McCormick-Deering O-4 tractor specifications

1940 - 1953

1940 - 1953 Orchard/Vineyard tractor

Production

Production Manufacturer:McCormick-Deering
Type:Orchard/Vineyard tractor
Factory:Rock Island, Illinois, USA
Total built:2,721

Variants

Variants W-4:standard
O-4:orchard
OS-4:orchard, without full sheet metal

1939 - 1952

Standard-tread tractor

Series:

W-4

→ W-6

Production

Production
Manufacturer:	McCormick-Deering (a part of International Harvester)
Type:	Standard-tread tractor
Factory:	Rock Island, Illinois, USA
Total built:	24,377
Original price:	$1,900
The W-4 is the "regular" or standard-tread version of the Farmall H.

Variants

Variants
H:	row-crop
I-4:	industrial
O-4:	orchard

McCormick-Deering W-4 Power

McCormick-Deering W-4 Power
Drawbar (claimed):	22.5 hp 16.8 kW
Belt (claimed):	24.9 hp 18.6 kW
Drawbar (tested):	23.97 hp 17.9 kW
Belt (tested):	26.21 hp 19.5 kW
power test details ...

McCormick-Deering W-4 Engines

McCormick-Deering W-4 Engines
International Harvester 2.5L 4-cyl distillate
International Harvester 2.5L 4-cyl gasoline
Fuel tank:	17.5 gal 66.2 L
Aux. fuel:	0.875 gal 3.3 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
Brakes:	differential mechanical external contracting band
Cab:	Open operator station.
Transmission:	5-speed sliding gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	transmission
Rear RPM:	540

Dimensions & Tires

Dimensions & Tires
Wheelbase:	66.75 inches 169 cm
Weight:	3050 lbs 1383 kg
Front tire:	5.50-16
Rear tire:	12-26
Full dimensions and tires ...

W-4 Serial Numbers

W-4 Serial Numbers
Location:	Left side of tractor, on clutch housing.
photo of W-4 serial number
1940:	WBH501
1941:	WBH943
1942:	WBH4056
1943:	WBH5693
1944:	WBH7593
1945:	WBH11171
1946:	WBH13934
1947:	WBH16022
1948:	WBH18880
1949:	WBH21912
1950:	WBH24470
1951:	WBH28167
1952:	WBH31214
1953:	WBH33067
how to read serial numbers...

Belt Pulley

Belt Pulley
Diameter:	9.75 inches 24 cm
Width:	7.50 inches 19 cm
RPM:	1019
Speed:	2601 ft/min 792.78 meters/min

Electrical

Electrical
Ground:	positive
Charging system:	generator
Charging amps:	11
Battery volts:	6

McCormick-Deering O-4 Power

McCormick-Deering O-4 Power Belt (claimed):24 hp
17.9 kW (kerosene)
27.5 hp
20.5 kW (gasoline)

McCormick-Deering O-4 Engine

McCormick-Deering O-4 Engine International Harvester 2.5L 4-cyl gasoline Engine details ...

1940 - 1953

Orchard/Vineyard tractor

Engine Detail

Engine Detail
International Harvester
gasoline
4-cylinder
liquid-cooled
Displacement:	152 ci 2.5 L
Bore/Stroke:	3.375x4.45 inches 86 x 113 mm
Compression:	5.9:1 (high-compression gasoline)
	4.75:1 (gasoline-distillate)
	4.5:1 (kerosene)
Rated RPM:	1650
Oil capacity:	6 qts 5.7 L

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Cab:Open operator station
Transmission:5-speed gear
Transmission details ...

1940 - 1953

Orchard/Vineyard tractor

Transmission

Transmission
Type:	gear
Gears:	5 forward and 1 reverse

Speeds

Speeds

Dimensions & Tires

Dimensions & Tires Weight:4320 lbs
1959 kg
Full dimensions and tires ...

1940 - 1953

Orchard/Vineyard tractor

McCormick-Deering O-4 Tires

Dimensions

Dimensions
Length:	120.9 inches 307 cm
Width:	60.25 inches 153 cm
Height:	60.25 inches 153 cm
Weight:	4320 lbs 1959 kg

O-4 Serial Numbers

O-4 Serial Numbers Location:Left side of tractor, on clutch housing.
1940:OBH501
1941:OBH943
1942:OBH4056
1943:OBH5693
1944:OBH7593
1945:OBH11171
1946:OBH13934
1947:OBH16022
1948:OBH18880
1949:OBH21912
1950:OBH24470
1951:OBH28167
1952:OBH31214
1953:OBH33067

how to read serial numbers...