Challenger 75
The Challenger 75 is a tractor produced by Challenger. It is equipped with a 629 ci 10.3 L engine. The listed engine power is Diesel (listed): 325 hp / 242.4 kW. Transmission: 10 forward and 2 reverse. Drive type: crawler. Operating weight: 34,370 lbs 15590 kg.
Engine Power
Diesel (listed): 325 hp / 242.4 kW
Drive & Traction
crawler
Fuel & Capacities
220 gal
832.7 L
Transmission
10 forward and 2 reverse
Operating Weight
34,370 lbs
15590 kg
Overview
 | 1991 - 1992
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | Challenger (a part of Caterpillar) |
Agricultural Crawler tractor | |
Challenger 75 Engine | |
|---|---|
Caterpillar 10.3L 6-cyl diesel | |
Fuel tank | 220 gal
832.7 L |
Engine details ...  | |
Challenger 75 Transmission | |
|---|---|
10-speed full power shift | |
Transmission details ...  |
Challenger 75 Power | |
|---|---|
Engine | 325 hp
242.4 kW |
Drawbar (claimed) | 260 hp
193.9 kW |
PTO (claimed) | 281 hp
209.5 kW |
Drawbar (tested) | 251.01 hp
187.2 kW |
PTO (tested) | 301.85 hp
225.1 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Steering | hydrostatic differential steering |
Hydraulic caliper disc brakes | |
Cab standard | |
Hydraulics | |
|---|---|
Type | closed |
Valves | 4 |
Pump flow | 26 gpm
98.4 lpm |
Tractor hitch | |
|---|---|
Rear Type | III,IV |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 1000 |
Dimensions & Tracks | |
|---|---|
Wheelbase | 106 inches
269 cm |
Weight | 34,370 lbs
15590 kg |
27.5-inch tracks | |
Full dimensions and tracks ...  | |
References | |
|---|---|
 | |
Challenger 75 published in 1991, by Caterpillar |
Engine
Engine Detail — 629 ci / 10.3 L Diesel
Manufacturer | Caterpillar |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 629 ci
10.3 L |
Bore/Stroke | 4.92x5.5 inches
125 x 140 mm |
Power | 325 hp
242.4 kW |
Compression | 16:1 |
Rated RPM | 2100 |
Starter volts | 12 |
Coolant capacity | 44 qts
41.6 L |
Transmission
Transmission — 10 forward and 2 reverse full power shift
Type | full power shift |
Gears | 10 forward and 2 reverse |
 | |
Dimensions
Challenger 75 Tracks | |
|---|---|
Width | 27.5 inches
69 cm |
Length on ground | 107 inches
271 cm |
Area on ground | 5898 in²
3.8 m² |
Ground pressure | 5.4 psi
0.4 bar |
Width | 24.5 inches
62 cm |
Width | 35.5 inches
90 cm |
Dimensions | |
|---|---|
Wheelbase | 106 inches
269 cm |
Operating weight | 34,370 lbs
15590 kg |
Tests
OCED Tractor Test 1654 | |
|---|---|
Diesel 10-speed crawler
October 4 - 11, 1991
Link: OCED Tractor Test 1654 file | |
PTO performance | |
Max power | 301.85 hp
225.1 kW |
Fuel use | 16.2 gal/hour
61.3 l/hour |
Power at rated engine speed | 281.36 hp
209.8 kW |
Fuel use | 15.6 gal/hour
59.0 l/hour |
Power at rated PTO speed | 285.55 hp
212.9 kW |
Fuel use | 15.7 gal/hour
59.4 l/hour |
Drawbar performance | |
Max power | 251.01 hp
187.2 kW |
Fuel use | 15.7 gal/hour
59.4 l/hour |
Gear 3 used for power test. | |
Max pull | 34,309 lbs
15562 kg |
Gear 1 used for pull test. | |
Photos
Challenger 75 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Challenger 75 based on its 325 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
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 | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
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 Challenger 75.
Estimated Continuous Field Runtime: 13 hrs
Approximately 13 hours of continuous field operation at ~75% rated power on a full tank (220 gal / 832.8 L).
Estimated 75% Load Fuel Burn~16.9 gal/hr (64 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
Challenger 75 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Challenger 75.
Converted Equivalents:
Horsepower (HP)325 hp
Kilowatts (kW)242.4 kW
Metric Horsepower (PS / CV)329.5 PS
Direct Competitor Comparison
Compare Challenger 75 against same-era industry alternatives in the same horsepower class.
Current Model
Challenger
Challenger 75
Engine Power:Diesel (listed): 325 hp / 242.4 kW
★ Baseline Reference
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