Caterpillar D7D Specs ( 1959-1961 )
Overview
The Caterpillar D7D is an agricultural crawler tractor produced in Peoria, Illinois, between 1959 and 1961. It features a 13.6L four-cylinder turbocharged diesel engine rated at 1200 RPM and equipped with a 2-cylinder pony engine starter. The mechanical configuration includes a 5-speed gear transmission, manual steering clutches, and 20-inch wide tracks.
Ideal Applications
Tested Drawbar Performance:
According to Nebraska Tractor Test 710, the D7D achieved a maximum drawbar power of 109.79 hp and a maximum pull of 28,274 lbs while consuming 8.3 gallons of fuel per hour.
Engine and Starting System:
The 831 cubic inch liquid-cooled engine utilizes a 15.7:1 compression ratio and an oil bath air cleaner, with ignition managed via a 2-cylinder gasoline pony engine.
Chassis and Operational Dimensions:
The tractor is built on a 74-inch gauge with a shipping weight of 24,330 lbs and maintains a 15.5-inch ground clearance across its 162.25-inch total length.
Production
| Description | Agricultural Crawler tractor / Built in Peoria, Illinois, USA |
|---|---|
| Manufacturer | Caterpillar |
Engine
| Engine type | Caterpillar 13.6L 4-cyl diesel |
|---|---|
| Fuel tank | 65 gal (246.0 L) |
| Air cleaner | oil bath |
| Bore/Stroke | 5.75x8.00 inches (146 x 203 mm) |
| Compression | 15.7:1 |
| Description | Caterpillar / turbocharged diesel / 4-cylinder / liquid-cooled |
| Displacement | 831 ci (13.6 L) |
| Rated RPM | 1200 |
| Starter type | 2-cylinder pony engine |
| Drawbar (tested) | 109.79 hp (81.9 kW) |
Transmission
| Clutch | dry metallic disc / dry metallic disc |
|---|---|
| Gears | 5 forward and 4 reverse / 5 forward and 4 reverse |
| Oil capacity | 40 qts (37.9 L) / 40 qts (37.9 L) |
| Transmission type | 5-speed gear |
| Type | gear / gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Contracting band brakes |
| Drive | crawler |
| Steering | manual clutches |
Dimensions & Tires
| Clearance (drawbar) | 17.25 inches (43 cm) |
|---|---|
| Gauge | 74 inches (187 cm) |
| Ground clearance | 15.5 inches (39 cm) |
| Height (hood) | 80 inches (203 cm) |
| Length | 162.25 inches (412 cm) |
| Shipping weight | 24,330 lbs (11036 kg) |
| Width | 97 inches (246 cm) |
Caterpillar D7D Tracks
| Width | 20 inches (50 cm) |
|---|
Dimensions & Tracks
| Description | 20-inch tracks |
|---|---|
| Weight | 24,330 lbs (11036 kg) |
Nebraska Tractor Test 710
| Description | Turbo diesel 5-speed crawlerAugust 3 - 11, 1959Link: Nebraska Tractor Test 710 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
|---|---|
| Fuel use | 8.3 gal/hour (31.4 l/hour) |
| Max power | 109.79 hp (81.9 kW) |
| Max pull | 28,274 lbs (12825 kg) |