Oliver OC-4

The Oliver OC-4 is a tractor produced by Oliver. It is equipped with a 130 ci 2.1 L engine. The listed engine power is Diesel (listed): 30.45 hp / 22.7 kW; Gasoline (listed): 30.20 hp / 22.5 kW. Transmission: 4 forward and 1 reverse. Drive type: crawler. Operating weight: 4720 to 5000 pounds.

Overview

	1957 - 1965 Agricultural Crawler tractor

Production
Manufacturer	Oliver
Agricultural Crawler tractor
Built in Cleveland, Ohio, USA

Variants
OC-4	crawler
OC-46	loader-crawler
Alfta	flex-track

Oliver OC-4 Transmission
4-speed gear
Transmission details ...

Oliver OC-4 Power
Engine	30.45 hp 22.7 kW
Gas Drawbar (claimed)	24.05 hp 17.9 kW
Diesel Drawbar (claimed)	24.75 hp 18.5 kW
Gas Belt (claimed)	26.47 hp 19.7 kW
Diesel Belt (claimed)	27.31 hp 20.4 kW
Drawbar (tested)	24.15 hp 18.0 kW
Belt (tested)	26.08 hp 19.4 kW
Performance test details ...

Mechanical
Drive	crawler

Power Take-off (PTO)
Rear PTO Type	540 (1.375)

Dimensions & Tracks
Weight	4720 to 5000 pounds
10-inch tracks
Full dimensions and tracks ...

References
Model OC-4 42" Crawler Tractor published in 1963, by Oliver
OC-4 Crawler - OC-46 Loader Series B published in 1963, by Oliver

Engine

Engine options
Hercules 2.1L 3-cyl diesel
Herclues 2.1L 3-cyl gasoline

Engine Detail — 130 ci / 2.1 L Diesel

Manufacturer	Hercules DD130
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled vertical I-head
Displacement	130 ci 2.1 L
Bore/Stroke	3.50x4.50 inches 89 x 114 mm
Power	30.45 hp 22.7 kW
Air cleaner	oil bath
Compression	14.5:1
Rated RPM	1700
Torque	96 lb-ft 130.2 Nm
Torque RPM	1200
Starter volts	12
Oil capacity	5.75 qts 5.4 L
Coolant capacity	12 qts 11.4 L

Engine Detail — 130 ci / 2.1 L Gasoline

Manufacturer	Herclues GTO130
Fuel Type	Gasoline
Configuration	3-cylinder, liquid-cooled vertical I-head
Displacement	130 ci 2.1 L
Bore/Stroke	3.50x4.50 inches 89 x 114 mm
Power	30.20 hp 22.5 kW
Air cleaner	oil bath
Compression	6.5:1
Rated RPM	1700
Torque	97 lb-ft 131.5 Nm
Torque RPM	1400
Starter volts	6
Oil capacity	5.75 qts 5.4 L

Transmission

Transmission — 4 forward and 1 reverse gear

Type	gear
Gears	4 forward and 1 reverse
Clutch	dry disc

Dimensions

Oliver OC-4 Tracks
Width	10 inches 25 cm
Length on ground	56.125 inches 142 cm
Area on ground	1122 in² 0.7 m²
Width	12 inches 30 cm
Length on ground	56.125 inches 142 cm
Area on ground	1347 in² 0.9 m²

Dimensions
Length	111 inches*Length with dozer blade 281 cm
Width	60 inches 152 cm
Gauge	46 inches 116 cm
Gauge	31 inches 78 cm
Gauge	60 inches 152 cm
Gauge	68 inches 172 cm

Oliver OC-4 Weight
Gas Shipping	4720 lbs 2140 kg
Diesel Shipping	4750 lbs 2154 kg
Gas Operating	4970 lbs 2254 kg
Diesel Operating	5000 lbs 2268 kg

Tests

Tractor Tests
NTTL 655: diesel 4-speed crawler
NTTL 656: gasoline 4-speed crawler

Nebraska Tractor Test 655
Diesel 4-speed crawler June 5 - 16, 1958 Link: Nebraska Tractor Test 655 file
Belt power (max)	26.08 hp 19.4 kW
Belt fuel use (max)	2.3 gal/hour 8.7 l/hour
Drawbar performance
Max power	24.15 hp 18.0 kW
Gear 2 used for power test.
Max pull	5124 lbs 2324 kg
Gear 1 used for pull test.

Nebraska Tractor Test 656
Gasoline 4-speed crawler June 5 - 16, 1958 Link: Nebraska Tractor Test 656 file
Belt power (max)	25.34 hp 18.9 kW
Belt fuel use (max)	2.5 gal/hour 9.5 l/hour
Drawbar performance
Max power	23.14 hp 17.3 kW
Gear 2 used for power test.
Max pull	4986 lbs 2261 kg
Gear 1 used for pull test.

Photos

Oliver OC-4