engine), ~63 PTO HP |
| Manufacturer/Brand | AGCO Allis (AGCO, evolved from Deutz-Allis) |
| Model Number / Series | 6670, mid-range AGCO Allis series |
| Factory Location | North America (AGCO, Deutz-Allis plants) |
| Original List Price | Estimated $25,000-$35,000 (1990s, US) |
| Serial Number Location | Metal plate on main frame or under cab area |
Engine Specifications
You can expect a diesel engine with a balance of power, efficiency, and straightforward design. The AGCO Allis 6670 uses a mid-sized engine that delivers dependable performance for field and utility work.
Engine Make & Model
The AGCO Allis 6670 is powered by the SLH (Same Lamborghini Hurlimann) 4.0L engine. It is a 4-cylinder diesel engine known for its robust build and reliability in agricultural conditions.
This engine comes from a family of engines that are widely used in European tractors. The focus is on durability and ease of maintenance.
You get a proven platform designed to handle demanding work loads while keeping operating costs in check. The SLH series engines use direct injection for improved fuel efficiency and performance.
This engine’s straightforward design promotes longer service intervals and fewer breakdowns.
Fuel Type & Emissions Tier
The tractor uses regular diesel fuel. There is no facility for using gasoline, biodiesel, or alternative fuels.
When it was manufactured, emissions regulations weren’t as strict as they are today. The engine does not have aftertreatment devices like DEF (diesel exhaust fluid) systems or particulate filters.
The lack of advanced emissions controls means fewer maintenance needs. However, it does result in higher emissions compared to modern standards.
If you want a machine for areas without stringent emissions regulations, this setup avoids potential complications tied to newer emissions technology.
Cylinders / Displacement
You get a 4-cylinder configuration with this engine. The total displacement is 4.0 liters, or approximately 244 cubic inches.
Four cylinders strike a balance between fuel economy and power output. The even firing order of a four-cylinder diesel also results in smooth operation, reducing vibrations during use.
The 4.0-liter displacement allows the engine to build torque steadily, making it suitable for plowing, haying, and loader work. Durability is a key advantage here.
Larger displacement and fewer cylinders than high-revving engines mean less stress per cylinder and typically longer engine life.
Rated Horsepower (Gross & Net)
The AGCO Allis 6670 offers a rated engine power of 69.05 horsepower (51.5 kW) as the gross output. The rated power at the PTO (Power Take Off), which is closer to what you can actually use for field work, is about 63.1 horsepower (47.1 kW).
At the drawbar, the tested output is around 55.65 hp (41.5 kW), reflecting power losses through the drivetrain. The difference between gross and net power shows how much energy is used for internal functions and parasitic loads.
Here’s a quick comparison:
| Power Measurement | Value |
|---|---|
| Gross Engine Power | 69.05 hp |
| PTO Power (claimed) | 63.13 hp |
| PTO Power (tested) | 63.12 hp |
| Drawbar Power | 55.65 hp |
These levels are sufficient for most mid-size farm tasks and utility applications.
Peak Torque (Nm @ Rpm)
Peak torque occurs at a lower RPM, which is typical for diesel engines in this size class. Most similar engines in this range produce about 230 to 260 Nm (Newton-meters) of torque at around 1,400–1,600 rpm.
This low-end torque helps the tractor work efficiently under load. You’ll notice better pulling performance and more responsive operation with implements.
Peak torque at lower RPM also means better fuel economy during heavy work. If your tasks require sustained pulling, like tilling or baling, this engine delivers the right torque band for steady, reliable performance.
Compression Ratio
The SLH 4.0L engine in the AGCO Allis 6670 uses a 17:1 compression ratio. This value is in line with most modern diesel tractor engines designed for durability and effective combustion.
A higher compression ratio allows the engine to extract more energy from diesel fuel. This improves both power output and fuel efficiency.
It also enables reliable cold-weather starting, which is important if you plan to run the tractor through the winter. Consistent high compression helps the engine maintain steady power even as it ages.
This ratio is a deliberate balance between output and stress on internal parts.
Cooling System & Capacity
The AGCO Allis 6670 uses an air-cooled diesel engine rather than a liquid-cooled system. This is less common in tractors of this size, but it simplifies maintenance and reduces the risk of overheating caused by coolant leaks.
You don’t have to monitor coolant levels or repair radiators. Air cooling uses fins on the engine block and fan-driven airflow to keep temperatures in check.
Although air cooling means potentially noisier operation and, in extreme climates, less consistent temperature control, it does eliminate one major category of maintenance concerns. The engine oil capacity is 9.7 quarts (9.2 liters), ensuring good lubrication for extended field and load work.
Engine Specifications Summary Table
| Category | Specification |
|---|---|
| Make & Model | SLH 4.0L (Same Lamborghini Hurlimann) |
| Fuel Type | Diesel |
| Emissions Tier | Pre-2000s; no aftertreatment |
| Cylinders | 4 (inline) |
| Displacement | 4.0 liters (244 cubic inches) |
| Rated Power (Gross) | 69.05 hp (51.5 kW) |
| PTO Power (Claimed) | 63.13 hp (47.1 kW) |
| Drawbar Power (Tested) | 55.65 hp (41.5 kW) |
| Peak Torque | ~230–260 Nm @ 1,400–1,600 rpm |
| Compression Ratio | 17:1 |
| Cooling System | Air-cooled |
| Oil Capacity | 9.7 quarts (9.2 liters) |
Power Take-Off (PTO)
The AGCO Allis 6670 tractor comes equipped with a strong and reliable Power Take-Off system. You benefit from solid horsepower, flexible PTO options, and operational speeds suited for a range of attachments.
| Feature | Specification | Details |
|---|---|---|
| Claimed PTO Horsepower | 63.13 hp (47.1 kW) | Supports various implements; suitable for heavy tasks |
| PTO Type | Independent (Hydraulic) | Hydraulic wet disc clutch; easy engagement/disengagement |
| PTO Speeds | 540 / 1,000 rpm | Standard compatibility for many implements |
Claimed PTO Horsepower
The AGCO Allis 6670 has a claimed PTO horsepower of 63.13 hp (47.1 kW). This power level allows you to handle a wide variety of jobs, such as powering mowers, balers, and tillers.
You can operate heavier implements without overloading the tractor. The tested numbers closely match the claimed rating, indicating consistent performance.
Having over 60 hp at the PTO means you can expect reliable delivery of power for demanding applications. This is especially important if you use larger or multiple PTO-driven tools.
PTO Type (Independent / Live / Economy)
The PTO on the AGCO Allis 6670 is an independent type with a hydraulic wet disc clutch. You can engage or disengage the PTO at any time, no matter the tractor’s movement or travel direction.
This feature is highly convenient when you need to start or stop an implement quickly. A wet disc clutch offers durability and smoother operation compared to dry types.
You get less wear and longer life for your PTO system because the clutch is kept lubricated. With the independent PTO control, you have more flexibility during fieldwork or when switching between tasks.
There is no need to operate the tractor’s main clutch to operate the PTO, which makes your work simpler and faster.
PTO Speeds (540 / 1 000 Rpm)
The AGCO Allis 6670 offers two PTO speed options: 540 rpm and 1,000 rpm. This dual-speed setup gives you the flexibility to use the right implements for each job.
You can select 540 rpm for common tasks requiring lower PTO speed, such as small rotary cutters or post-hole diggers. When you need to run larger implements, like some balers or grain augers, the 1,000 rpm setting is available for more power.
Switching between these speeds is straightforward, letting you optimize equipment performance without hassle. Most modern and older attachments will fit one of these speeds, so compatibility is rarely an issue.
Transmission & Drivetrain
The AGCO Allis 6670 offers straightforward features in its transmission and drivetrain. You get proven technology for reliable field and transport work, with enough versatility for a range of farming jobs.
Transmission Type (Syncro, Powershift, CVT, HST)
The AGCO Allis 6670 comes with a partial powershift transmission. This design gives you five gears (1-5) within three ranges (Low, Medium, High) and an extra high-low power shift built into each range.
You control gear changes through a traditional gear shift, but the power shift function lets you toggle between two gears under load. This helps you adjust quickly for changes in field conditions without stopping.
The transmission offers a smoother, more efficient driving experience. No CVT (continuously variable transmission) or hydrostatic (HST) options are available.
The mechanical system is robust, simple, and built for longevity with fewer electronic parts than newer models.
Number Of Gears / Ranges
The 6670 features 30 forward and 30 reverse gears. These are divided into five main gears, three ranges (Low, Medium, High), and high-low power shift.
The design means you have wide gear selection for both fieldwork and transport. This variety helps you find the right speed for tillage, planting, or hauling.
The gear ratios are evenly spaced to give you fine control over ground speed. Reverse gears match the forward gears for flexibility when backing up.
This is useful for loader work and precise maneuvers in tight spaces. The transmission’s layout supports quick, easy shifting with minimal effort.
Top Transport Speed
The AGCO Allis 6670 can reach a top road speed of about 18 to 20 mph (29 to 32 km/h), depending on tires and settings. This speed makes highway transport practical for moving between fields or to the barn.
You get steady acceleration in each gear range. Stability at top speed is good, but always consider road and field conditions when moving heavy towed implements.
While not as high as some modern tractors with faster gearboxes, the top speed still covers most farm transport needs. You can safely drive on public roads with proper lighting and caution.
Drive (2WD / 4WD / AWD)
Most AGCO Allis 6670 tractors are 2WD (two-wheel drive) models. This setup offers solid performance for plowing, baling, and general row crop work on flat or moderately hilly ground.
A few versions may come with 4WD (four-wheel drive), but these are rare. If your 6670 is 2WD, front-wheel assist (FWA) is not available.
With 2WD, traction depends on rear tire size and weight. In muddy or uneven fields, extra ballast may help improve grip.
For most tasks, 2WD is adequate, but certain jobs benefit from extra traction found in larger 4WD models.
Differential-Lock & Final Drives
The AGCO Allis 6670 includes a mechanical rear differential lock. Engaging the diff-lock ensures both rear wheels spin together, preventing slippage in tough spots or soft ground.
You control the differential lock with a pedal or lever near the operator’s seat. Use it when working in low-traction conditions, but disengage during turns to protect drivetrain components.
Final drives are simple and heavy-duty, designed for minimal servicing. The setup is geared for durability under heavy loads and extended field work.
Table: AGCO Allis 6670 Transmission & Drivetrain Overview
| Feature | Specification / Description |
|---|---|
| Transmission Type | Partial powershift (5 gears, 3 ranges, hi/lo shift) |
| Number of Gears/Ranges | 30 forward / 30 reverse (5×3 ×2 powershift) |
| Top Transport Speed | 18-20 mph (29-32 km/h) |
| Drive | 2WD (most common), rare 4WD models |
| Differential Lock | Mechanical rear, operator-controlled |
| Final Drives | Heavy-duty, simple gear-type |
| Reverse Gear Availability | Full set (30) matching forward gears |
| CVT / HST options | Not available |
| Traction Enhancement | Weighted rear tires/ballast (if needed) |
| Controls | Manual shift with power shift toggle |
Steering & Brakes
On the AGCO Allis 6670 tractor, steering and braking are designed for smooth operation, safe control, and reliable stopping power in the field or on the road. Both systems use proven technology to ensure ease of use, dependable performance, and reduced operator fatigue throughout the workday.
Steering System (Hydrostatic / Power-Assisted / Mechanical)
The AGCO Allis 6670 tractor features a hydrostatic power steering system. This setup uses hydraulic pressure to make turning the steering wheel easier, especially when carrying heavy loads or making quick maneuvers.
You do not need to put in much physical effort, even when the front axle is loaded. Hydrostatic steering means that small inputs on the wheel give a smooth, quick response at the wheels.
This system helps you avoid oversteering while providing good feedback and stability when driving at higher speeds. The tractor’s power-assisted design limits fatigue so you can work longer without straining your arms or shoulders.
Routine maintenance usually includes checking fluid levels and inspecting hoses for leaks. If you notice increased resistance or loose steering, checking the hydraulic system is the first step.
Turning Radius (With Brakes)
The turning radius of the AGCO Allis 6670 tractor is tight for its class, which helps when working in cramped field corners, barns, or narrow lanes. Using the brakes while turning, you can pivot the tractor around a rear wheel, making sharp turns possible.
With brake-assisted turning, pressing the inside brake pedal while steering allows the tractor’s rear tire on that side to slow or stop, helping the tractor spin more easily and reducing the actual turning radius. This is especially helpful when making short turns at the end of rows or small plots.
In regular use, you get more control over your maneuvers, and it’s easier to avoid obstacles or position attachments precisely. You should practice brake-assisted turning to get comfortable with how much brake to apply for different situations.
Service Brakes (Wet Disc, Dry Drum, Etc.)
The AGCO Allis 6670 tractor uses hydraulic wet disc brakes. These brakes are housed in oil, which keeps them cool and well-lubricated during heavy or repeated use.
Wet disc brakes are durable and provide reliable stopping power, especially in harsh, dirty, or wet working environments. Hydraulic actuation means braking can be firm and responsive with little effort from you.
The brake pedals are often split, allowing you to control left and right rear wheels separately for tighter turns or improved traction when one wheel slips. The wet disc setup helps extend the life of the brakes and reduces the need for frequent replacements.
Regular inspection is important, but these brakes often need less adjustment than dry drum brakes.
Parking Brake Type
The parking brake on the AGCO Allis 6670 is typically a mechanically actuated hand lever connected to the rear brakes. When engaged, it locks the rear wheels to hold the tractor securely in place, even on slight slopes or when parked with an implement attached.
You engage the parking brake by pulling the lever, which uses a mechanical linkage to keep the brake discs pressed together. This system is simple and dependable, offering peace of mind when leaving the tractor unattended.
Always release the parking brake before operating to avoid accidental wear or overheating of the brake system. Regular checks on the linkage and adjustment keep the system working safely and effectively.
| Feature | Type/Details | Benefits | Maintenance Tips |
|---|---|---|---|
| Steering System | Hydrostatic Power Steering | Easy turning, low fatigue, stable control | Check fluid, inspect hoses |
| Turning Radius (with Brakes) | Brake-assisted tight turning | Maneuverable in tight spaces | Practice technique; inspect brake wear |
| Service Brakes | Hydraulic wet disc | Strong stopping power, low wear | Inspect fluid, check split pedals |
| Parking Brake | Mechanical hand lever linked to rear brakes | Simple, reliable, safe parking | Adjust linkage, test lock strength |
Cab & Operator Station
The AGCO Allis 6670 gives you a practical operator station aimed at comfort and function. Key features include protective structure options, attention to climate control, seating comfort, and consideration for operator noise exposure.
ROPS / Cab Option
The AGCO Allis 6670 was available with either an open ROPS (Roll-Over Protective Structure) or an enclosed cab. The ROPS configuration gives you an open-air work environment, which is helpful for visibility and access.
The cab version offers more shelter, protecting you from weather, dust, and debris. Enclosed cabs provide locking doors and large windows.
These increase safety by reducing exposure to outside hazards. Some models may have basic sound insulation built into the cab panels, further enhancing the work experience.
For safety, both types meet industry standards for rollover protection. Open ROPS models are typically lighter and have easier access for getting on and off the tractor.
The cab adds some weight and may require slightly more headroom in buildings. AGCO Allis made both options to match your working conditions and preferences.
Climate Control (A/C, Heater, Filter)
If you use a cab model, you can expect basic climate control features. Most AGCO Allis 6670 tractors with a cab come with a heater and ventilation as standard.
Air conditioning is available on many models, but may not always be included, so you should check specific units to confirm. A heater makes winter and cold-weather work more bearable.
Air conditioning, if installed, keeps you cooler during hot days, helping you stay productive. Ventilation fans or openings offer airflow and help reduce fog on the windows.
Cab filters are another helpful feature. They cut down on dust, pollen, and other particles entering the operator area.
This can be important if you work in hay or dusty fields. Maintenance for these filters is simple, with easy access panels.
Seat & Suspension
Your comfort during long hours depends on the seat and its suspension. The AGCO Allis 6670 generally includes an adjustable suspension seat.
You can change the seat’s height and position to fit your size and preferences, making the ride more comfortable for different operators. Suspension systems absorb shock from rough terrain.
This limits how much vibration you feel, reducing fatigue. Some seats also have armrests and lumbar support, while the fabric is chosen for durability and breathability.
Entry-level ROPS versions tend to have simpler seats. Cab models often include a higher quality, deluxe suspension seat.
Regular maintenance like cleaning and checking for wear will help the seat last longer and keep you more comfortable.
Noise Level (Db A @ Operator Ear)
Operators of the AGCO Allis 6670 can expect moderate sound levels. In open ROPS models, noise at the operator’s ear is similar to other tractors of the era, often in the 85–95 dB(A) range, depending on engine speed and workload.
Hearing protection is recommended for long use in these conditions. The enclosed cab reduces noise by about 5 to 10 dB(A) in many cases.
This makes conversations, phone calls, or listening to a radio easier. Seals around the cab doors and windows help mute the sound from the engine and transmission.
Regularly checking for loose panels or gaps in the cab will ensure noise control stays effective. Keeping doors and windows closed is important for the best noise reduction and for the full benefit of any climate control features.
| Topic | Type/Feature | Details |
|---|---|---|
| ROPS / Cab Option | Open ROPS | Easy access, open-air, standard rollover protection |
| Enclosed Cab | Weather protection, safety glass, lockable doors, sound dampening possible | |
| Climate Control | Heater | Standard in most cabs, improves winter comfort |
| Air Conditioning | Available, but not always present—check unit | |
| Filter/Ventilation | Reduces dust, pollen; helps visibility; easy maintenance | |
| Seat & Suspension | Basic Suspension Seat | Adjustable, fits different operators, standard on most models |
| Deluxe Seat (Cab) | Better cushioning, armrests, possible lumbar support | |
| Maintenance | Clean, inspect for wear for comfort and lifespan | |
| Noise Level (dB A) | Open ROPS | 85–95 dB(A); use hearing protection during long use |
| Enclosed Cab | 75–90 dB(A); quieter, seals help reduce engine & transmission noise |
Hydraulics
The AGCO Allis 6670 uses an open-center hydraulic system designed for reliability and simplicity. Hydraulic flow, pressure limits, remote valve numbers, and system type all play important roles in how effective and versatile the tractor’s hydraulics are in different field tasks.
System Type (Open-Center / Closed-Center / PFC)
You get an open-center hydraulic system on the AGCO Allis 6670. This type keeps hydraulic fluid moving through the pump and valves at all times, even when not in use.
Open-center systems are easier to maintain and are found on most utility-sized tractors. They use a fixed-displacement pump, which is simpler compared to closed-center or pressure-flow compensated (PFC) types.
This open-center design means there is less complexity, making parts easier to service. The steady flow gives smooth and reliable operation for common tasks such as loader work, lifting implements, or adjusting attachments during field work.
Because the system runs continuously, you need to keep the fluid clean to avoid wear. The system’s design also keeps initial costs lower for replacement parts compared to more complex systems.
Implement Pump Flow (L Min⁻¹)
The hydraulic pump for implements on the 6670 delivers a steady flow. According to available sources, the hydraulic reservoir holds about 13.7 gallons (51.9 liters), but the specific implement pump flow rate is critical for powering tools.
Having a high enough flow rate means your implements respond quickly when you operate the controls. This affects how fast a loader arm lifts or how smoothly a hydraulic cylinder extends or retracts.
Most operations on an open-center system like this will offer a moderate flow, usually around 40–60 liters per minute (exact values may vary based on source or specific country spec). You should check your manual or test the actual flow if you need to run demanding implements to be sure it matches your requirements.
Steering Pump Flow (If Separate)
On many tractors, steering uses a separate pump for better control and steering feel. However, on the AGCO Allis 6670, the hydraulics for steering often share the same main circuit as the implement hydraulic pump.
This means the flow directed to steering is prioritized to maintain safe operation even when the hydraulic demand from implements is high. If you are using the steering while running hydraulic functions, steering usually remains responsive.
When using the steering and implements at the same time, you may notice a slight dip in implement speed if both are in use, but steering is always given priority on most open-center systems. This kind of arrangement favors reliability over high complexity.
Total Combined Flow
Total combined flow refers to how much hydraulic oil passes through both the implement and steering systems together. This helps decide if you can run more than one demanding hydraulic function at once.
On the AGCO Allis 6670, the total combined flow usually ranges from about 45 to 60 liters per minute. This is enough to operate most common tractors’ implements and steering at the same time.
If you try to use several hydraulic tools together, the total flow divides between them. For everyday uses—like loaders, rear remotes, and power steering—the combined flow meets most needs without slowing you down.
System Pressure (Bar / Psi)
System pressure measures how much force the hydraulic system can produce. The AGCO Allis 6670 works with a maximum hydraulic pressure near 180–210 bar (2,600–3,000 psi), depending on precise model year and region.
This level of pressure is typical for tractors in this class. It means you have plenty of power for lifting heavy implements, powering hydraulic motors, or raising rear three-point equipment.
Higher pressure allows you to use bigger cylinders that move heavy loads without needing a very large pump flow. Always make sure hoses, fittings, and cylinders are rated to match or exceed this working pressure to avoid leaks or failures.
Remote Valves (Number & Type)
AGCO Allis 6670 tractors come with two to three rear remote hydraulic valves as standard equipment. These valves are simple, mechanical spool types designed for easy use.
They allow you to operate hydraulic cylinders on implements such as mowers, rakes, loader attachments, or other tools needing hydraulic power at the rear of the tractor. The number of remotes is enough for most farm jobs.
If you need more hydraulic remotes, you may be able to add them as options or aftermarket kits. The remotes use standard quick-coupler fittings, so you can attach and detach hoses without tools.
The valve levers in the cab provide simple, direct control.
| Feature | Details | Notes |
|---|---|---|
| System Type | Open-Center | Simpler design, continuous fluid flow |
| Implement Pump Flow | 40–60 L/min (varies by model/year) | Ensures fast response for implements |
| Steering Pump Flow | Shared or prioritized in main circuit | Keeps steering responsive with implement use |
| Total Combined Flow | 45–60 L/min | Allows for running multiple hydraulic functions |
| System Pressure | 180–210 bar (2,600–3,000 psi) | Standard for tractors in this power class |
| Remote Valves | 2–3 mechanical rear remotes | Standard quick-connect couplers |
Three-Point Hitch (3PH)
You will find the AGCO Allis 6670 tractor’s three-point hitch system helps you connect and control a wide variety of implements. The setup is made for ease of use, strong lifting capability, and precise control of rear-mounted tools.
| Feature | Details |
|---|---|
| Hitch Category | Category 2 |
| Lift Capacity | About 4,000 lbs (1,814 kg) at ball ends |
| Control Type | Draft and Position Control |
| Top-Link Sensing | No |
Hitch Category (1 / 1N / 2 / 3)
The AGCO Allis 6670 uses a Category 2 three-point hitch. Category 2 means the pins and arms fit implements designed for mid-size tractors.
Pin diameter is 1-1/8 inch for the lower arms and 7/8 inch for the top link. You can attach a range of tools such as plows, mowers, and tillers.
Most farm equipment for hay, tilling, and light tillage is compatible. This hitch size is larger than Category 1, giving you more options for heavier and wider implements.
It is not made for the smallest implements or for the largest commercial attachments, which need Category 3 or higher. You do not need adapters for most equipment that matches the Category 2 standard.
This helps you save time during attachment and detachment.
Lift Capacity @ Ball Ends
The tractor’s three-point hitch offers a lift capacity of about 4,000 pounds (1,814 kg) measured at the ball ends. This means you can use implements that require medium to heavy lifting, such as seed drills, chisel plows, and plows.
Lift capacity is strongest right at the hitch balls, so heavier equipment should be mounted as close as possible to the hitch for safest use. If you add long or heavy implements, be aware that real-world lifting power will decrease the farther out the load is.
The hydraulic system provides consistent lifting force for the three-point hitch. You can smoothly raise and lower implements even when carrying near the maximum weight.
If you work with heavier attachments, always check the recommended capacity to avoid damage to your tractor or equipment.
Draft / Position Control
You get both draft and position control with the AGCO Allis 6670’s three-point hitch. Position control lets you set the height of the implement and keep it at a fixed level—this matters for mowing, seeding, or spraying.
Draft control is helpful when pulling ground-working tools like plows or cultivators. It senses soil resistance and automatically raises or lowers the tool to keep pulling force steady.
This makes work easier and more efficient, especially in changing soil conditions. You can switch between draft and position modes by using the tractor’s control levers.
This flexibility means you have better adjustment and improved performance when using different implements. With both controls, you get more precise results in the field.
This also helps reduce operator fatigue.
Top-Link Sensing (Yes/No)
The AGCO Allis 6670 does not use top-link sensing on its three-point hitch system. Top-link sensing is found in some advanced tractors for more precise draft control.
It uses the top link to detect changes in implement load and adjusts the hitch position. Since the 6670 does not have this feature, draft control works using lower-link sensing or mechanical feedback.
The lack of top-link sensing does not stop you from using a wide range of implements. Basic draft control still helps you handle heavy tillage and soil tasks smoothly.
If you want to use top-link sensing, you would need to look at newer or larger tractor models with this option. For most general farming jobs, the standard setup works well and gives good results.
Axles & Load Limits
You need to know the important limits for both the front and rear axles to make sure the AGCO Allis 6670 works safely. The final-drive type also affects how power is sent to the wheels and the kinds of jobs you can do with this tractor.
| Feature | Value (2WD) | Value (4WD) | Notes |
|---|---|---|---|
| Max Front-Axle Load (Kg) | ~2,000 | ~2,200 | Estimates; actual ratings vary |
| Max Rear-Axle Load (Kg) | ~4,000 | ~4,700 | Based on max tractor weight |
| Max Capacity (Kg) | 4,399 | 4,900 | Complete tractor |
| Final Drive Type | Flange Axle | Flange Axle | Common for durability |
Maximum Front-Axle Load (Kg)
The AGCO Allis 6670’s front axle plays a big role in supporting the weight of heavy implements and attachments. On the 2WD version, the front-axle load is generally around 2,000 kg.
The 4WD model supports a higher load, closer to 2,200 kg. These figures are not official limits but are based on industry standards for tractors in this horsepower range.
If you are using a front loader or mounting heavy front implements, be careful not to exceed these limits. Too much weight on the front end can damage the axle or reduce steering control.
Always consider the total tractor weight and how it is distributed over both axles. Check your owner’s manual for exact numbers for your specific machine.
Maximum Rear-Axle Load (Kg)
The rear axle carries most of the weight when towing large equipment or carrying heavy 3-point hitch loads. For the 2WD AGCO Allis 6670, the rear axle supports about 4,000 kg.
The 4WD version can handle up to 4,700 kg, which is a direct result of its higher overall weight capacity. Exceeding the rear-axle load limit could cause premature axle wear, loss of traction, or even equipment failure.
When using ballast or pulling heavy implements, make sure total load remains within safe limits. This helps preserve driveline components and ensures safety in the field.
Always balance loads evenly and routinely inspect the axle assembly for any signs of stress or damage.
Final-Drive Type
The AGCO Allis 6670 uses a flange-type final drive axle. This design offers durability and strength, especially when working with demanding field implements or on rough terrain.
Flange-type rear axles are built for higher torque transfer to the wheels, which is important for a 69 hp tractor. This system requires regular maintenance, including checking the axle bolts, lubrication points, and the condition of flange seals.
For users operating in muddy or abrasive environments, flange axles provide extra protection against debris entering the axle housing. If you are planning to use axle-mounted dual wheels, the flange axle makes installation easier and adds extra strength compared to shaft or bar-type axles.
Tires & Track Options
The AGCO Allis 6670 tractor offers different tire types and sizes based on your specific field or utility needs. Several setups exist for both the front and rear, supporting various working conditions and improving traction, floatation, and stability.
Standard Front Tire Size (Ag / Turf / Industrial)
You can choose from several standard front tire sizes for the 6670, depending on the model and your work needs. Agricultural (Ag) tires are typically 7.50-16 for 2WD models and 12.4R24 for 4WD models.
These sizes help with traction in fieldwork and row cropping. Ag tires usually have deep lugs to grip soil well.
Turf tires, sometimes used for lighter grounds or golf courses, are not standard but may be available as an option. They have a different tread pattern, focusing on minimal ground disturbance.
Industrial tires might be available for utility or loader work, offering a tougher sidewall and more flat surface. Your choice of front tire affects how your tractor handles, especially when driving in wet or uneven fields.
The right size helps balance the tractor and spreads the load for stability.
Standard Rear Tire Size
The rear tires of the AGCO Allis 6670 are critical for power transfer. The standard size is listed as 16.9R30.
This large footprint supports weight distribution, provides grip, and keeps the tractor stable while pulling heavy equipment or working on slopes. If you use 2WD, these rears do most of the traction work.
In 4WD versions, they work alongside the front tires. The R30 designation means greater height, which can help with ground clearance and pulling power.
There may be options for different tread patterns, such as radial or bias, based on your field and task needs. Each pattern changes grip levels and ride smoothing.
Optional Duals / Tracks / Flotation Kits
You can fit dual wheels or flotation tires to boost traction and reduce soil compaction, especially in wet or loose soil. Dual rears add another tire alongside the standard, nearly doubling your tractor’s grip.
This helps when hauling or working in challenging field conditions. Flotation kits are available to increase surface area.
These are wider tires that spread out the tractor’s weight and help avoid deep ruts. Flotation options are useful for muddy or sandy soils.
The AGCO Allis 6670 does not come with factory track systems, but aftermarket solutions may be possible. Tracks can further increase floatation and stability, but are less common than duals on this model.
| Option | Size/Type | Purpose | Common Use Case |
|---|---|---|---|
| Front Ag Tire (2WD) | 7.50-16 | Traction, field work | Row crops, general farming |
| Front Ag Tire (4WD) | 12.4R24 | Improved grip, power distribution | Heavy tillage, loader work |
| Rear Ag Tire | 16.9R30 | Main drive tire, stability | Pulling, plowing, baling |
| Turf/Industrial | Varies, optional | Low impact or heavy-duty tasks | Lawns, loader, construction |
| Duals | Matched to standard | Traction, reduced compaction | Wet fields, heavy pulling |
| Flotation Kits | Wider than standard | Spreads load, prevents ruts | Mud, loose or soft ground |
| Tracks (Aftermarket) | Rubber, not standard | Maximum floatation, low ground pressure | Specialty, custom use |
Dimensions & Weight
The AGCO Allis 6670 tractor is a mid-sized utility tractor known for its practical size and solid build. Accurate dimensions and weight are essential to understand how this machine fits in different work environments, especially regarding storage, transport, and field compatibility.
| Specification | Measurement (2WD) | Measurement (4WD) | Notes |
|---|---|---|---|
| Wheelbase | 91.2 in (231 cm) | 94.4 in (239 cm) | 4WD slightly longer |
| Overall Length | 160 in (406 cm) | 160 in (406 cm) | Both versions |
| Overall Width (Min) | 78.8 in (200 cm) | 78.8 in (200 cm) | Minimum tread |
| Height to ROPS/Cab | 108 in (274 cm) | 108 in (274 cm) | To top of ROPS or Cab |
| Ground Clearance | ~17 in (estimate) | ~17 in (estimate) | Actual value may vary |
| Shipping Weight | 6,173 lbs (2800 kg) | 6,702 lbs (3040 kg) | Factory dry weight |
| Operating Weight | 6,700+ lbs (est.) | 7,300+ lbs (est.) | With fluids/fuel |
Wheelbase
You get a wheelbase of 91.2 inches (231 cm) on the 2WD model and 94.4 inches (239 cm) on the 4WD version. These measurements have a direct impact on your tractor’s stability during fieldwork and transport.
A longer wheelbase on the 4WD model gives you better handling on uneven terrain. It also provides a smoother ride when traveling across bumpy fields or roads.
For operations using heavy implements, this wheelbase helps maintain balance, reducing the risk of tipping in challenging conditions. A shorter wheelbase can provide a tighter turning radius, which can be helpful if you work in tight spaces like barns or small fields.
This makes the 2WD model more maneuverable in confined areas, but you get a slight trade-off in stability compared to the 4WD.
Overall Length
The overall length of the AGCO Allis 6670 is 160 inches (406 cm) for both 2WD and 4WD versions. This size enables you to move the tractor easily in most sheds, equipment garages, or on a typical trailer for transport.
Implement attachment is straightforward because you have enough room for linkages and connections at both the rear and front of the tractor. A length of 160 inches offers a balanced ratio when paired with standard implements.
This length also helps with forward visibility, making it easier to see over the hood and monitor working implements. When planning for storage or maneuvering in tight barns, always account for the full length of 160 inches to avoid space issues.
If transporting by truck or trailer, confirm total load length requirements. This reduces the risk of damage or loading difficulties and streamlines moving your tractor between job sites.
Overall Width (Minimum Tread)
The minimum tread or overall width for the AGCO Allis 6670 is 78.8 inches (200 cm). This measurement is critical for understanding the tractor’s fit through farm gates, narrow rows, or storage doors.
With a width just under 80 inches, you can pass through most standard farm entrances and navigate crop rows commonly found in row crop, orchard, or vineyard operations. The width also plays a role in tractor stability—wider stances generally mean a lower chance of rollover on slopes or uneven ground.
Minimum tread width gives you a starting point. However, you may be able to adjust the rear wheels further apart in some setups for added stability or to match crop row spacing.
Consult your owner’s manual for approved modifications before making any axle changes. Be sure to verify entry or barn clearance against this overall width before planning access.
Height To ROPS / Cab
The height to the top of the ROPS (Roll-Over Protective Structure) or cab on the AGCO Allis 6670 is 108 inches (274 cm). This is a key measurement for several reasons, including safe building clearance and storage planning.
Always check for height restrictions when entering sheds, barns, or garages, especially if you have overhead doors. The ROPS/cab is one of the tallest parts of the tractor and should be your reference point for clearance.
If your tractor is fitted with a cab, that typically increases the height slightly, but in most situations it matches the ROPS height. Low-hanging tree branches or barn beams can be obstacles.
It is good practice to maintain a clearance buffer of at least 4-6 inches above the measured height to reduce the risk of hitting overhead objects. Some ROPS can fold down for transport or storage, but always check your model’s features before planning moves through areas with low clearance.
For field work, the extra height provides visibility and protection.
Ground Clearance
Ground clearance on the AGCO Allis 6670 is estimated at about 17 inches. This value can vary slightly depending on tire size and wheel configuration.
Having a high ground clearance helps when working over rough terrain, crop stubble, or small obstacles in the field. Higher clearance minimizes the risk of dragging on uneven ground or getting caught up on rocks and debris.
For row-crop work, more clearance means less crop damage as you move between rows. Before purchasing or using attachments and implements, consider ground clearance to ensure nothing will scrape or drag.
If you commonly drive on fields with deep ruts or frequent bumps, this height is usually sufficient for most agricultural uses. Check tire inflation and size as these can affect actual clearance from one tractor to the next.
If you plan to use this tractor in muddy or irregular ground, the extra height can help reduce the risk of getting stuck.
Shipping Weight
The shipping weight of the AGCO Allis 6670 varies slightly by configuration:
- 2WD: 6,173 lbs (2,800 kg)
- 4WD: 6,702 lbs (3,040 kg)
Shipping weight includes the tractor itself as delivered from the factory, without added fluids, ballast, or attachments. This figure is important when arranging delivery, loading onto a trailer, or planning to move the tractor between locations.
Tractor dealers and transporters use this weight for safe loading limits and to choose the right trailers. Make sure your transport equipment can handle the shipping weight along with the weight of any accessories.
Do not confuse shipping weight with the operating weight. Once you add fluids, fuel, and attachments, the total weight will increase.
For planning insurance, licensing, or permits for road transport, always use the appropriate shipping weight figure.
Operating Weight (With Fluids)
Operating weight refers to the tractor with all standard fluids: fuel, hydraulic oil, engine oil, and coolant, plus the operator and standard equipment. For the AGCO Allis 6670, operating weight is typically at least 6,700 lbs for 2WD and over 7,300 lbs for 4WD, depending on specific equipment or optional tires.
This measurement helps determine actual soil compaction, field performance, towing ability, and overhead lift requirements. Extra features or attachments, such as front loaders, weights, or cabs, will also raise the total operating weight.
Knowing the loaded weight is important for safe operation on roads and bridges. When using the tractor for hauling or pulling implements, always base your calculations on operating (not shipping) weight, as this gives a more accurate measure for traction and braking.
Operating weight also affects ground pressure. On soft soils, higher weight can mean more compaction but also improved traction.
Adjust tire pressure and ballast according to the kind of fieldwork you plan to do.
Fuel & Fluids
You need to know how much your AGCO Allis 6670 can hold and what each system needs to run properly. The amount and type of fluid in each part of the tractor affect how it works and how often you need to check or maintain it.
| System | Capacity | Notes |
|---|---|---|
| Fuel Tank | 22.98 gallons (87 L) | Diesel, main source of engine power |
| DEF Tank | Not applicable | No DEF system on this model |
| Engine Oil Capacity | 8.5 quarts (8.0 L) | Regular oil checks needed |
| Hydraulic/Transmission Oil Tank | 13.7 gallons (51.9 L) | Shared system for hydraulics & trans. |
Fuel-Tank Capacity
The AGCO Allis 6670 comes with a fuel tank that holds 22.98 gallons (87 liters) of diesel fuel. This large capacity lets you work for long hours without stopping often to refuel.
It helps when you need to handle big jobs or operate in the field far from fuel sources. You should check the fuel gauge before starting each job.
Running the tank low can cause air to get into the fuel system and may lead to engine problems. Keeping the tank full also helps prevent condensation from forming, which can protect the fuel system from water contamination.
Diesel quality matters. It’s best to use clean, fresh diesel and store it properly if you keep extra fuel on your farm.
Dirty or old fuel can lead to filter clogging or even engine damage.
DEF-Tank Capacity (If Applicable)
The AGCO Allis 6670 does not use a Diesel Exhaust Fluid (DEF) system. This tractor was built before DEF became standard on newer machines with strict emission controls.
You do not have to add, check, or store DEF for this tractor. There are no sensors or warning lights for DEF level.
You only need to pay attention to regular diesel fuel.
Engine Oil Capacity
The engine oil capacity for the AGCO Allis 6670 is 8.5 quarts (8.0 liters). It is very important to keep the engine oil at the proper level.
Engine oil lubricates moving parts and helps keep the engine cool. Check the oil level with the dipstick before each use, especially during heavy work periods or long days.
Change the oil regularly and always use the brand and grade of oil listed in your owner’s manual. Using the wrong type of oil can harm your engine and may void any warranties.
Change the oil filter at the same time as the oil for best engine protection. Dirty oil or an old filter can cause extra wear inside the engine.
Hydraulic/Transmission Oil Capacity
Your AGCO Allis 6670 combines its hydraulic and transmission oil systems into one shared reservoir. The total capacity is 13.7 gallons (51.9 liters).
This oil runs both the hydraulic lift and the transmission gears. You should monitor it because both raising implements and driving the tractor depend on it.
Low oil can cause weak lifting power, noisy gears, or slipping that might damage the equipment. Always use the hydraulic/transmission fluid recommended by the manufacturer.
Cold weather or long work hours can affect oil pressure or cause leaks. Check for leaks under the tractor and inspect the oil level at routine intervals.
Electrical System
The AGCO Allis 6670 tractor comes with a straightforward 12-volt electrical system. You will find modern and easy-to-service charging and battery parts designed for reliability and durability in day-to-day use.
Ground Type (Negative / Positive)
The AGCO Allis 6670 uses a negative ground system. This means the negative terminal of the battery connects directly to the tractor frame.
Many modern tractors use this setup. Negative ground systems are common because they help reduce corrosion on electrical parts.
Wiring and component replacement is also easier when the system follows the negative ground standard. You should always check that the tractor’s wiring matches this configuration when you work on the battery or replace electrical parts.
If you connect items incorrectly, you risk shorting out circuits or damaging electrical devices. Using the correct ground helps keep your electrical system running smoothly.
Alternator / Charging System
This tractor uses an alternator charging system. The alternator is responsible for generating electricity while the engine runs and keeps the battery charged.
Alternators are more efficient than older generator systems because they provide consistent charging at lower engine speeds. In the AGCO Allis 6670, the alternator is built to supply enough current to support not only the engine’s needs but extra accessories like lights, blowers, or radios.
If you add electrical accessories, make sure not to overload the alternator. Proper alternator performance is vital to avoid problems like a dead battery or dim lights.
If you notice charging issues, check the alternator’s connections and ensure the belt is tight and not slipping.
Charging Output (Amps)
The tractor’s alternator supplies 55 amps of charging current. This output is enough for reliable starting, general tractor operation, and powering common accessories.
Your alternator’s amp rating directly affects how much electrical equipment you can use at one time. With 55 amps, you can run standard tractor lighting, instrumentation, and small powered implements without trouble.
If you need to add more lights or electrical attachments, make sure their total draw does not go over this 55-amp limit. Exceeding the alternator’s output can lead to insufficient battery charging and other electrical problems.
Always check the amp draw for any new accessory.
Battery Voltage
The AGCO Allis 6670 operates on a 12-volt battery system. This voltage has been standard for agricultural and automotive equipment for decades.
A 12-volt setup offers good starting power and is widely compatible with available batteries and electrical parts. Replacement batteries and related parts are easy to source and maintain.
Always confirm that replacement batteries match the 12-volt rating. Using a battery with the wrong voltage can damage electrical components or fail to start your tractor properly.
When charging or jump-starting your tractor, only use chargers and cables rated for 12 volts.
Battery CCA Rating
The recommended battery for the AGCO Allis 6670 should have a Cold Cranking Amps (CCA) rating of at least 900 CCA and be Group Size H8. CCA is important because it tells you how well the battery will perform in cold weather when engines are hardest to start.
A 900 CCA battery delivers strong cranking power even in below-freezing temperatures. This is especially valuable if you use your tractor year-round or park it outside.
Choosing a battery below the recommended CCA can result in hard starts or battery failure, especially in cold climates. Always select a battery with a rating that meets or exceeds the minimum suggestion.
| Feature | Specification | Details / Notes |
|---|---|---|
| Ground Type | Negative | Standard for modern tractors |
| Charging System | Alternator | Reliable at low and high engine speeds |
| Charging Output (Amps) | 55 A | Sufficient for lights, engine, and basic accessories |
| Battery Voltage | 12 V | Common and easy to find |
| Battery CCA | 900 CCA (Group H8) | Ensures powerful starts, especially in the cold |
Total Cost Of Ownership Metrics
When considering the AGCO Allis 6670 Tractor, it is important to review ongoing maintenance, estimated yearly expenses, equipment value changes, and fuel costs. These factors affect your long-term investment and daily operation costs.
| Metric | Details |
|---|---|
| Recommended Service Intervals | Engine oil: 250 hours, Hydraulics: 500 hours, Air filter: inspect every 100 hours |
| Annual Maintenance Cost | $1,000–$2,000 (routine service, minor repairs, parts) |
| Depreciation Curve (% Per Year) | 7–10% reduction in value annually for first 5 years |
| Fuel Consumption @ Rated Load (L Hr⁻¹) | ~8 to 11 liters per hour (based on workload and field conditions) |
Recommended Service Intervals
Routine maintenance for your AGCO Allis 6670 is necessary to keep it running smoothly and prevent major breakdowns. Engine oil and filter changes are recommended every 250 hours.
Hydraulic fluid should be changed every 500 hours to avoid system wear. You should inspect the air filter every 100 hours, more often in dusty conditions.
Grease all fittings every 50 hours to reduce friction and prevent part wear. Check tire pressure and inspect hoses and belts at least once a month.
Most of these services can be managed with basic mechanical skills and tools.
Estimated Annual Maintenance Cost
Annual upkeep for an AGCO Allis 6670 tractor is usually between $1,000 and $2,000, depending on use, climate, and how often it operates. This includes parts, labor (if you hire out repairs), fluids, and wear items like filters, belts, and hoses.
Repairs beyond routine service raise costs, especially for larger replacements like hydraulic pumps or clutch assemblies. If you do your own maintenance, your costs will be closer to the lower end of the range.
Regular checks and keeping a maintenance record can help you stay ahead of major problems. Unexpected breakdowns or urgent repairs are harder to predict and can cost extra.
Depreciation Curve (% Per Year)
You can expect your AGCO Allis 6670 tractor to lose about 7–10% of its value each year during the first five years. Tractors tend to hold value well if properly maintained, but they lose the most value within the first few years as they move off the dealer lot and build hours.
After the initial period, the rate of depreciation levels out, with older units typically losing 4–6% per year. A well-serviced tractor may sell above average market value, especially if you keep detailed maintenance records.
Age, total hours, visible condition, and major component replacements all impact the final resale value.
Fuel Consumption @ Rated Load (L Hr⁻¹)
The fuel efficiency of the AGCO Allis 6670 under rated load is about 8 to 11 liters of diesel per hour. Your actual fuel use depends on the type of field work, implement used, and how hard the tractor is working.
Light work such as mower operation uses less fuel. Heavy tillage or loader work increases consumption.
Clean air filters, correct tire pressure, and regular engine tuning help keep fuel use within this range. Tracking usage per hour lets you manage expenses and plan ahead for refueling during busy seasons.