Caterpillar D8
The Caterpillar D8 is a tractor produced by Caterpillar. It is equipped with a 1246 ci 20.4 L engine. The listed engine power is Diesel (listed): 115 hp / 85.8 kW. Transmission: 6 forward and 2 reverse. Drive type: crawler. Operating weight: 36520 lbs 16565 kg.
Engine Power
Diesel (listed): 115 hp / 85.8 kW
Drive & Traction
crawler
Fuel & Capacities
57 gal
215.7 L
Transmission
6 forward and 2 reverse
Operating Weight
36520 lbs
16565 kg
Overview
 | 1937 - 1965
Model year 1937-19411945-19551955-19581958-1965
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | Caterpillar |
Agricultural Crawler tractor | |
Built in Peoria, Illinois, USA | |
Caterpillar D8 Engine | |
|---|---|
Caterpillar 20.4L 6-cyl diesel | |
Fuel tank | 57 gal
215.7 L |
Engine details ...  | |
Caterpillar D8 Transmission | |
|---|---|
6-speed gear | |
Transmission details ...  |
Caterpillar D8 Power | |
|---|---|
Engine | 115 hp
85.8 kW |
Drawbar (tested) | 110.06 hp
82.1 kW |
Belt (tested) | 127.93 hp
95.4 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Open operator station. | |
Dimensions & Tracks | |
|---|---|
Weight | 36520 lbs
16565 kg |
20-inch tracks | |
Full dimensions and tracks ...  | |
Engine
Engine Detail — 1246 ci / 20.4 L Diesel
Manufacturer | Caterpillar D13000 |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 1246 ci
20.4 L |
Bore/Stroke | 5.75x8.00 inches
146 x 203 mm |
Power | 115 hp
85.8 kW |
Rated RPM | 850 |
Transmission
Transmission — 6 forward and 2 reverse gear
Type | gear |
Gears | 6 forward and 2 reverse |
 | |
Dimensions
Caterpillar D8 Tracks | |
|---|---|
Width | 20 inches
50 cm |
Dimensions | |
|---|---|
Length | 186 inches
472 cm |
Width | 101 inches
256 cm |
Height | 84 inches
213 cm |
Weight | 36520 lbs
16565 kg |
Gauge | 78 inches
198 cm |
Tests
Tractor Tests | |
|---|---|
NTTL 314: diesel 6-speed crawler | |
NTTL 357: diesel 6-speed crawler |
Nebraska Tractor Test 314 | |
|---|---|
Diesel 6-speed crawler
November 28, 1939 - November 30, 1938
Link: Nebraska Tractor Test 314 file | |
Belt power (max) | 109.64 hp
81.8 kW |
Belt fuel use (max) | 7.0 gal/hour
26.5 l/hour |
Drawbar performance | |
Max power | 96.67 hp
72.1 kW |
Gear 2 used for power test. | |
Max pull | 26110 lbs
11843 kg |
Gear 1 used for pull test. | |
Nebraska Tractor Test 357 | |
|---|---|
Diesel 6-speed crawler
October 11 - 16, 1940
Link: Nebraska Tractor Test 357 file | |
Belt power (max) | 127.93 hp
95.4 kW |
Belt fuel use (max) | 8.6 gal/hour
32.6 l/hour |
Drawbar performance | |
Max power | 110.06 hp
82.1 kW |
Gear 2 used for power test. | |
Max pull | 26208 lbs
11887 kg |
Gear 1 used for pull test. | |
Photos
Caterpillar D8
Caterpillar D8
Recommended Implements & Sizing Guide
Engineering recommendations for Caterpillar D8 based on its 115 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 | 10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙 | Heavy Duty | Aggressive residue cutting in corn/cotton stubble. |
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 D8.
Estimated Continuous Field Runtime: 9.5 hrs
Approximately 9.5 hours of continuous field operation at ~75% rated power on a full tank (57 gal / 215.8 L).
Estimated 75% Load Fuel Burn~6 gal/hr (22.6 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 D8 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Caterpillar D8.
Converted Equivalents:
Horsepower (HP)115 hp
Kilowatts (kW)85.8 kW
Metric Horsepower (PS / CV)116.6 PS
Direct Competitor Comparison
Compare Caterpillar D8 against same-era industry alternatives in the same horsepower class.
Current Model
Caterpillar
Caterpillar D8
Engine Power:Diesel (listed): 115 hp / 85.8 kW
★ Baseline Reference
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