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Allis Chalmers industrial tractors

Allis Chalmers IB

The Allis Chalmers IB is an industrial tractor produced from 1939 to 1958. Based on the B farm tractor, the IB featured a heavier frame, front axle, and foot throttle. It was powered by either a 1.9L or 2.1L 4-cylinder gasoline engine and had a 3-speed non-synchronized transmission. The tractor had two-wheel drive with manual steering and differential mechanical contracting band brakes. It featured an open operator station and a generator charging system with a 6-volt battery. A total of 2,850 units were built.
Power-
Founded-
ModelIB
Allis Chalmers IB tractor
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Technical Specifications

Detailed specifications and technical data for Allis Chalmers IB

Power
Belt (claimed)22.87 hp (17.1 kW)
Engine
Point gap0.020 inches (0.508 mm)
Rated RPM1500
Air cleaneroil bath
Bore/Stroke3.375x3.50 inches (86 x 89 mm)
Compression5.75:1
Displacement125.2 ci (2.1 L)
Firing order1-2-4-3
Oil capacity4 qts (3.8 L)
Sparkplug gap0.035 inches (0.889 mm)
Starter volts6
Engine optionsAllis-Chalmers 2.1L 4-cyl gasoline, Allis-Chalmers 1.9L 4-cyl gasoline
Point gap 2nd engine0.020 inches (0.508 mm)
Rated RPM 2nd engine1400
Bore/Stroke 2nd engine3.25x3.50 inches (83 x 89 mm)
Intake valve clearance0.010 inches (hot) (0.254 mm)
Displacement 2nd engine116.1 ci (1.9 L)
Exhaust valve clearance0.010 inches (hot) (0.254 mm)
Firing order 2nd engine1-2-4-3
Sparkplug gap 2nd engine0.030 inches (0.762 mm)
Coolant capacity 2nd engine8 qts (7.6 L)
Intake valve clearance 2nd engine0.010 inches (hot) (0.254 mm)
Exhaust valve clearance 2nd engine0.010 inches (hot) (0.254 mm)
Variants
Bfarm tractor
Electrical
Battery volts6
Charging systemgenerator
Mechanical
DriveTwo-wheel drive
BrakesDifferential mechanical contracting band brakes
Steeringmanual
Operator stationOpen operator station
Production
NotesAllis-Chalmers model IB tractors built prior to 1946 shared serial numbers with the B farm tractors. Based on the B, the Allis IB industrial tractor featured a heavier frame, front axle, and foot throttle.
Total built2,850
ManufacturerAllis Chalmers
Transmission
Typenon-synchronized gear
Gears3 forward and 1 reverse
Clutchdry
Oil typeSAE140 above 32°F (0°C), SAE90 below 32°F (0°C)
Oil capacity6 qts (5.7 L)
Serial Numbers
193897
193911800
194033502
194149721
194256782
194364501
194465502
194570210
1946IB1001
1947IB1003
1948IB1010
1949IB1282
1950IB1556
1951IB1879
1952IB2219
1953IB2570
LocationSerial number stamped behind the gear shift lever, on top of the transmission case.

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