Oliver OC-12 tractor specifications

1955 - 1960

Production

Production Manufacturer:Oliver
Factory:Cleveland, Ohio, USA

Oliver OC-12 Power

Oliver OC-12 Power Drawbar (claimed):40 hp
29.8 kW
Belt (claimed):51 hp
38.0 kW
Drawbar (tested):50.8 hp
37.9 kW
Belt (tested):57.9 hp
43.2 kW
power test details ...

1955 - 1960

Nebraska Tractor Test 548

Nebraska Tractor Test 548
Gasoline June 1955
Belt power (max):	57.9 hp 43.2 kW
Drawbar performance
Max power:	50.8 hp 37.9 kW

Nebraska Tractor Test 549

Nebraska Tractor Test 549
Diesel June 1955
Belt power (max):	56.6 hp 42.2 kW
Drawbar performance
Max power:	50.5 hp 37.7 kW

Oliver OC-12 Engines

Oliver OC-12 Engines Hercules 5.6L 6-cyl gasoline Hercules 4.9L 6-cyl diesel Fuel tank:35 gal
132.5 L
Engine details ...

1955 - 1960

Engines overview

Engines overview
Hercules 5.6L 6-cyl gasoline
Hercules 4.9L 6-cyl diesel

Engine Detail

Engine Detail
Hercules JXLD
gasoline
6-cylinder
liquid-cooled vertical L-head
vertical L-head
Displacement:	339 ci 5.6 L
Bore/Stroke:	4.00x4.50 inches 102 x 114 mm
Air cleaner:	Vortox
Compression:	6.25:1
Rated RPM:	1750
Starter volts:	6
Coolant capacity:	24 qts 22.7 L

Engine Detail

Engine Detail
Hercules DJXC
diesel
6-cylinder
liquid-cooled vertical I-head
Displacement:	298 ci 4.9 L
Bore/Stroke:	3.75x4.50 inches 95 x 114 mm
Compression:	15.5:1
Rated RPM:	1750
Starter volts:	12
Coolant capacity:	20 qts 18.9 L