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Allis Chalmers 6040 vs Allis Chalmers 6140
Verdict: Allis Chalmers 6040 vs Allis Chalmers 6140
The Allis Chalmers 6040 and the Allis Chalmers 6140 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 40 hp. Allis Chalmers 6140 is the lighter machine (4,000 kg vs 4,250 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 1974). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Allis Chalmers
62
Fit score
Best match
Clear
Allis Chalmers
62
Fit score
Best match
Clear
Rated power
40 hp
40 hp
Confidence
40%
40%
Guide price
—
—
Overview
Distributor
Allis ChalmersReference
—
Manufacturer
RenaultReference
Allis ChalmersReference
With 13.6-28 rear tires.Reference
liquid-cooledReference
Total built
499Reference
—
Original price
$6,934Reference
$15,891Reference
Differential lock
mechanical rearReference
mechanical rearReference
Final drives
—
inboard planetaryReference
Engine
Drawbar (claimed)
27.4 kWReference
—
Drawbar (tested)
27.4 kWReference
—
Displacement
2.5 LReference
2.3 LReference
Bore/Stroke
91 x 127 mmReference
98 x 103 mmReference
Air cleaner
paper elementReference
dryReference
Compression
18.5:1Reference
23:1Reference
Rated RPM
2250Reference
2500Reference
Idle RPM
725-2475Reference
—
Starter
electricReference
—
Starter volts
12Reference
12Reference
Coolant capacity
7.6 LReference
8.0 LReference
Oil capacity
27.4 LReference
—
Oil change
75 hReference
—
Power at rated engine speed
30.1 kWReference
—
Max power
27.4 kWReference
—
Fuel tank
—
50.0 LReference
Pre-heating
—
glow plugsReference
Transmission
Gears
10 forward and 2 reverseReference
10 forward and 2 reverseReference
PTO & Hydraulics
PTO (claimed)
30.1 kWReference
29.8 kWReference
PTO (tested)
30.1 kWReference
—
Hydraulic system
27.4 LReference
—
Type
partial synchronizedReference
synchromeshReference
Capacity
27.4 LReference
—
Pressure
158.6 barReference
—
Pump flow
25.4 lpmReference
37.9 lpmReference
Total flow
50.0 lpmReference
—
Steering flow
28.4 lpmReference
—
Steering press.
75.8 barReference
—
Rear Type
IIReference
IReference
Control
lower-link draft sensingReference
top-link draft sensingReference
Rear PTO
liveReference
independentReference
Clutch
254mm dry discReference
279.4mm dry discReference
Rear PTO Type
540 (1.375)Reference
540 (1.375)Reference
Engine RPM
540@2160Reference
—
Power at rated PTO speed
29.7 kWReference
—
Rear lift
—
1446 kgReference
Capacities
Fuel
45.4 LReference
—
Dimensions
Wheelbase
200 cmReference
193 cmReference
Weight
4250 to 4680 poundsReference
4000 to 4400 poundsReference
Front tire
6.00-16Reference
6.00-16Reference
Rear tire
14.9-28Reference
13.6-28Reference
Ag front
6.00-16Reference
8.00-18Reference
Ag rear
14.9-28Reference
14.9-28Reference
Length
325 cmReference
334 cmReference
Width
165 cmReference
173 cmReference
Clearance (front axle)
40 cmReference
—
Clearance (rear axle)
53 cmReference
—
Front tread
121 to 190 cmReference
126 to 198 cmReference
Rear tread
127 to 198 cmReference
137 to 213 cmReference
Shipping
1927 kgReference
—
Operating
2122 kgReference
—
Ballasted
2753 kgReference
—
Steering wheel
157 cmReference
159 cmReference
2WD Shipping weight
—
1814 kgReference
4WD Shipping weight
—
1995 kgReference
6040 Serial Numbers
Location:
Serial number plate on the right-front of the fuel tank, under the hood.Reference
Serial number on the left side of the fuel tank.Reference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
—
Battery volts
12Reference
12Reference
Allis Chalmers 6040 Height
Hood
136 cmReference
128 cmReference
Exhaust
213 cmReference
223 cmReference
Test results
Fuel use
10.6 l/hourReference
—
Max pull
2072 kgReference
—
Speeds
Allis Chalmers 6140 attachments
6140 Serial Numbers
1982
—
1001Reference
1983
—
1726Reference
1984
—
1851Reference
1985
—
2711Reference
Allis Chalmers 6140 Height
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.