Compare/Allis Chalmers 6140 vs Allis Chalmers WD45

Allis Chalmers 6140 vs Allis Chalmers WD45

Verdict: Allis Chalmers 6140 vs Allis Chalmers WD45

The Allis Chalmers 6140 and the Allis Chalmers WD45 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 40 hp. Allis Chalmers WD45 is the lighter machine (3,995 kg vs 4,000 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 6140 is the newer design (1982 vs 1953). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

40 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

liquid-cooledReference

with 12x28 rear tires.Reference

Original price

$15,891Reference

—

Final drives

inboard planetaryReference

—

Differential lock

mechanical rearReference

—

Total built

—

6,509 (diesel)Reference

Steering

—

powerReference

Engine

Fuel tank

50.0 LReference

—

Displacement

2.3 LReference

3.8 LReference

Bore/Stroke

98 x 103 mmReference

87 x 105 mmReference

Air cleaner

dryReference

oil bathReference

Pre-heating

glow plugsReference

—

Compression

23:1Reference

15.5:1Reference

Rated RPM

2500Reference

1625Reference

Starter volts

12Reference

Coolant capacity

8.0 LReference

16.1 LReference

Plows

—

4Reference

Drawbar (tested)

—

29.5 kWReference

Belt (tested)

—

32.9 kWReference

Torque

—

351.2 NmReference

Torque RPM

—

1169Reference

Firing order

—

1-5-3-6-2-4Reference

Sparkplug gap

—

0.762 mmReference

Point gap

—

0.508 mmReference

Intake valve clearance

—

0.254 mmReference

Exhaust valve clearance

—

0.483 mmReference

Oil capacity

—

16.1 LReference

Belt power (max)

—

32.3 kWReference

Max power

—

29.5 kWReference

Transmission

Gears

10 forward and 2 reverseReference

4 forward and 1 reverseReference

Clutch

279.4mm dry discReference

178mm wet discReference

PTO & Hydraulics

PTO (claimed)

29.8 kWReference

—

Type

synchromeshReference

sliding gearReference

Pump flow

37.9 lpmReference

—

Rear Type

IReference

—

Control

top-link draft sensingReference

—

Rear lift

1446 kgReference

—

Rear PTO

independentReference

liveReference

Rear PTO Type

540 (1.375)Reference

Hydraulic system

—

5.7 LReference

Capacity

—

5.7 LReference

Oil type

—

SAE 80EPReference

45oF [7oC]↑

—

: SAE20WReference

45oF [7oC]↓

—

: SAE10WReference

Engine RPM

—

548@1400Reference

Dimensions

Wheelbase

193 cmReference

223 cmReference

Weight

4000 to 4400 poundsReference

3995 to 4285 poundsReference

Front tire

6.00-16Reference

5.50-16Reference

Rear tire

13.6-28Reference

12-28Reference

Ag front

8.00-18Reference

5.50-16Reference

Ag rear

14.9-28Reference

13-28Reference

Length

334 cmReference

325 cmReference

Width

173 cmReference

16 cmReference

2WD Shipping weight

1814 kgReference

—

4WD Shipping weight

1995 kgReference

—

Front tread

126 to 198 cmReference

—

Rear tread

137 to 213 cmReference

141 to 228 cmReference

Steering wheel

159 cmReference

—

Height (steering wheel)

—

172 cmReference

Height (exhaust)

—

207 cmReference

Gas Weight

—

1812 kgReference

Diesel Weight

—

1943 kgReference

Ground clearance

—

73 cmReference

Allis Chalmers 6140 attachments

6140 Serial Numbers

1982

1001Reference

—

1983

1726Reference

—

1984

1851Reference

—

1985

2711Reference

—

Location:

Serial number on the left side of the fuel tank.Reference

left brake housingReference

Electrical

Ground

negativeReference

positiveReference

Battery volts

12Reference

6Reference

Gas Batteries

—

1Reference

Diesel Batteries

—

2Reference

Battery AH

—

115Reference

Allis Chalmers 6140 Height

Hood

128 cmReference

—

Exhaust

223 cmReference

—

Capacities

Fuel

—

56.8 LReference

Diameter

—

22 cmReference

RPM

—

1458Reference

WD45 Serial Numbers

1953

—

146607Reference

1954

—

160386Reference

1955

—

190993Reference

1956

—

217992Reference

1957

—

230295Reference

Test results

Belt fuel use (max)

—

11.7 l/hourReference

Max pull

—

2679 kgReference

Speeds

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.