Cletrac HG tractor specifications

1939 - 1951

1939 - 1951 Agricultural Crawler tractor

Series:

Series:HGOC-3 ↓

1951 - 1957

Agricultural Crawler tractor

Production

Production
Manufacturer:	Oliver
Type:	Agricultural Crawler tractor
Factory:	Cleveland, Ohio, USA
The Oliver OC-3 was essentially the same as the HG it replaced.

Oliver OC-3 Power

Oliver OC-3 Power
Drawbar (claimed):	22 hp 16.4 kW
Belt (claimed):	26.5 hp 19.8 kW

Oliver OC-3 Engine

Oliver OC-3 Engine
Hercules 2.2L 4-cyl gasoline
Fuel tank:	12 gal 45.4 L
Engine details ...

Mechanical

Mechanical
Chassis:	crawler
Cab:	Open operator station.
Transmission:	3-speed gear
Transmission details ...

Dimensions & Tracks

Dimensions & Tracks
Weight:	3860 lbs 1750 kg
10-inch tracks
Full dimensions and tracks ...

Oliver OC-3 attachments

Oliver OC-3 attachments
front-end loader
Attachment details ...

OC-3 Serial Numbers

OC-3 Serial Numbers
1951:	1WH000
1952:	3WH712
1953:	3500001
1954:	4500001
1955:	11WH760
1956:	15WH306
1957:	19WH090
how to read serial numbers...

Production

Production Manufacturer:Cletrac (a part of Oliver)
Type:Agricultural Crawler tractor
Factory:Cleveland, Ohio, USA
Total built:29,930

Cletrac HG Power

Cletrac HG Power Drawbar (claimed):22 hp
16.4 kW
Belt (claimed):16 hp
11.9 kW
Drawbar (tested):21.3 hp
15.9 kW
Belt (tested):25.3 hp
18.9 kW
power test details ...

1939 - 1951

Agricultural Crawler tractor

Series:

Series:	HG
	OC-3 ↓

Nebraska Tractor Test 324

Nebraska Tractor Test 324
113 gasoline 3-speed crawler August 12, 1939 - August 30, 1938 Link: Nebraska Tractor Test 324 file
Belt power (max):	19.4 hp 14.5 kW
Belt fuel use (max):	2.2 gal/hour 8.3 l/hour
Drawbar performance
Max power:	14.01 hp 10.4 kW
Fuel use:	7.0 gal/hour 26.5 l/hour
Gear 2 used for power test.
Max pull:	2800 lbs 1270 kg
Gear 1 used for pull test.

Nebraska Tractor Test 434

Nebraska Tractor Test 434
133 gasoline 3-speed crawler November 11 - 21, 1949 Link: Nebraska Tractor Test 434 file
Belt power (max):	25.3 hp 18.9 kW
Belt fuel use (max):	2.3 gal/hour 8.7 l/hour
Drawbar performance
Max power:	21.3 hp 15.9 kW
Gear 2 used for power test.
Max pull:	3940 lbs 1787 kg
Gear 1 used for pull test.

Cletrac HG Engines

Cletrac HG Engines Hercules 2.2L 4-cyl gasoline Hercules 1.9L 4-cyl gasoline Hercules 2.0L 4-cyl gasoline Fuel tank:12 gal
45.4 L
Engine details ...

1939 - 1951

Agricultural Crawler tractor

Series:

Series:	HG
	OC-3 ↓

Engines overview

Engines overview
Hercules 2.2L 4-cyl gasoline
Hercules 1.9L 4-cyl gasoline
Hercules 2.0L 4-cyl gasoline

Engine Detail

Engine Detail
Hercules IXB3
gasoline
4-cylinder
liquid-cooled vertical L-head
Final engine, used from 1950 on.
Displacement:	133 ci 2.2 L
Bore/Stroke:	3.25x4.00 inches 83 x 102 mm
Air cleaner:	Vortox
Compression:	6.67:1
Rated RPM:	1700
Starter volts:	6
Coolant capacity:	12 qts 11.4 L (original)
	11 qts 10.4 L (late)

Engine Detail

Engine Detail
Hercules IXA3
gasoline
4-cylinder
Original engine, used from 1939 to late 1940
Displacement:	113.1 ci 1.9 L
Bore/Stroke:	3.00x4.00 inches 76 x 102 mm
Rated RPM:	1400

Engine Detail

Engine Detail
Hercules
gasoline
4-cylinder
liquid-cooled
Second engine, used from late 1940 to 1950.
Displacement:	122.3 ci 2.0 L
Bore/Stroke:	3.12x4.00 inches 79 x 102 mm
Rated RPM:	1700

Mechanical

Mechanical Chassis:crawler
Cab:Open operator station.
Transmission:3-speed gear
Transmission details ...

1939 - 1951

Agricultural Crawler tractor

Series:

Series:	HG
	OC-3 ↓

Transmission

Transmission
Type:	gear
Gears:	3 forward and 1 reverse

Speeds

Speeds

Dimensions & Tracks

Dimensions & Tracks Weight:3200 lbs
1451 kg
tracks Full dimensions and tracks ...

1939 - 1951

Agricultural Crawler tractor

Series:

Series:	HG
	OC-3 ↓

Cletrac HG Tracks

Cletrac HG Tracks
Size:	tracks

Dimensions

Dimensions
Length:	100 inches 254 cm
Height:	50 inches 127 cm
Weight:	3200 lbs 1451 kg
Gauge:	31 inches 78 cm
Gauge:	42 inches 106 cm
Gauge:	68 inches 172 cm

HG Serial Numbers

HG Serial Numbers 1939:1GA000
1940:2GA884
1941:5GA024
1942:7GA484
1943:8GA702
1944:9GA630
1945:13GA490
1946:19GA994
1947:25GA240
1948:33GA146
1949:41GA896
1950:48GA428
1951:55GA430

how to read serial numbers...