| Manufacturer |
Cockshutt |
| Price |
6,000(USD) |
| Model |
1550 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Charles City, Iowa, USA |
VARIANTS
NEBRASKA TRACTOR TEST 943 2
| Description |
Diesel Hydra-Power 2WD June 8 - 15, 1966 Link: Nebraska Tractor Test 943 file PTO performance Drawbar performance Gear 4-Hydra used for power test. Gear 2-Hydra used for pull test |
| Power at rated engine speed |
53.50hp / 39.9kW |
| Fuel use |
4.4gal/hour / 16.7l/hour |
| Max power |
45.7hp / 34.1kW |
| Max pull |
6,636lbs / 3010kg |
NEBRASKA TRACTOR TEST 944 2
| Description |
Gasoline Hydra-Power 2WD June 8 - 16, 1966 Link: Nebraska Tractor Test 944 file PTO performance Drawbar performance Gear 4-Hydra used for power test Gear 2-Hydra used for pull test |
| Power at rated engine speed |
53.3hp / 39.7kW |
| Fuel use |
4.9gal/hour / 18.5l/hour |
| Max power |
45.4hp / 33.9kW |
| Max pull |
6,799lbs / 3084kg |
COCKSHUTT 1550 POWER
| Gas PTO (claimed) |
53hp / 39.5kW |
| Diesel PTO (claimed) |
53hp / 39.5kW |
| LP-gas PTO (claimed) |
51hp / 38.0kW |
| Drawbar (tested) |
45.7hp / 34.1kW |
| PTO (tested) |
53.50hp / 39.9kW |
ENGINES OVERVIEW
The Cockshutt 1550 is equipped with a versatile Oliver 3.8L 6-cylinder engine available in diesel, gasoline, and LP-gas variants, allowing users to select the most suitable fuel type for their agricultural needs. Key advantages include the robustness and fuel efficiency of the diesel engine, while the gasoline and LP-gas options provide a quieter operation and cleaner emissions. However, users must consider fuel availability and cost implications; diesel may offer better torque for heavy loads, while gasoline and LP-gas variants could be more accessible in certain regions.
| Description |
Oliver 3.8L 6-cyl diesel Oliver 3.8L 6-cyl gasoline Oliver 3.8L 6-cyl LP-gas |
ENGINE DETAIL 1
The Cockshutt 1550 features a 6-cylinder diesel engine with a displacement of 232 ci (3.8L) and a favorable compression ratio of 16.5:1, providing robust torque for heavy-duty tasks. A dry air cleaner enhances engine longevity by reducing contaminants, although it may require more frequent maintenance compared to wet systems. The rated RPM of 2200 supports efficient operation in farming scenarios, but users should ensure proper oil (5 qts) and coolant (20 qts) levels to maintain optimal engine performance and cooling efficiency.
| Description |
Oliver diesel 6-cylinder liquid-cooled |
| Displacement |
232ci / 3.8L |
| Bore/Stroke |
3.625x3.75inches / 92x 95mm |
| Air cleaner |
dry |
| Compression |
16.5:1 |
| Rated RPM |
2200 |
| Starter volts |
12 |
| Oil capacity |
5qts / 4.7L |
| Coolant capacity |
20qts / 18.9L |
ENGINE DETAIL 2
The Cockshutt 1550 tractor features a 6-cylinder gasoline engine with a 232ci displacement and an 8:1 compression ratio, providing a balanced power-to-weight ratio at its rated RPM of 2200, making it suitable for moderate fieldwork. Its dry air cleaner contributes to easier maintenance and longevity of engine life, though it may be less efficient in dusty conditions compared to oil-bath filters. The coolant capacity of 20 quarts ensures adequate thermal management for sustained operation; however, users should routinely check levels to prevent overheating during extended use.
| Description |
Oliver gasoline 6-cylinder liquid-cooled |
| Displacement |
232ci / 3.8L |
| Bore/Stroke |
3.625x3.75inches / 92x 95mm |
| Air cleaner |
dry |
| Compression |
8:1 |
| Rated RPM |
2200 |
| Starter volts |
12 |
| Oil capacity |
5qts / 4.7L |
| Coolant capacity |
20qts / 18.9L |
ENGINE DETAIL 3
The Cockshutt 1550 tractor is powered by an Oliver LP-gas 6-cylinder engine with a 232ci (3.8L) displacement and an 8.75:1 compression ratio, making it efficient for farm applications in propane-rich environments. Its dry air cleaner system requires regular maintenance for optimal performance, while the oil and coolant capacities (5qts and 20qts, respectively) indicate moderate servicing needs. Operating at a rated RPM of 2200, this tractor provides solid power for various agricultural tasks, but the reliance on LP-gas may limit availability in some regions.
| Description |
Oliver LP-gas 6-cylinder liquid-cooled |
| Displacement |
232ci / 3.8L |
| Bore/Stroke |
3.625x3.75inches / 92x 95mm |
| Air cleaner |
dry |
| Compression |
8.75:1 |
| Rated RPM |
2200 |
| Starter volts |
12 |
| Oil capacity |
5qts / 4.7L |
| Coolant capacity |
20qts / 18.9L |
COCKSHUTT 1550 ENGINES
The Cockshutt 1550 tractor is powered by the versatile Oliver 3.8L 6-cylinder engine available in diesel, gasoline, and LP-gas configurations, providing flexibility to match fuel availability and operational needs. Its fuel tank capacities are consistent for diesel and gasoline at 27.5 gallons, while the LP-gas configuration offers a larger 34-gallon capacity, with optional fender tanks extending total capacity to 78 gallons—ideal for extended operations without frequent refueling. Operators should consider fuel type implications on performance and efficiency, as LP-gas may provide cleaner combustion and lower emissions, but potentially higher operating costs compared to diesel.
| Description |
Oliver 3.8L 6-cyl diesel Oliver 3.8L 6-cyl gasoline Oliver 3.8L 6-cyl LP-gas |
| Gas Fuel tank |
27.5gal / 104.1L |
| Diesel Fuel tank |
27.5gal / 104.1L |
| LP-gas Fuel tank |
34gal / 128.7L 78gal / 295.2L *Capacity of optional fender fuel tanks |
TRANSMISSIONS OVERVIEW
The Cockshutt 1550 features a 12-speed partial power shift transmission, allowing for smooth transitions between gears without clutching, which enhances operational efficiency in varying field conditions. However, the 6-speed unsynchronized gear can pose challenges during gear changes, requiring precise timing and experience, particularly in demanding scenarios like heavy tillage or transport. Overall, the combination of these transmission types provides versatility but demands skilled operation to fully utilize the tractor’s potential.
| Description |
12-speed partial power shift 6-speed unsynchronized gear |
TRANSMISSION 1
The Cockshutt 1550 tractor features a Hydra-Power partial power shift transmission, allowing for efficient gear changes with 12 forward and 4 reverse gears, which enhances its versatility in various field applications. The dry disc clutch, measuring 279.4mm, contributes to reliable performance and durability under heavy loads. With an oil capacity of 32 quarts (30.3L), proper maintenance is crucial for optimal transmission function and longevity, particularly in demanding operational conditions.
| Transmission |
Hydra-Power |
| Type |
partial power shift |
| Gears |
12 forward and 4 reverse |
| Clutch |
279.4mm dry disc |
| Oil capacity |
32qts / 30.3L |
| Description |
The Hydra-Power transmission provides a two-speed power shift between direct-drive and the lower Hydra-Power range |
TRANSMISSION 2
The Cockshutt 1550 tractor features an unsynchronized gear transmission with six forward and two reverse speeds, which may limit ease of shifting under load compared to synchronized systems. The 279.4mm dry disc clutch provides adequate engagement but can be sensitive to wear, particularly in heavy-duty applications. With an oil capacity of 32 quarts (30.3L), regular maintenance and monitoring of fluid levels are essential for optimal transmission performance.
| Type |
unsynchronized gear |
| Gears |
6 forward and 2 reverse |
| Clutch |
279.4mm dry disc |
| Oil capacity |
32qts / 30.3L |
MECHANICAL
The Cockshutt 1550 features a 4x2 2WD chassis, making it more suitable for light-duty applications and less ideal for challenging terrain. The power-assisted steering enhances maneuverability, while the open operator station, with the option for an Oliver Continental cab, may improve operator comfort but offers limited protection from environmental factors. With a 12-speed partial power shift transmission, operators can expect greater versatility and control in varying field conditions, although the 6-speed unsynchronized gear may pose shifting challenges.
| Chassis |
4x2 2WD |
| Steering |
power assist |
| Brakes |
disc |
| Cab |
Open operator station Oliver Continental cab optional |
| Transmissions |
12-speed partial power shift 6-speed unsynchronized gear |
TRACTOR HITCH
| Rear Type |
II/I |
| Control |
lower-link draft sensing |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540 / 1000 / 540 / 1000 |
COCKSHUTT 1550 TIRES
The Cockshutt 1550 features a versatile tire configuration with 6.00-16 front tires designed for good maneuverability, while the robust 15.5-38 rear tires provide excellent traction and stability for heavy-duty tasks. The combination is well-suited for agricultural applications, enabling effective operation in various soil conditions. However, the tractor's limited ground clearance may pose challenges in uneven terrains, necessitating careful navigation to avoid potential damage.
| Ag front |
6.00-16 |
| Ag rear |
15.5-38 |
DIMENSIONS
| Wheelbase |
99inches / 251cm |
| Length |
154.6inches / 392cm |
| Width |
81.5inches / 207cm |
| Height (exhaust) |
97.625inches / 247cm |
| Operating weight |
7000lbs / 3175kg |
| Ballasted weight |
8730lbs / 3959kg |
| Rear tread |
55 to 90.9inches / 139to 230cm |
DIMENSIONS & TIRES
The Cockshutt 1550 tractor features a wheelbase of 99 inches, providing good stability for heavy-duty operations while retaining maneuverability in tight spaces. With a weight of 7000 lbs, it can handle substantial loads; however, this weight might affect mobility on softer terrains. The tire specifications, with front tires at 6.00-16 and rear tires at 15.5-38, support effective traction and power transfer, making it suitable for field work and towing applications, although tire wear could be a concern under high-torque conditions.
| Wheelbase |
99inches / 251cm |
| Weight |
7000lbs / 3175kg |
| Front tire |
6.00-16 |
| Rear tire |
15.5-38 |
OLIVER 1610 LOADER
| Height (to pin) |
106.5inches / 270cm |
| Clearance, dumped bucket |
75.5inches / 191cm |
| Dump reach |
39inches / 99cm |
| Dump angle |
69° |
| Reach at ground |
54inches / 137cm |
| Breakout force (lift) |
3200lbs / 1451kg |
| Lift to full height (at pin) |
2000lbs / 907kg |
| Bucket width |
48inches / 121cm 68inches / 172cm |
1550 SERIAL NUMBERS
| 1965 |
157841 |
| 1966 |
168919 |
| 1967 |
184488 |
| 1968 |
196301 |
| 1969 |
213243 |
| Final |
218186 |
