AGCO Allis 4660 Tractor 58 hp Specifications, Features, and Performance Overview
AGCO Allis 4660 Tractor 58 Hp
The AGCO Allis 4660 is a reliable tractor that stands out for its solid 58 horsepower engine and practical design. This tractor is valued for its durability, power, and versatility for various farm needs.
Production & Identification
You can identify the AGCO Allis 4660 by its production years, engine features, and series information. This model was made between 1991 and 1997 and came from Italian manufacturing.
It has a 58 hp engine and is part of the 4600 Series, making it suitable for small and medium farm operations. The engine in this tractor is air-cooled, helping you avoid overheating during long work hours.
Most units have a 12-speed synchro mesh transmission. It’s known for being dependable with a proven record for hay and loader work.
Some 4660s have a non-working tachometer recorded in listing descriptions, so you may want to check this if you are buying used. The tractor usually comes with ROPS (Roll-Over Protective Structure) and can have a loader attached.
Below is a table summarizing key identification features:
| Feature | Details |
|---|---|
| Production Years | 1991-1997 |
| Engine Power | 58 hp |
| Manufacturer | Italian origin |
| Series | 4600 Series |
| Transmission | 12-speed Synchro Mesh |
| PTO Power | About 52 hp |
| Common Attachments | Loader, 3-point hitch |
| ROPS | Standard |
| Cooling System | Air-cooled |
Manufacturer / Brand
The AGCO Allis 4660 was produced by AGCO, a well-known farm equipment manufacturer. AGCO stands for “Allis-Gleaner Corporation.”
The company formed in 1990 after buying various brands, including Allis Chalmers. The 4660 model was actually built in Italy by SAME, a respected European tractor maker.
AGCO imported these tractors and branded them as AGCO Allis in North America. Allis Chalmers is an important part of the AGCO story.
Before AGCO, Allis Chalmers made farm tractors and equipment in the United States for many decades. When AGCO was created, it continued the legacy by keeping the Allis name in its tractor models.
You can often find the 4660 model related to the SAME Solar 60, since they are almost the same. SAME produced the original design, and AGCO provided the branding, parts support, and dealer network in the U.S.
Here’s a table showing key details about the manufacturer and branding for the AGCO Allis 4660:
| Feature | Details |
|---|---|
| Manufacturer | SAME (Italy) |
| Brand | AGCO Allis |
| Related Brand History | Allis Chalmers (USA) |
| Parent Company | AGCO |
| Production Years | 1991 – 1997 |
| Similar Model | SAME Solar 60 |
| Market Region | North America (AGCO Allis) |
| Branding Approach | European build, U.S. brand and support |
AGCO managed parts, service, and sales through its network. The combination of European engineering and American branding gave you a reliable, easy-to-find tractor in the U.S. market.
Model Number / Series
The AGCO Allis 4660 is part of the 4600 Series utility tractors. You will notice this model is sometimes called simply “4660,” but you may also see it listed under its series name.
This tractor was built by SAME in Italy for AGCO Allis. It was made during the early to mid-1990s.
You can find other tractors in the 4600 Series, such as the 4650, 5650, 5660, 5670, and 5680. Each model offers different horsepower and features, but all fall under the same general series.
The model number “4660” helps you to identify the specific tractor’s size, engine type, and production run within the series. This number is important when you are buying parts or looking up manuals.
Below is a table with key details about the model and series:
| Model | Series | Horsepower | Years Produced | Manufacturer |
|---|---|---|---|---|
| 4660 | 4600 Series | 58 hp | 1991 – 1997 | SAME (Italy) |
| 4650 | 4600 Series | 52 hp | 1991 – 1997 | SAME (Italy) |
| 5650 | 5600 Series | 53 hp | 1994 – 1999 | SAME (Italy) |
| 5660 | 5600 Series | 63 hp | 1994 – 1999 | SAME (Italy) |
| 5670 | 5600 Series | 69 hp | 1991 – 1999 | SAME (Italy) |
| 5680 | 5600 Series | 80 hp | 1991 – 1997 | SAME (Italy) |
When you need to identify or compare the 4660, use the table above to check series and key specs. Always match the model number with the correct series to avoid confusion, as AGCO Allis used similar numbers across different series.
The 4660’s position in the 4600 Series means it shares design elements with other models in the same group, but its performance level is unique to its model number.
Factory of Manufacture
The AGCO Allis 4660 tractor was made in Italy. The manufacturer for this model is SAME, an Italian company with a long history in tractor production.
Your 4660 was assembled in one of SAME’s Italian facilities. SAME is known for using efficient manufacturing methods and modern equipment.
The factory focused on quality control at every stage. Workers checked engine assembly, transmission setup, and electrical systems before shipping.
AGCO Allis, a brand owned by AGCO, worked with SAME to produce this model for the North American market. Because of this arrangement, you get European-made engineering with support from a global company.
Production years for the 4660 were 1991 through 1997. During these years, the SAME factory built several models for AGCO Allis.
Key Points about the Factory:
- Location: Italy
- Manufacturer: SAME
- Type of Facility: Tractor assembly and testing
- Role of AGCO Allis: Distributor and brand partner
| Detail | Description |
|---|---|
| Factory Location | Italy |
| Manufacturer | SAME |
| Distributor | AGCO Allis (part of AGCO) |
| Production Years | 1991 – 1997 |
| Assembly Focus | Utility tractor models |
| Quality Control | Multiple checks before shipment |
| Market Served | North America (mainly USA and Canada) |
Years Produced
The AGCO Allis 4660 tractor was produced from 1991 to 1997. During these years, you could find the 4660 available through AGCO Allis dealers.
This time frame covers the entire production run for this model. Production started in 1991, following AGCO’s strategy to offer reliable utility tractors for mid-size farms.
Manufacturing was handled by SAME in Italy, then distributed under the AGCO Allis brand. By the end of 1997, production of the 4660 was stopped.
AGCO Allis then shifted focus to newer models and technologies as farming needs changed.
Here’s a table showing the key details about the years produced:
| Model | Years Produced | Manufacturer | Country Built | Engine Power |
|---|---|---|---|---|
| AGCO Allis 4660 | 1991–1997 | SAME | Italy | 58 hp |
If you are looking for used models, you will most commonly see production years listed from 1991 through 1997. No new AGCO Allis 4660 tractors were made after 1997.
This six-year production span helps define the parts availability and resale value of these tractors today. Your access to original equipment will depend on parts produced during this era.
Original List Price (Launch Year)
The AGCO Allis 4660 tractor was first offered for sale in the late 1990s. The original list price when it launched in 1997 was $22,500.
You could expect to pay this amount for a new 4660 with standard features and no optional attachments. This price put the 4660 in the middle range for utility tractors of its time.
Farmers and property owners considered factors like horsepower, reliability, and the included features when looking at the cost. The AGCO Allis 4660 provided 58 horsepower, appealing to those who needed a moderate power tractor.
Original pricing did not always include add-ons like loaders or special tires. These could increase your total expense depending on your needs.
Price Table for AGCO Allis 4660 at Launch (1997)
| Model | Launch Year | List Price (USD) | Horsepower (hp) | Country of Origin |
|---|---|---|---|---|
| AGCO Allis 4660 | 1997 | $22,500 | 58 | Italy |
Optional equipment and financing options could also affect your final cost. Always check with a dealer for possible taxes and delivery fees that may apply to your area.
In today’s market, the value of used AGCO Allis 4660 tractors can depend on condition, usage hours, and included attachments. For historical context, the original list price gives you a starting point to compare costs over time.
Serial-Number Location
You can find the serial number for the AGCO Allis 4660 tractor on the console, on the right side of the operator’s area. Look for a plate or sticker in this spot.
The serial number is usually engraved or printed, making it easy to read. Make sure the number is not covered by dust or debris.
If you are having trouble finding it, check along the side of the console where controls are located. Sometimes, paint or wear can make it hard to spot.
Cleaning the area can help reveal the serial plate. The serial number is important for identifying the exact model year.
It also helps when ordering parts or service. You should write down or take a photo of the serial number for your records.
This will make it easier to share the information with dealers or service centers if needed. The table below shows the details for locating the AGCO Allis 4660 serial number:
| Location | Description | Tips for Finding | Importance |
|---|---|---|---|
| Console, right side | Plate or sticker near controls | Clean the area, inspect for stickers or plates, use a flashlight if it’s dark | Needed for parts, repairs, and verifying model year |
Always double-check that the serial number you find matches the paperwork for your tractor to avoid any mix-up.
Engine Specifications
The AGCO Allis 4660 tractor uses a 3-cylinder diesel engine known for its reliable direct injection fuel system and air-cooled design. This section provides the key technical details about power, capacity, emissions, and core physical specifications.
Engine Make & Model
The AGCO Allis 4660 is equipped with an SLH (Same Lamborghini-Hurlimann) engine. This 3.1-liter model is specifically designed for durability and consistent performance.
The SLH brand is well-respected in the agricultural industry for its robust engineering and efficient output.
You benefit from a straightforward and proven engine design that prioritizes low maintenance and a long service life.
Key facts:
- Engine Manufacturer: SLH (Same Lamborghini-Hurlimann)
- Engine Model: 3.1L, 3-cylinder, air-cooled diesel
- Design: Focused on simplicity and field serviceability.
Fuel Type & Emissions Tier
The 4660 runs on standard diesel fuel using a direct injection system. This direct injection approach improves fuel efficiency and allows more precise fuel delivery to the cylinders.
The injection pump sends diesel into the high-compression chamber, resulting in better combustion and less fuel waste.
There’s no advanced emission system or particulate filter included, so emissions standards reflect regulations from the early 1990s, before Tier standards.
- Fuel: Diesel
- Injection System: Direct injection with mechanical injection pump
- Emissions Tier: Pre-dates EPA Tier emission standards (not Tier-rated)
Cylinders / Displacement
You get a 3-cylinder inline engine. Each cylinder is responsible for a part of the machine’s balance and power output.
The total engine displacement is 3.1 liters, which equals about 190 cubic inches. This engine size is matched well for a tractor rated at about 58 hp.
With a 3-cylinder design, the engine uses fewer moving parts compared to 4-cylinder engines. This can reduce maintenance needs.
- Cylinder Count: 3 (inline)
- Displacement: 3.1 L (190 cubic inches)
- Layout: Inline configuration
- Valvetrain: Pushrod-operated overhead valves
Rated Horsepower (Gross & Net)
The gross engine horsepower is rated at 58.7 hp (43.8 kW) at 2200 RPM. This is the maximum output before losses from accessories or drivetrain are accounted for.
PTO (Power Take-Off) horsepower, often referred to as net power, is slightly lower at about 52.2 hp (38.9 kW) as measured in field conditions. Drawbar power (used for pulling) is tested and typically measures 44.48 hp (33.2 kW).
- Gross Horsepower: 58.7 hp (43.8 kW)
- Rated RPM: 2200
- PTO Horsepower (net): 52.2 hp (38.9 kW)
- Drawbar (tested): 44.48 hp (33.2 kW)
Peak Torque (Nm @ Rpm)
Peak torque is essential for heavy work at lower speeds. While exact numbers for peak torque in Newton meters (Nm) at specific RPMs are not always listed for this model, it is typical for a 3.1L diesel of this power rating to produce around 200-220 Nm of torque.
This torque is generally achieved at a lower RPM, likely between 1200 and 1500 RPM. This provides strong pulling ability for tasks like tilling and hauling.
- Estimated Peak Torque: ~200-220 Nm
- Peak Torque RPM: ~1200-1500 RPM
- Usable Power Band: Wide, favoring agricultural workloads
Compression Ratio
The engine uses a compression ratio of 17:1. Diesel engines require higher compression to ignite the fuel without spark plugs.
A 17:1 ratio provides efficient combustion, especially important for direct injection engines. This also helps with cold starting and produces greater torque at lower RPMs.
- Compression Ratio: 17:1
- Benefit: Helps ensure complete fuel burn and strong performance
- Cold Start Performance: Strong due to high compression
Cooling System & Capacity
The AGCO Allis 4660 features an air-cooled engine. Unlike water-cooled engines, this model uses fins and airflow to regulate temperature, eliminating the risk of coolant leaks and freeze-ups.
Air-cooled systems are simple and require less routine maintenance. There is no liquid coolant, radiator, or water pump to service.
The entire engine cooling depends on air flow from the built-in fan and careful positioning of fins.
- Cooling Method: Air-cooled
- Fan: Engine-driven for airflow across fins
- No liquid coolant; no radiator required
Engine Specifications Table
| Feature | Detail |
|---|---|
| Engine Make & Model | SLH, 3.1L, 3-cylinder, air-cooled diesel |
| Fuel Type | Diesel, direct injection, mechanical injection pump |
| Emissions Tier | Not certified; pre-dates EPA Tier standards |
| Cylinder/Displacement | 3 cylinders inline; 3.1 L (190 ci) |
| Valvetrain | Pushrod-operated overhead valves |
| Rated HP (Gross/Net) | 58.7 hp @ 2200 RPM (Gross), 52.2 hp (PTO) |
| Drawbar HP | 44.48 hp (tested) |
| Peak Torque | ~200-220 Nm @ 1200-1500 RPM (estimate) |
| Compression Ratio | 17:1 |
| Cooling System | Air-cooled; engine-driven fan |
Power Take-Off (PTO)
The PTO on the AGCO Allis 4660 is designed to manage a wide range of implements easily. Its power rating, type, and speed options let you run equipment reliably for jobs like mowing, baling, and tilling.
Claimed PTO Horsepower
The AGCO Allis 4660 tractor has a claimed PTO horsepower rating of 52 hp (about 38.8 kW). This is the amount of power sent from the engine directly to your PTO-driven equipment.
While the engine offers about 58.7 hp, the PTO delivers less due to normal power loss in the drivetrain. You can expect enough power from the PTO to handle medium to large implements like rotary mowers, balers, or spreaders.
A solid PTO horsepower rating is important if you plan to use multiple implements throughout the season. This level of PTO output also matches well with many hydraulic and heavy-duty PTO-driven tools.
Ensuring your chosen equipment stays within the 52 hp PTO limit helps you avoid performance issues and possible equipment damage.
PTO Type (Independent / Live / Economy)
This tractor features an independent rear PTO. You control it through its own lever or switch, which means you can turn the PTO on or off no matter what the tractor’s clutch or transmission is doing.
Independent PTO designs allow for smoother operation, especially when working with PTO-driven machines that must start or stop without stopping the tractor. The clutch used is a dry disc type, known for reliable engagement and reduced maintenance.
You can engage or disengage the PTO at any time. This setup is more flexible than older live or transmission-driven PTO systems.
Choosing a tractor with an independent PTO is useful when you need to make quick adjustments or operate attachments that require frequent stops and starts. This feature is common in tractors built for a wide range of modern farming tasks.
PTO Speeds (540 / 1 000 Rpm)
The AGCO Allis 4660 is equipped with a 540 rpm rear PTO. This is the standard PTO speed for many implements like mowers, tillers, and balers.
The 540 rpm setting allows you to connect and use a broad selection of attachments found on most farms. There is no mention of an available 1,000 rpm PTO option for this tractor.
Most users will rely on the 540 rpm output for everyday applications. Using the correct PTO speed is important because powered implements are designed for a specific rpm range.
Ensuring you match implement requirements with the available PTO speed prevents damage and improves efficiency. When connecting your implement, always double-check that it is compatible with the 540 rpm PTO to avoid problems.
| PTO Feature | Specification | Details |
|---|---|---|
| Claimed PTO HP | 52 hp (38.8 kW) | Power delivered to PTO-driven equipment |
| PTO Type | Independent | Operated separately from clutch/transmission |
| PTO Clutch | Dry disc | Engages/disengages smoothly |
| PTO Speed(s) | 540 rpm | Standard for most farming implements |
| Rear PTO Configuration | Yes | Standard on the AGCO Allis 4660 |
| 1,000 rpm Option | Not available | Only 540 rpm is supported |
Transmission & Drivetrain
The AGCO Allis 4660 comes equipped with a synchromesh transmission, a solid gear range, and both 2WD and 4WD options. It is designed for versatility and practical field or transport operations.
Features like the dry disc clutch, differential lock, and drive modes help you handle demanding tasks. This makes it a reliable option for agriculture work.
| Feature | Details |
|---|---|
| Transmission Type | Synchromesh |
| Number of Gears | 12 Forward, 3 Reverse (or 16-speed optional) |
| Clutch | 250mm Dry Disc |
| Top Transport Speed | Varies (typically up to 30 km/h or 18 mph) |
| Drive Options | 2WD, 4WD (MFWD) |
| Differential Lock | Yes, Manual |
| Final Drives | Inboard Planetary (typical for the series) |
Transmission Type (Syncro, Powershift, CVT, HST)
You get a synchromesh transmission with the AGCO Allis 4660. This means you can shift between gears on the move for both forward and reverse ranges.
The syncro system makes it easier to change gears smoothly without stopping. This is helpful during field work or when moving between jobs.
A dry disc clutch is used, sized at 250mm. This system is known for being reliable and simple to maintain.
There is no powershift or hydrostatic alternative available on this model, so you depend on manual gear selection. The synchromesh system provides more direct control over speed and torque compared to CVT or HST systems.
Number of Gears / Ranges
You have a total of 12 forward gears and 3 reverse gears in the standard configuration. This is arranged in several gear ranges, so you can pick the right speed for your task.
Some versions of the 4660 may also have a 16-speed creeper gear option. The extra gears are helpful for low-speed operations, such as planting or tilling.
This wide range gives you flexibility in selecting working speeds for different jobs. Having 12 or more gears lets you find a setting that matches your engine load and field conditions.
Reverse gears work in the same way and offer good control for backing up in tight spaces.
Top Transport Speed
The AGCO Allis 4660 can reach a top transport speed of around 30 km/h (about 18 mph), depending on tire size and conditions. This speed allows you to move the tractor between fields or along roads efficiently.
While it is not as fast as some modern tractors, it is suitable for most farm tasks and transport needs. A balance between safe operation and reasonable road speed is maintained, so you do not sacrifice control.
The speed will drop if you use the creeper range or work on steep or rough surfaces. The gearing and transmission structure ensure you can safely transport loads or implements without over-revving the engine.
Drive (2WD / 4WD / AWD)
You can choose between 2WD (rear-wheel drive) and 4WD (MFWD, mechanical front-wheel drive) with the AGCO Allis 4660. The 4WD option offers better traction and performance on uneven or wet ground.
It is especially beneficial for heavy pulling, loader work, or dealing with slippery conditions. Switching between drive modes gives you flexibility depending on your field or transport situation.
The 2WD version is lighter and has a tighter turning radius, making it easier to handle for light work or on paved areas. Both drive types use a similar chassis and transmission, so reliability is consistent.
Differential-Lock & Final Drives
A manual differential lock system is included. This lets you lock the rear axles together for maximum traction in mud or soft soil.
Engaging the diff-lock is done with a pedal or lever, depending on the specific year and build. This feature prevents wheel slip when one wheel loses grip.
Final drives are usually inboard planetary gear types for this series, which distribute power evenly to the wheels. This setup is more durable and reduces stress on axles during heavy fieldwork.
The combination of differential lock and robust final drives allows you to work with heavier implements and maintain control in tough field conditions.
Steering & Brakes
The AGCO Allis 4660 tractor uses a combination of power-assisted systems and dependable wet disc brakes to manage steering and braking. The layout is designed to help you keep control and stop safely in a variety of farm situations.
Steering System (Hydrostatic / Power-Assisted / Mechanical)
The AGCO Allis 4660 is equipped with power steering, also known as hydrostatic steering. This system uses hydraulic pressure instead of manual force to turn the wheels.
You can expect lighter steering effort, especially when operating at low speeds or while carrying heavy implements. Hydrostatic steering helps you reduce fatigue during long work hours.
The response is quick, allowing for precise movements. The steering wheel is connected to a hydraulic control valve, and turning the wheel directs hydraulic fluid to a steering cylinder.
This system holds up well in rough terrain or when the tractor is carrying a front-end loader. With power steering, you do not need extra strength to steer under load.
Turning Radius (With Brakes)
The turning radius of the AGCO Allis 4660 allows you to maneuver tight corners in small fields or around obstacles. With the assistance of the brakes, you can make even sharper turns.
The brakes act independently on the rear wheels, letting you pivot the tractor more easily. When you use the brake on one side, it allows the opposite wheel to turn sharply, tightening the turning circle.
This feature is helpful for headland turns or working in confined areas like barns and feedlots. You do not have to make wide passes, saving you time and effort when planting or cultivating.
The combination of hydraulic steering and brake-assisted turning helps you keep control even on uneven ground.
Service Brakes (Wet Disc, Dry Drum, etc.)
AGCO Allis 4660 tractors are fitted with mechanical wet disc brakes. These brakes use multiple discs that run bathed in oil inside a sealed housing on the rear axle.
Wet disc brakes are known for their durability, smooth engagement, and long service life, even under heavy use. Because the discs stay lubricated, there is less heat buildup and reduced wear compared to dry drum brakes.
You get solid and consistent stopping power whether you are transporting loads or operating heavy implements. The brakes are foot-operated and split for individual left and right use.
This not only provides standard stopping ability but helps with steerage and maneuverability.
Parking Brake Type
The parking brake on the AGCO Allis 4660 is a mechanical lever-actuated system. When you engage the parking brake lever, it locks the brake mechanism in place to prevent the tractor from rolling.
This setup is easy to use and reliable, which is vital when you are on sloped ground or leaving the tractor unattended. The lever usually sits to the right of the seat and can be quickly engaged or released.
The direct mechanism gives you a secure hold, as it does not rely on hydraulics or electronics. You should always set the parking brake when leaving the operator’s seat.
| Feature | Specification/Type | Notes |
|---|---|---|
| Steering System | Power-assisted (hydrostatic) | Light effort, hydraulic response, easy maneuvering |
| Turning Radius (With Brakes) | Tight (brake-assisted turning) | Separate brakes tighten turning circle |
| Service Brakes | Mechanical wet disc brakes | Durable, oil-cooled, consistent stopping power |
| Parking Brake Type | Mechanical lever-actuated | Simple lever, secure hold, prevents rolling |
Cab & Operator Station
The AGCO Allis 4660 tractor is designed with the comfort and safety of the operator in mind. It features practical solutions for protection, seating, and environmental control to support long hours in the field.
| Feature | Details |
|---|---|
| ROPS/Cab Option | Standard ROPS; enclosed cab optional on some models |
| Climate Control | Heater and simple ventilation standard; air conditioning not always included |
| Seat & Suspension | Adjustable mechanical suspension seat; ergonomic controls |
| Noise Level | Typically around 80-85 dB(A) at operator’s ear |
ROPS / Cab Option
You get a Rollover Protective Structure (ROPS) as standard equipment with the AGCO Allis 4660. This steel frame is installed behind your seat and helps protect you if the tractor rolls over.
Some models offer an enclosed cab option, which keeps you out of dust and bad weather. The cab is built with safety glass and sturdy doors that seal well.
If you choose the open station, you still have side steps and handholds to help you get on and off the tractor safely. The placement and height of the ROPS are made for good visibility and headroom.
Climate Control (A/C, Heater, Filter)
In the AGCO Allis 4660’s cab version, a factory-installed heater keeps you warm during winter or chilly mornings. Fresh air filters are standard, reducing the amount of dust and pollen that reaches you inside.
Air conditioning is not always installed on every model, so check before you buy if you need it for hot climates. You can depend on windows and vents to give some airflow when air conditioning isn’t available.
If you work in dusty conditions, the filter does a good job keeping the air cleaner. Controls for the heater and vents are close to the seat and easy to adjust.
Seat & Suspension
The seat is a padded, adjustable mechanical-suspension type. It absorbs bumps and vibrations when you drive over uneven ground.
You can adjust the seat’s backrest, height, and slide position to fit your size and comfort. Armrests are available on some seats, giving more support for longer hours.
The steering wheel tilts, which lets you find a position that is comfortable for your arms and shoulders. Controls for the PTO, hydraulics, and gears are placed close to your right hand.
This makes it easy to work without stretching or twisting around.
Noise Level (dB A @ Operator Ear)
Noise levels in the AGCO Allis 4660 operator area are typically between 80 and 85 decibels (dB A) at the operator’s ear during full load. If you use the cab version, sound insulation panels help reduce the engine and outside noise.
Extended use above 85 dB can be tiring, so wearing hearing protection is suggested if you spend long hours in the seat. The engine’s tone is steady, with little change at normal operating speeds.
Hydraulics
The AGCO Allis 4660 uses an open-center hydraulic system designed for reliability. It offers specific flow rates and pressure, making it capable of handling common farm implements and loader work.
System Type (Open-Center / Closed-Center / PFC)
The hydraulic system of the AGCO Allis 4660 is open-center. This means that hydraulic fluid flows continuously through the system unless diverted by a control valve.
Open-center systems are known for their straightforward design, making them easy to maintain. When you are using the hydraulics, oil is sent to the part you need only as long as the lever is held.
This system is common in utility tractors and fits basic loader and implement needs. You do not have pressure on demand like with a closed-center or pressure-flow compensated (PFC) system.
Instead, the open-center system offers consistent, predictable performance for the tasks you do most.
Implement Pump Flow (L min⁻¹)
The implement (main) pump on the 4660 is tasked with generating flow for all external hydraulic needs such as lifting implements or running hydraulic cylinders. The pump flow rate is about 39.4 liters per minute (L/min), equal to roughly 10.4 gallons per minute (gpm).
This amount of flow supports a range of small to medium hydraulic attachments. If you plan to use larger implements or tools that require very high flows, this is an important number to consider.
For most standard farm tasks, this flow is sufficient.
Steering Pump Flow (If Separate)
In some tractors, the steering circuit has its own dedicated pump for safety and smoother handling. On the AGCO Allis 4660, however, the steering and main implement circuits both use the same open-center system.
This means the hydraulic pump supplies oil for both implement operation and power steering. There is no separate steering pump or circuit.
When steering and implement hydraulics are used at the same time, they share the available flow from the main pump. For general operation and typical loader work, you may notice little impact.
However, heavy use of both functions at once may slightly reduce steering or implement speed.
Total Combined Flow
Because the AGCO Allis 4660 has a single open-center hydraulic pump servicing both steering and implements, the total combined flow available is 39.4 L/min (10.4 gpm). This combined flow sets the upper limit for all hydraulic activities happening at the same time.
If you are using the loader and steering together, the total flow gets split between the functions. You should consider combined flow when planning to operate multiple hydraulic functions at once.
For example, running a loader and steering during tight maneuvers could slightly reduce response speed compared to using them individually.
System Pressure (Bar / Psi)
The rated system pressure for the AGCO Allis 4660 hydraulics is about 2,250 psi (155 bar). System pressure indicates the maximum force the hydraulic system can provide for lifting, pushing, or other powered movement.
Pressure is important for tasks requiring high lifting or breakout forces, such as loader or implement work. The 4660’s system pressure level is in line with similar tractors and supports most farm tasks.
Always keep system pressure in mind when matching the tractor with high-demand implements. Using equipment that requires more pressure than the system can supply may result in slower operation or reduced lifting capacity.
Remote Valves (Number & Type)
The AGCO Allis 4660 is typically equipped with two rear remote valves as standard, but some models may come with up to three. These valves are controlled via levers and allow you to connect hydraulic hoses from implements such as a loader, mower, or log splitter.
Most remotes are double-acting, delivering oil to both sides of a cylinder so it can extend and retract under power. The availability of extra remotes gives you flexibility to operate multiple hydraulic tools at the same time.
| Feature | Specification/Description |
|---|---|
| System Type | Open-center |
| Implement Pump Flow | 39.4 L/min (10.4 gpm) |
| Steering Pump Flow | Shared with implement hydraulics—no separate steering pump |
| Total Combined Flow | 39.4 L/min (10.4 gpm) |
| System Pressure | 2,250 psi (155 bar) |
| Remote Valves | 2 standard (up to 3 on some models), double-acting |
Three-Point Hitch (3PH)
The AGCO Allis 4660 comes equipped with a rear three-point hitch designed for a wide range of implements. You get strong lifting power, reliable control, and a hitch setup that fits common modern implements.
| Feature | Specification | Details |
|---|---|---|
| Hitch Category | Category II | Suited for medium-duty to heavy implements |
| Lift Capacity | 4,355 lbs (1,975 kg) @ ends | Handles large plows, disc harrows, and mowers |
| Draft/Position Ctrl | Both available | Enhances precision with various field tasks |
| Top-Link Sensing | No | Uses lower-link for draft detection |
Hitch Category (1 / 1N / 2 / 3)
The AGCO Allis 4660 uses a Category II three-point hitch. This category is commonly found on utility and mid-sized tractors.
You can attach medium- to heavy-duty implements like large rotary cutters, heavy cultivators, and sizable tillers. Category II pins are 1 inch in diameter, and the lower link arm spacing is 32 inches.
Equipment designed for this category is easy to find and allows you flexibility in your work. Always check pin size and spacing to ensure compatibility before attaching equipment.
You cannot use Category III implements without special adaptors; stick with Category II for best fit and performance. If you want to use lighter implements from Category I, some adaptors are available, but check the weight and power requirements.
Lift Capacity @ Ball Ends
The three-point hitch on the AGCO Allis 4660 lifts up to 4,355 pounds (1,975 kg) at the ball ends. This high lift capacity gives you the power to use heavy equipment without difficulty.
You can raise plows, large finish mowers, or even heavier seeders and planters. Always check the implement’s maximum weight to avoid overloading, which can damage the hitch or tractor.
Safe lifting means checking that the weight is balanced and within the rated capacity.
Draft / Position Control
The tractor is equipped with both position control and draft control features on the three-point hitch. Position control lets you set and hold the height of the implement, keeping your equipment at a steady level above the ground.
Draft control automatically adjusts hitch height based on soil resistance. This function is especially useful when plowing or using ground-engaging tools.
It helps maintain a consistent working depth by sensing any change in load and adjusting the lift accordingly. Combining these controls improves operating accuracy in various field jobs.
You get smooth operation for jobs like mowing, tilling, or transporting implements over rough ground.
Top-Link Sensing (Yes/No)
There is no top-link sensing on the AGCO Allis 4660; the system uses lower-link draft sensing. This is standard for tractors in this class and still offers reliable draft control.
Lower-link sensing means the hitch senses pull from the lower arms rather than the top link. This setup works for most fieldwork applications, ensuring predictable draft response on tillage equipment.
Without top-link sensing, you may notice slightly less sensitive control in some demanding conditions, but performance for daily tasks remains steady.
Axles & Load Limits
Understanding the axles and load limits of the AGCO Allis 4660 tractor helps you ensure safe operation and avoid equipment damage. These limits show how much weight the axles can support during normal use.
Maximum Front-Axle Load (Kg)
The AGCO Allis 4660 is built for utility work, and the front axle must support the weight of attachments like loaders and the front end of the tractor. You need to avoid exceeding the front-axle load limit to prevent steering issues and potential axle damage.
Factory specifications do not list an exact maximum front-axle load for the 4660. However, similar utility tractors in this class usually have a front-axle limit around 1,500 kg (3,300 lbs).
If you install a front loader, make sure you check the front-axle load especially when carrying heavy loads or using front weights. You can find the actual maximum load stamped or labeled on the tractor’s axle housing.
It’s important to always consider the combined weight of attachments and any carried material.
| Feature | AGCO Allis 4660 |
|---|---|
| Front-Axle Limit (kg) | About 1,500 kg (estimate) |
| Loader Compatible | Yes, with attention to load |
| Weight Label Location | On axle housing |
Maximum Rear-Axle Load (Kg)
The rear axle carries much of the tractor’s weight, especially when pulling implements or carrying rear-mounted equipment. Exceeding these limits can lead to premature wear, axle damage, or unsafe operation.
Typical rear-axle maximum load for a tractor in this horsepower range is around 2,500 kg (5,500 lbs). This includes the weight of the tractor’s rear end, any ballast, and the mounted equipment.
Always include the operator’s weight, fuel, and any carried materials when you calculate axle loads. Use the rear hydraulics for controlling heavy implements, but avoid going over the recommended limits when attaching large machinery or carrying heavy loads on a hitch.
| Feature | AGCO Allis 4660 |
|---|---|
| Rear-Axle Limit (kg) | About 2,500 kg (estimate) |
| Rear Attachments | 3-point hitch, implements |
| Rear Ballast Possible | Yes |
Final-Drive Type
The AGCO Allis 4660 tractor uses a durable final drive system to transfer engine power to the wheels. Most models in this series have either a planetary or bull gear final-drive arrangement, which helps the tractor manage heavy loads without failure.
This final drive is designed to handle the torque produced by the 3.1L diesel engine and the 58 horsepower output. It supports both 2WD and 4WD models and ensures reliable power delivery to the rear wheels when pulling implements or operating heavy equipment.
The type of final drive impacts service life, maintenance, and the maximum axle load the tractor can support over time.
| Feature | AGCO Allis 4660 |
|---|---|
| Final-Drive System | Planetary/Bull Gear |
| Power Handling | Supports 58 hp engine |
| Application | 2WD and selectable 4WD |
| Maintenance Needs | Regular inspection |
Tires & Track Options
You can select from multiple types of tires for the AGCO Allis 4660. Tire choices affect traction, ride comfort, and the type of work your tractor can perform.
Standard Front Tire Size (Ag / Turf / Industrial)
The standard front tire size for the AGCO Allis 4660 varies based on the tire type you choose. For agricultural (Ag) work, you typically use 9.5-24 tires, which give good soil grip and are suited for field operations.
If you need to protect grass surfaces, turf tires are available. These often come in wider sizes, such as 11L-15, to decrease ground pressure and avoid turf damage.
For industrial use on harder ground or construction sites, you may pick more durable front tires like 10.5/80-18, which handle rough surfaces and carry heavier loads. Your specific tire size will depend on how you plan to use your tractor.
When ordering, check your manual or consult a dealer for compatible sizes.
Standard Rear Tire Size
The AGCO Allis 4660 usually comes equipped with 16.9-30 rear Ag tires. These large-diameter tires provide stability and high traction in the field.
For turf applications, you may use wider, softer tires such as 21.5L-16.1, which help reduce soil compaction. Industrial rear tires, like 19.5L-24, are built for durability and resist punctures from sharp objects.
These tires don’t provide as much grip in muddy conditions, but they last longer on gravel or concrete surfaces. The correct rear tire size impacts ground clearance and pulling power, so make sure you select the right type for your tasks.
Check your tractor’s tire clearance and the rim size before upgrading or changing tire types.
Optional Duals / Tracks / Flotation Kits
AGCO Allis 4660 tractors can be fitted with dual-wheel kits on the rear to boost traction, especially in soft or wet soil. Duals are useful if you often work in muddy fields or pull heavy implements.
Some kits allow quick installation and removal so you can switch setups as needed. Tracks are not standard on this model, but aftermarket track systems can sometimes be added.
These are used to reduce ground pressure and minimize soil disturbance. Flotation kits are another common upgrade for the 4660.
These kits include extra-wide tires or wheels to better spread out the tractor’s weight, which prevents deep ruts and supports operation on soft ground. Before adding any optional tire, dual, or track system, review your tractor’s wheel hub compatibility and axle load ratings.
| Option | Typical Size / Type | Use Case | Main Benefit | Notes |
|---|---|---|---|---|
| Front Ag Tire | 9.5-24 | Field work | Good traction | Standard for most field applications |
| Front Turf Tire | 11L-15 | Lawn, soft ground | Reduces damage to turf | Wider for less ground pressure |
| Front Industrial Tire | 10.5/80-18 | Construction, loaders | Handles heavy loads | Good for hard or rocky ground |
| Rear Ag Tire | 16.9-30 | Tillage, pulling implements | High traction | Stable and good for heavy-duty tasks |
| Rear Turf Tire | 21.5L-16.1 | Grass, lawns | Soil protection, minimal ruts | Broad footprint |
| Rear Industrial Tire | 19.5L-24 | Loader work, rough terrain | Puncture resistance | Not ideal for wet or loose soil |
| Dual Rear Wheels | Matches standard rear size | Wet or soft fields | Improved traction & flotation | Check axle ratings |
| Flotation Kit | Extra-wide tires/wheels | Soft, marshy soil | Reduces soil compaction | Can be added as aftermarket upgrade |
| Tracks (Aftermarket only) | Rubber track assembly | High flotation on soft soil | Low ground pressure | Professional installation may be required |
Dimensions & Weight
Understanding the exact size and weight can help you plan for transportation, storage, and use in different work environments. Precise specifications guide you in comparing the AGCO Allis 4660 with similar models and choosing the right fit for your needs.
| Specification | Measurement |
|---|---|
| Wheelbase | 83.2 inches (211 cm) |
| Overall Length | 146 inches (370 cm) |
| Overall Width (Min. Tread) | 70.4 inches (178 cm) |
| Height to ROPS/Cab | 94.4 inches (239 cm) |
| Ground Clearance (2WD) | Not Specified |
| Shipping Weight | 4,762–4,800 lbs |
| Operating Weight (with fluids) | Approx. 4,800 lbs |
Wheelbase
The AGCO Allis 4660 features a wheelbase of 83.2 inches (211 cm). This distance between the front and rear axles gives the tractor a steady, balanced stance.
A longer wheelbase improves ride comfort, especially on bumpy ground. It also helps with traction and pulling implements.
If you use your tractor for both fieldwork and transportation, this wheelbase size offers a good compromise between stability and maneuverability. The 83.2-inch wheelbase supports safe operation even when handling heavier loads or working on slopes.
You may notice improved tracking and less bouncing during operation compared to shorter wheelbase models.
Overall Length
The overall length of the AGCO Allis 4660 is 146 inches (370 cm). This measurement gives you the distance from the front tip to the rear end of the tractor.
Knowing the overall length is important if you need to fit the tractor inside a garage or trailer. This length allows for mounting front weights or attaching a loader without making the tractor too unwieldy.
With a length of 146 inches, the tractor has a footprint that makes it practical for many types of farm buildings, gates, and parking areas. If space is limited, planning for this length can help you avoid problems later.
Overall Width (Minimum Tread)
This model has a minimum overall width of 70.4 inches (178 cm), which is measured at the smallest tread setting. This width gives you solid stability, helping prevent tipping when crossing uneven terrain.
The minimum tread setting is usually used when needing to fit through narrow gates or rows, such as in orchards or gardens. If you set your tractor to its minimum width, be careful on slopes.
Even with a wide stance, always drive slowly in difficult conditions. The adjustable tread allows you to widen the stance if more stability is needed.
Height To ROPS / Cab
The height to the ROPS (Rollover Protective Structure) or cab on this model is 94.4 inches (239 cm). This vertical measurement is key for entering barns or sheds with tight clearances.
The ROPS adds safety but also increases the overall height, so be sure to check your building doorways before moving the tractor. If your tractor has a cab, the height will be about the same as the ROPS version.
Ensure you have enough vertical space to work comfortably and park safely inside your buildings.
Ground Clearance
Ground clearance for the AGCO Allis 4660 is not always specified in published sources. On average, models in this class have clearances in the range of 13–16 inches for 2WD configurations.
Adequate ground clearance is important for working over rough or uneven surfaces. It helps prevent damage to the tractor’s underside from rocks and debris in fields.
You should always check underneath your tractor before heading into particularly rocky fields. Higher clearance improves the ability to work through tall crops or grassy pastures without snagging.
Shipping Weight
The shipping weight of the AGCO Allis 4660 is between 4,762 and 4,800 lbs (about 2,160 to 2,177 kg), depending on configuration. Shipping weight means the tractor without operator, fuel, or additional fluids.
This weight helps transport companies plan for safe loading and shipping over long distances. Knowing this number is important if you arrange for delivery or pick up.
This weight is typical for tractors in the 58-horsepower category. Heavier weight often helps with traction for pulling equipment but could require heavier-duty transport trailers.
Operating Weight (With Fluids)
The operating weight—also often called the curb weight—refers to the tractor filled with all fluids, including engine oil, hydraulic oil, and a full tank of fuel. For the AGCO Allis 4660, the operating weight is about 4,800 lbs (2,177 kg).
It can go up if extra accessories, wheel weights, or liquid ballast in the tires are added. This figure is important for stability and safety when driving over various terrain.
Always remember that more weight adds to ground pressure, which can affect field conditions in wet weather. If using attachments or carrying loads, the operating weight will help you decide what your tractor can safely handle.
Fuel & Fluids
You need to keep your AGCO Allis 4660 running with the right kinds and amounts of fluids. Using proper fuel, engine oil, and hydraulic or transmission fluids will help maintain performance and prevent damage.
| Fluid Type | Capacity | Fluid Spec/Notes |
|---|---|---|
| Fuel Tank | 17.2 gallons* | Diesel, direct injection |
| DEF Tank | Not Applicable | N/A |
| Engine Oil Capacity | 8.8 quarts (approx) | 15W-40 recommended |
| Hydraulic/Transmission Oil | 11.1 gallons* | 80W-90 or universal fluid |
*Values can vary slightly by year/model.
Fuel-Tank Capacity
The AGCO Allis 4660 comes with a diesel fuel tank that holds about 17.2 gallons. This large tank supports long field work without frequent stops.
You should use clean, high-quality diesel fuel. The 4660 uses a direct injection system, so clean fuel is important to keep the injectors and pumps in good condition.
Check the fuel level before starting work each day. Water or dirt in diesel can harm the engine, so try to refuel in clean surroundings.
Always use the correct fuel cap to avoid contamination.
DEF-Tank Capacity (If Applicable)
The AGCO Allis 4660 does not use a DEF (Diesel Exhaust Fluid) system. DEF is common on new tractors for emissions control, but the 4660 predates these requirements.
There is no DEF tank or need to add DEF fluid to this tractor. That means less hassle with extra fluid checks or storage.
You only need to focus on diesel fuel and the maintenance of your regular engine systems.
Engine Oil Capacity
This tractor holds about 8.8 quarts of engine oil. Most users choose 15W-40 oil, which is suitable for a range of temperatures.
Oil needs to be checked regularly. Always fill to the “full” mark on the dipstick, but don’t overfill.
Clean oil keeps your engine running smoothly and helps prevent wear. Change the oil and filter on schedule.
Dirty oil can lead to buildup or damage the direct injection system.
Hydraulic/Transmission Oil Capacity
The AGCO Allis 4660 uses a combined system for the transmission and hydraulics, holding about 11.1 gallons of fluid.
You have a choice: use 80W-90 gear oil or a universal tractor hydraulic/transmission fluid, depending on your climate and usage.
Check the fluid level at regular intervals. Low or dirty fluid can lead to slow hydraulics or transmission problems.
Always use the fill points shown in your operator’s manual. Make sure the oil is not leaking from any seals or hoses.
Electrical System
The AGCO Allis 4660 features a standard 12-volt electrical setup designed to support reliable starting and dependable operation.
| Feature | Specification | Details |
|---|---|---|
| Ground Type | Negative | 12V Negative Ground System |
| Alternator Output | About 35-45 Amps (varies by model) | Keeps the battery and system charged |
| Battery Voltage | 12 Volts | Single battery system |
| Battery CCA | 600–800 CCA | Designed for cold starts |
Ground Type (Negative / Positive)
Your AGCO Allis 4660 tractor uses a 12-volt, negative ground electrical system. This grounding method is standard for most modern tractors.
The negative cable connects from the battery to the frame or chassis. Negative ground reduces the risk of electrical shorts and is compatible with most aftermarket accessories.
When working on the electrical system, always disconnect the negative cable first to prevent accidental short circuits. A solid ground connection ensures good starter operation and reliable lighting.
Regularly check for corrosion at grounding points to avoid poor performance or starting issues.
Alternator / Charging System
The charging system on the AGCO Allis 4660 includes a belt-driven alternator mounted on the engine. The alternator keeps the battery fully charged and supplies power to electrical accessories while the engine runs.
Most models use alternators rated between 35 and 45 amps, suitable for the tractor’s basic electrical demands. The alternator has an internal voltage regulator to keep voltage output stable.
This protects sensitive components from damage caused by voltage spikes. You should check the alternator belt for proper tension and wear every season.
A loose or worn belt can cause charging problems and lead to battery drain.
Charging Output (Amps)
The alternator provides a charging output in the range of about 35 to 45 amps, depending on the exact unit installed. This is sufficient to keep the battery charged under typical farm use, including running lights and PTO-powered equipment.
The charging output supports not just the starting battery but also your electrical systems such as work lights, dash indicators, and additional electronics. If you add extra accessories with higher power needs, you may need a higher output alternator.
Watch for warning lights on the dash as they often indicate issues with alternator output or charging performance. Low charging can result in battery failure, requiring prompt attention.
Battery Voltage
You will find a single 12-volt automotive-style battery on the AGCO Allis 4660. The 12V system is standard across similar tractors and supports both starting and all electrical demands.
The battery is normally located under a metal tray or near the engine for easy access. Always use a battery matched to the original voltage rating.
Operating with the correct voltage helps prevent system failures and avoids damage to electrical parts. Check battery terminals regularly for corrosion or tightness.
Dirty or loose terminals can cause starting and charging problems.
Battery CCA Rating
The AGCO Allis 4660 typically uses a battery rated at 600 to 800 cold cranking amps (CCA). This rating is important for reliable starts, especially in colder weather or after the tractor has sat unused for a period.
CCA measures the battery’s ability to deliver a strong current at 0°F for 30 seconds while maintaining at least 7.2 volts. Higher CCA numbers mean better cold starting performance.
When replacing the battery, always select one with the recommended CCA rating. Using a battery with too low a CCA may result in slow or failed starts, especially during winter or in tough conditions.
Total Cost Of Ownership Metrics
When owning an AGCO Allis 4660 Tractor, you need to keep track of regular service, repair costs, equipment value over time, and fuel use.
Careful management of these points will help control costs and keep performance steady.
Recommended Service Intervals
To keep your tractor running well, follow the regular service schedule closely. Oil changes and fuel filter replacements are needed every 100 hours of use.
You should check and change the air filter every 200 hours, especially if you operate in dusty conditions. Hydraulic and transmission fluids need changing every 400 hours.
Make sure to grease all fittings every 50 hours. Check the battery and clean terminals every month.
Keep an eye on tire pressure and drivetrain components each time you attach or detach equipment.
Key Service Intervals (Hours):
| Task | Interval |
|---|---|
| Engine Oil/Filter Change | 100 |
| Fuel Filter Replacement | 100 |
| Air Filter Replacement | 200 |
| Hydraulic Fluid Change | 400 |
| Transmission Fluid Change | 400 |
| Grease Fittings | 50 |
Estimated Annual Maintenance Cost
Yearly maintenance cost for the AGCO Allis 4660 is based on several factors. Parts such as filters, oil, lubricants, and minor repairs add up.
On average, you can expect to spend $700 to $1,200 per year if you operate the tractor around 500 hours and keep up on regular servicing. Unexpected repairs, such as hydraulic leak fixes or electrical problems, can add extra costs, especially as the tractor ages.
If you use extra attachments like loaders or mowers, count on added costs for maintaining and checking those items as well.
Breakdown of typical yearly costs:
| Category | Estimated Annual Cost (USD) |
|---|---|
| Fluids/Filters | $300-$400 |
| Tire Care | $100-$200 |
| General Repairs | $200-$400 |
| Attachments Upkeep | $100-$200 |
| Total | $700-$1,200 |
Depreciation Curve (% Per Year)
The AGCO Allis 4660, with an original price around $22,500 in 1997, shows a slower depreciation rate compared to newer models. For the first five years, expect about 7-10% drop per year as it loses value quickly when new.
After about ten years, depreciation slows and the value levels off due to demand for used utility tractors. If you maintain your tractor well and document service, the value drop each year can become as low as 3-5% per year after age 10.
Attachments in good shape will also hold their value and add to the resale price.
Sample Depreciation Curve:
| Years Owned | Value Remaining (%) |
|---|---|
| Year 0 | 100 |
| Year 5 | ~60 |
| Year 10 | ~40 |
| Year 15+ | 30-35 |
Fuel Consumption @ Rated Load (L Hr⁻¹)
When working at full rated power, the AGCO Allis 4660 uses about 12.9 liters of diesel per hour (3.4 gallons/hour). This figure is tested with continuous load, such as field tilling or hauling.
Fuel use can be higher under very heavy loads or bad field conditions. When running lighter jobs or using PTO-driven attachments like mowers, expect somewhat lower consumption.
Keep your engine tuned, air filter clean, and tires properly inflated to get the best fuel economy.
Typical Fuel Consumption Table:
| Workload Type | L/hr | Comments |
|---|---|---|
| Heavy Tillage | 12.9 | Near maximum rated load |
| General Field Use | 9-12 | Varies by job and attachment |
| Light PTO Operations | 8-10 | Mowing, raking, etc. |
Cost Example: If diesel is $1.10/L, running at full load for 10 hours would cost about $141 in fuel.
Total Cost of Ownership Table
| Metric | Typical Value/Range | Notes |
|---|---|---|
| Oil Change Interval | 100 hours | Critical for engine life |
| Annual Maintenance Cost | $700-$1,200 | Includes fluids, minor repairs, attachments |
| Depreciation (per year) | 7-10% (first 5 yrs), 3-5% (after 10 yrs) | Slows as tractor ages |
| Fuel Consumption @ rated | 12.9 L/hr (3.4 gal/hr) | At full power |
| Key Attachment Considerations | Higher service & maintenance | Implements add to costs |