I&T Shop Manual for the
Allis Chalmers B

Allis Chalmers B
General tractor information:
	Manufacturer:	Allis Chalmers
	Model:	B
	Type:	Farm/Agricultural tractor
	Years produced:	1938 - 1957
	Total built:	120,783
	Factory:	West Allis, Wisconsin, USA Southampton, England
	Original price:	$1500 (1957)
Tractor power:
	Drawbar (rated):	10, hp [7.5 kW] 15 later
	Drawbar (max):	19.5 hp [14.5 kW]
	Belt:	14, hp [10.4 kW] 19 later
	Plows:	1 (16-inch)
Engine:
	Manufacturer:	Allis-Chalmers
	Fuel:	gasoline
	Cylinders:	4
	Bore/Stroke:	3.375x3.50 inches [86 x 89 mm]
	Displacement:	125.2 ci [2.1 L]
	Compression:	5.75:1
	Rated RPMs:	-unknown-
	Cooling:	liquid
	Torque:	-unknown-
	Firing order:	1-2-4-3
	Oil capacity:	4 qts [3.8 L]
	Sparkplug gap:	0.035
	Point gap:	0.020
	Comments:	Final engine, used from 1943 on, SN 64501
Engine:
	Manufacturer:	Allis-Chalmers
	Fuel:	gasoline
	Type:	vertical I-head
	Cylinders:	4
	Bore/Stroke:	3.25x3.50 inches [83 x 89 mm]
	Displacement:	116.1 ci [1.9 L]
	Compression:	-unknown-
	Rated RPMs:	1400
	Cooling:	-unknown-
	Torque:	-unknown-
	Firing order:	-unknown-
	Comments:	Second engine, used until 1943, SN 64500
Engine:
	Manufacturer:	Waukesha
	Fuel:	gasoline
	Cylinders:	4
	Bore/Stroke:	3.00x4.00 inches [76 x 102 mm]
	Displacement:	113 ci [1.9 L]
	Compression:	-unknown-
	Rated RPMs:	1400
	Cooling:	-unknown-
	Torque:	-unknown-
	Firing order:	-unknown-
	Comments:	Original engine, used in 1937 on the first 96 tractors built
Transmission:
	Type:	sliding gear
	Forward:	3
	Reverse:	1
Mechanical:
	Chassis:	4x2 2WD
	Steering:	-unknown-
	Brakes:	-unknown-
Capacity:
	Fuel:	13 gal [49 L]
	Coolant:	8 qts [7.6 L]
Power Take-off (PTO):
	Rear PTO:	transmission
	Rear speed (RPM):	560
Tires:
	Ag front:	4.00-15
	Ag rear:	10-24
Dimensions:
	Weight:	2,060 lbs [934 kg]
	Wheelbase:	74 inches [187 cm]
	Length:	110 inches [279 cm]
	Width:	-unknown-
	Height:	63 inches [160 cm]
	Ground clearance:	-unknown-
Electrical:
	Volts:	6
Nebraska Tractor Test 302:
	Test Date:	May 1938
	Engine:	116 ci gas
	Belt (max):	15.68 hp [11.7 kW]
	Drawbar (max):	12.97 hp [9.7 kW]
Nebraska Tractor Test 439:
	Test Date:	May 1950
	Engine:	125 ci gas
	Belt (max):	22.3 hp [16.6 kW]
	Drawbar (max):	19.5 hp [14.5 kW]
B Serial Numbers:
Location: On top of transmission case, behind shift lever. English-built models have an 'EB' serial number.
1938: 97
1939: 11800
1940: 33502
1941: 49721
1942: 56782
1943: 64501
1944: 65502
1945: 70210
1946: 72265
1947: 73370
1948: 80556
1949: 92295
1950: 102393
1951: 114527
1952: 118674
1953: 122310
1954: 124201
1955: 124711
1956: 126497
1957: 127186
1946: 1001 (IB)
1947: 1003 (IB)
1948: 1010 (IB)
1949: 1282 (IB)
1950: 1556 (IB)
1951: 1879 (IB)
1952: 2219 (IB)
1953: 2570 (IB)
Allis Chalmers B links:
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Last updated on April 25, 2008