Caterpillar Seventy

Last Updated: July 2024

Overview

The Caterpillar Seventy is a robust tractor with a gasoline engine and liquid cooling system. It has 4 cylinders with a bore of 7.5 inches and a stroke of 8 inches. The engine operates at 1000 RPM. The transmission offers 6 forward gears and 2 reverse gears. Its operating weight is 20,200 lbs including the operator. The tractor features an upholstered seat, pressure lubrication, and a combination air cleaner.

Key Specifications

Transmission: Gear

Operating Weight: 20200

Fuel Type: Gasoline

Image Gallery

Caterpillar Seventy Tractor

Technical Specifications

Engine

Manufacturer: Caterpillar
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Gasoline
Induction Type: -
Cylinders: 4
Displacement (ci): 1310
Bore (in): 7.5
Stroke (in): 8
Rated RPM: 1000
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 6
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): -
Width (in): 18
Height (in): -
Operating Weight (lb): 20200

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): -
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: -
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: May 15 to June 6, 1933

Maximum Power and Fuel Consumption

Manufacturer's Rated Power (Drawbar): 58.28 HP
Manufacturer's Rated Power (Belt): 77.44 HP
Fuel Type: Gasoline

Drawbar Performance

Advertised Speeds (mph):
- First Gear: 1.7 mph
- Second Gear: 2.3 mph
- Third Gear: 2.7 mph
- Fourth Gear: 3.1 mph
- Fifth Gear: 3.7 mph
- Sixth Gear: 5.0 mph
- Reverse: 1.7 mph and 2.7 mph

Engine and Mechanical Details

Bore and Stroke: 7.5 x 8 inches
Rated RPM: 1000 RPM
Total Weight (with operator): 20,600 pounds
Lubrication: Pressure
Air Cleaner: Combination centrifugal, oil, and treated wire

Additional Information

Total Operating Time: 51 hours
Carburetor Setting: 98.0% of maximum
Exhaust Valve Spring Failure: On #2 cylinder at the end of the rated load drawbar test

Nebraska Tractor Test Lab. (1933). Test 213: Caterpiller Model 70. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/820