SPECS / COMPARISON

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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

Feature	Allis Chalmers D15 Series IITractor	Oliver 77 Row-CropTractor
Tractor Type	Row-Crop Tractor	Row-Crop Tractor
Weight	2050.0 kg	2040.0 kg
Transmission Type	Shuttle	Unsynchronized gear with dry disc clutch
Length	330.0 cm	353.0 cm
Years Made	1960-1968	1948-1954
Engine Model	Allis Chalmers D-175	Waukesha-Oliver
Engine Type	4-stroke, liquid-cooled, inline	4-stroke, liquid-cooled, inline
Fuel Type	Diesel	LP-gas
Cylinders	4	6
Displacement	2867 cc	3179 cc
Bore	8.99 cm	8.41 cm
Stroke	11.10 cm	9.50 cm
Rear PTO Type	Live	—
Rear PTO Speed	540 RPM	540 RPM
Compression Ratio	15.5:1	6.75:1
Spark Plug	AC C-45Champion J-7Auto-Lite A-5	—
Battery	12 V, 70Ah, one for gas/LP-gas, two for diesel	—
Starter	Electric	Electric
Height	203.0 cm	190.0 cm
Width	170.0 cm	—
Wheelbase	mm	230.0 cm
Fuel Tank Capacity	59.6 l	62.5 l
Oil Capacity	4.7 l	7.6 l
Coolant Capacity	11.4 l	17.0 l
Transmission Oil Capacity	14.0 l	—
Hydraulic Capacity	9.5 l	—
Gears	4 forward and 4 reverse	6 forward and 2 reverse
Chassis	4×2 2WD	4×2 2WD
Max. Travel Speed	7.5 km/h	7.2 km/h
Brakes	Expanding shoe	Differential mechanical drum
Drawbar Category	II/I	—
Cabin Type	Open operator station	Open operator station
Steering Type	Manual or power	Manual
Front Tires	Ag: 5.50-16, 6.50-16	Ag: 5.50-16
Rear Tires	Ag: 12.4-26, 13.6-26, 14.9-26	Ag: 10-38, 11-38, 12-38
Working Pressure	158.6 bar	—
Valves	0 to 3	—
Ground Clearance	—	63.0 cm
Source	heavyequipments.net archive (imported 2026-10)	heavyequipments.net archive (imported 2026-10)

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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051