| Manufacturer | Oliver |
| Price | 14,250(USD) |
| Model | 1955 |
| Equipment Type | Row-Crop Tractors |
| Factory |
NEBRASKA TRACTOR TEST 1055 2
| Description | Diesel 18-speed 2WD October 15 - 24, 1970 Link: Nebraska Tractor Test 1055 file PTO performance Drawbar performance Gear 3-direct used for power test Gear 2-under used for pull test |
| Power at rated engine speed | 108.16hp / 80.7kW |
| Fuel use | 7.0gal/hour / 26.5l/hour |
| Max power | 90.32hp / 67.4kW |
| Max pull | 12,639lbs / 5733kg |
OLIVER 1955 POWER
| PTO (claimed) | 108hp / 80.5kW |
| Drawbar (tested) | 90.32hp / 67.4kW |
| PTO (tested) | 108.16hp / 80.7kW |
ENGINE DETAIL
The Oliver 1955 tractor features a robust turbocharged 6-cylinder diesel engine with a considerable displacement of 5.1L, providing ample torque for agricultural tasks. Its design includes a dry air cleaner that contributes to engine efficiency, although it may require more frequent maintenance compared to oil bath systems. With a rated RPM of 2400, this tractor is suitable for high-powered tasks, but users should be mindful of the 20-quart coolant capacity to prevent overheating during prolonged operations.
| Description | Oliver-Waukesha turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 310ci / 5.1L |
| Bore/Stroke | 3.875x4.375inches / 98x 111mm |
| Air cleaner | dry |
| Rated RPM | 2400 |
| Starter volts | 12 |
| Coolant capacity | 20qts / 18.9L |
OLIVER 1955 ENGINE
The Oliver 1955 tractor features a robust Oliver-Waukesha 5.1L 6-cylinder diesel engine, known for its durability and torque delivery, making it suitable for heavy-duty agricultural tasks. With a 35-gallon fuel tank, operators can expect extended operational periods between refueling, enhancing productivity on larger farming operations. However, its size and weight may limit maneuverability in tighter spaces, making it less ideal for smaller fields or gardens.
| Description | Oliver-Waukesha 5.1L 6-cyl diesel |
| Fuel tank | 35gal / 132.5L |
TRANSMISSIONS OVERVIEW
The Oliver 1955 tractor features a robust 6-speed gearbox complemented by an 18-speed partial power shift, enhancing operational efficiency and versatility in various field conditions. This configuration allows for smoother transitions between speeds under load, enabling optimal power management during tasks like plowing or hauling. However, operators may need training to maximize the benefits of the shifting system, particularly in complex terrain.
| Description | 6-speed gear 18-speed partial power shift |
TRANSMISSION 1
The Oliver 1955 tractor features a 6 forward and 2 reverse gear configuration, providing operators with flexibility in various field applications. The 330mm cerametallic clutch offers reduced wear and enhanced heat resistance, ensuring reliable engagement under heavy loads. However, proper maintenance of the clutch system is critical to prevent premature failure, especially during demanding tasks.
| Type | gear |
| Gears | 6 forward and 2 reverse |
| Clutch | 330mm cerametallic disc |
SPEEDS 1
| Description | With 18.4-38 rear tires |
TRANSMISSION 2
The Oliver 1955 tractor features a Hydraul-Shift transmission with a partial power shift system, allowing seamless transitions between over-, under-, and direct-drive across its 18 forward and 6 reverse gears. This design enhances operational efficiency and responsiveness, beneficial for varying terrains and work applications. However, the 330mm cerametallic disc clutch may present durability challenges under heavy loads, necessitating careful maintenance to optimize performance.
| Transmission | Hydraul-Shift |
| Type | partial power shift |
| Gears | 18 forward and 6 reverse |
| Clutch | 330mm cerametallic disc |
| Description | The Hydraul-Shift overs a power shift between over-, under-, and direct-drive for each gear |
SPEEDS 2
| Description | With 18.4-38 rear tires |
MECHANICAL
The Oliver 1955 tractor features a versatile 4x2 2WD and optional 4x4 MFWD, enhancing traction in varied conditions. Its power steering facilitates ease of maneuverability, while the differential hydraulic dry disc brakes provide reliable stopping power but may require more maintenance compared to wet systems. The 6-speed gear and optional 18-speed partial power shift transmission allow for efficient speed adjustments, making it suitable for both light fieldwork and heavy-duty applications.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Steering | power |
| Brakes | differential hydraulic dry disc |
| Cab | Open operator station. Optional two-post ROPS and cab |
| Transmissions | 6-speed gear 18-speed partial power shift |
HYDRAULICS
| Type | closed center |
| Pump flow | 20gpm / 75.7lpm |
TRACTOR HITCH
| Rear Type | II/III |
| Rear lift | 6000lbs / 2721kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000 |
OLIVER 1955 TIRES
The Oliver 1955 tractor features a robust tire configuration with 11L-15 front AG tires for enhanced maneuverability and 20.8-38 rear AG tires for increased stability and traction during heavy pulling operations. The wide rear tires improve flotation in soft soils, making it advantageous for tillage and planting in less stable ground conditions. However, the large rear tires may limit turning radius in tight spaces, posing challenges in smaller fields or confined work areas.
| Ag front | 11L-15 |
| Ag rear | 20.8-38 |
DIMENSIONS
| 2WD Wheelbase | 103inches / 261cm |
| 4WD Wheelbase | 86.25inches / 219cm |
| 2WD Length | 159.5inches / 405cm |
| 4WD Length | 152.375inches / 387cm |
| Width | 80.625inches / 204cm *Minimum width |
| Height (steering wheel) | 85.5inches / 217cm |
| Operating weight | 11,250lbs / 5103kg |
| Ballasted weight | 16,220lbs / 7357kg |
| 2WD Ground clearance | 25.5inches / 64cm |
| 4WD Ground clearance | 13.5inches / 34cm |
| 2WD Front tread | 61.5 to 87.5inches / 156to 222cm |
| 4WD Front tread | 60/70.75/80inches / 152/179/203cm |
| Rear tread | 57 to 119.5inches / 144to 303cm |
DIMENSIONS & TIRES
The Oliver 1955 tractor, with its 2WD wheelbase of 103 inches, is suitable for stability in flat terrain, while the 4WD variant provides enhanced maneuverability in uneven or slippery conditions, albeit at a shorter wheelbase of 86.25 inches. Its substantial weight of 11,250 lbs ensures good traction and stability but may limit agility in tighter spaces. The tire specifications of 11L-15 in the front and 20.8-38 in the rear offer a balance of flotation and grip, making it versatile for various agricultural applications but requiring consideration of soil compaction in sensitive areas.
| 2WD Wheelbase | 103inches / 261cm |
| 4WD Wheelbase | 86.25inches / 219cm |
| Weight | 11,250lbs / 5103kg |
| Front tire | 11L-15 |
| Rear tire | 20.8-38 |
1955 SERIAL NUMBERS
| 1970 | 222-304 |
| 1971 | 226-858 |
| 1972 | 232-958 |
| 1973 | 239-032 |
| 1974 | 247-871 |
| Final | 253-050 |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |