Caterpillar D7C
The Caterpillar D7C is a tractor produced by Caterpillar. It is equipped with a 831 ci 13.6 L engine. The listed engine power is Diesel (listed): 128 hp / 95.4 kW. Transmission: 5 forward and 4 reverse. Drive type: crawler. Operating weight: 25970 to 26930 pounds.
Engine Power
Diesel (listed): 128 hp / 95.4 kW
Drive & Traction
crawler
Fuel & Capacities
85 gal
321.7 L
Transmission
5 forward and 4 reverse
Operating Weight
26930 lbs
12215 kg
Overview
 | 1955 - 1958
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | Caterpillar |
Agricultural Crawler tractor | |
Built in Peoria, Illinois, USA | |
Caterpillar D7C Engine | |
|---|---|
Caterpillar 13.6L 4-cyl diesel | |
Fuel tank | 85 gal
321.7 L |
Engine details ...  | |
Caterpillar D7C Transmission | |
|---|---|
5-speed gear | |
Transmission details ...  |
Caterpillar D7C Power | |
|---|---|
Engine | 128 hp
95.4 kW |
Drawbar (claimed) | 102 hp
76.1 kW |
Drawbar (tested) | 103.65 hp
77.3 kW |
Belt (tested) | 121.70 hp
90.8 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Steering | manual clutches |
Contracting band brakes | |
Open operator station. Cab optional with heater. | |
Dimensions & Tracks | |
|---|---|
Weight | 25970 to 26930 pounds |
20-inch tracks | |
Full dimensions and tracks ...  | |
References | |
|---|---|
 | |
D7 Series C published in 1955, by Caterpillar |
Engine
Engine Detail — 831 ci / 13.6 L Diesel
Manufacturer | Caterpillar D339 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 831 ci
13.6 L |
Bore/Stroke | 5.75x8.00 inches
146 x 203 mm |
Power | 128 hp
95.4 kW |
Air cleaner | oil bath |
Rated RPM | 1200 |
Starter | gasoline pony engine |
Starter volts | 6 |
Oil capacity | 22 qts
20.8 L |
Coolant capacity | 68 qts
64.4 L |
Caterpillar D7C Engine | |
|---|---|
 |
Transmission
Transmission — 5 forward and 4 reverse gear
Type | gear |
Gears | 5 forward and 4 reverse |
Clutch | metallic wet disc |
Oil capacity | 43 qts
40.7 L |
 | |
Dimensions
Caterpillar D7C Tracks | |
|---|---|
Width | 20 inches
50 cm |
Dimensions | |
|---|---|
Length | 167.6 inches
425 cm |
Width | 97 inches
246 cm |
Height (hood) | 81.25 inches
206 cm |
Shipping weight | 25970 lbs
11779 kg |
Operating weight | 26930 lbs
12215 kg |
Ground clearance | 15.5 inches
39 cm |
Clearance (drawbar) | 17.25 inches
43 cm |
Gauge | 74 inches
187 cm |
Tests
Nebraska Tractor Test 582 | |
|---|---|
Diesel 5-speed crawler
July 23 - August 6, 1956
Link: Nebraska Tractor Test 582 file | |
Belt power (max) | 121.70 hp
90.8 kW |
Belt fuel use (max) | 9.7 gal/hour
36.7 l/hour |
Drawbar performance | |
Max power | 103.65 hp
77.3 kW |
Gear 2 used for power test. | |
Max pull | 26,286 lbs
11923 kg |
Gear 1 used for pull test. | |
Photos
Caterpillar D7C tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Caterpillar D7C based on its 128 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm) | Heavy Duty | Heavy primary tillage; semi-mounted hitch recommended. |
Rotary Cutter / MowerMowing & Clearing | 10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼 | Heavy Duty | Wide swath pasture and crop residue shredding. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙 | Commercial / Field Scale | Wide commercial field leveling; requires hydraulic remotes. |
Hay BalerHay & Forage | 5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机 | Heavy Duty | High density baling; requires minimum 85 PTO HP. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Caterpillar D7C.
Estimated Continuous Field Runtime: 12.8 hrs
Approximately 12.8 hours of continuous field operation at ~75% rated power on a full tank (85 gal / 321.8 L).
Estimated 75% Load Fuel Burn~6.7 gal/hr (25.2 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Caterpillar D7C Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Caterpillar D7C.
Converted Equivalents:
Horsepower (HP)128 hp
Kilowatts (kW)95.4 kW
Metric Horsepower (PS / CV)129.8 PS
Direct Competitor Comparison
Compare Caterpillar D7C against same-era industry alternatives in the same horsepower class.
Current Model
Caterpillar
Caterpillar D7C
Engine Power:Diesel (listed): 128 hp / 95.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester Hydro 186
Engine Power:115.6
Production Years:1976 - 1981
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