Acremaster 404A
The Acremaster 404A is a tractor produced by Acremaster. It is equipped with a 1276 ci 20.9 L engine. The listed engine power is Diesel (listed): 515 hp / 384.0 kW. Transmission: 12 forward and 3 reverse. Operating weight: 46297 lbs 21000 kg.
Engine Power
Diesel (listed): 515 hp / 384.0 kW
Fuel & Capacities
475.5 gal
1799.8 L
Transmission
12 forward and 3 reverse
Operating Weight
46297 lbs
21000 kg
Overview
 | 1982 - 1984
400 SeriesFour-wheel Drive (4WD) tractor
400 Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | Acremaster |
Four-wheel Drive (4WD) tractor | |
Built in Merredin, Australia | |
Acremaster 404A Engine | |
|---|---|
Mercedes-Benz 20.9L 12-cyl diesel | |
Fuel tank | 475.5 gal
1799.8 L |
Engine details ...  | |
Acremaster 404A Transmission | |
|---|---|
12-speed power shift | |
Transmission details ...  |
Acremaster 404A Power | |
|---|---|
Engine | 515 hp
384.0 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Articulated power steering | |
Cab standard with air-conditioning. |
Dimensions & Tires | |
|---|---|
Weight | 46297 lbs
21000 kg |
Front tire | 30.5x32 |
Rear tire | 30.5x32 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 1276 ci / 20.9 L Diesel
Manufacturer | Mercedes-Benz OM404A |
Configuration | turbocharged diesel, 12-cylinder, liquid-cooled V12 |
Displacement | 1276 ci
20.9 L |
Bore/Stroke | 4.92x5.59 inches
125 x 142 mm |
Power | 515 hp
384.0 kW |
Rated RPM | 2200 |
Starter type | electric |
Transmission
Transmission — 12 forward and 3 reverse power shift
Type | power shift |
Gears | 12 forward and 3 reverse |
Dimensions
Acremaster 404A Tires | |
|---|---|
Ag front | 30.5x32 |
Ag rear | 30.5x32 |
Dimensions | |
|---|---|
Length | 288.2 inches
732 cm |
Width | 196.1 inches
498 cm |
Height (exhaust) | 155.5 inches
394 cm |
Weight | 46297 lbs
21000 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Acremaster 404A based on its 515 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 Acremaster 404A.
Estimated Continuous Field Runtime: 17.8 hrs
Approximately 17.8 hours of continuous field operation at ~75% rated power on a full tank (475.5 gal / 1800 L).
Estimated 75% Load Fuel Burn~26.8 gal/hr (101.4 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
Acremaster 404A Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Acremaster 404A.
Converted Equivalents:
Horsepower (HP)515 hp
Kilowatts (kW)384 kW
Metric Horsepower (PS / CV)522.1 PS
Direct Competitor Comparison
Compare Acremaster 404A against same-era industry alternatives in the same horsepower class.
Current Model
Acremaster
Acremaster 404A
Engine Power:Diesel (listed): 515 hp / 384.0 kW
★ Baseline Reference
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