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Allis Chalmers 840

Allis Chalmers 840 tractor
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The Allis Chalmers 840 is a wheel loader manufactured from 1970 to 1974 in Deerfield, Illinois, USA. It is powered by a Perkins 4.1L 4-cylinder diesel engine producing 83 hp gross. The tractor features a 3-speed power shift transmission, four-wheel drive with planetary final drives, and articulated power steering. It has a fuel capacity of 34 gallons and a hydraulic system capacity of 30 gallons with an open center type hydraulic system. The loader attachment offers a breakout force of 13,300 lbs and various bucket widths. Dimensions include a 96-inch wheelbase, 208.75-inch length, and an operating weight of 14,650 lbs.
Allis Chalmers 840wheel loaderPerkins 4.1L diesel engine83 hppower shift transmissionloader attachmentshydraulic systemdimensions
Power-
Founded-
Model840

Technical Specifications

Detailed specifications and technical data for Allis Chalmers 840

Power

Engine (gross):83 hp (61.9 kW)

Engine

Type:diesel
Model:Perkins 4.1L 4-cyl diesel
Torque:200 lb-ft (271.2 Nm)
Cooling:liquid-cooled inline
Starter:electric
Idle RPM:700-2700
Cylinders:4-cylinder
Rated RPM:2500
Torque RPM:1400
Bore/Stroke:3.975x5.00 inches (101 x 127 mm)
Compression:16:1
Displacement:248 ci (4.1 L)
Oil capacity:7 qts (6.6 L)
Power (gross):83 hp (61.9 kW)
Starter volts:12
Coolant capacity:20 qts (18.9 L)

Capacity

Fuel:34 gal (128.7 L)
Hydraulic system:30 gal (113.6 L)

Dimensions

Length:208.75 inches (530 cm)
Wheelbase:96 inches (243 cm)
Rear tread:67 inches (170 cm)
Front tread:67 inches (170 cm)
Height (exhaust):99 inches (251 cm)
Operating weight:14650 lbs (6645 kg)
Height (steering wheel):94.5 inches (240 cm)

Electrical

Ground:negative
Battery AH:95
Battery volts:12
Charging amps:55
Charging system:alternator

Hydraulics

Type:open center
Capacity:30 gal (113.6 L)
Pressure:2250 psi (155.1 bar)
Pump flow:30 gpm (113.6 lpm)
Steering flow:12.2 gpm (46.2 lpm)
Steering press.:1500 psi (103.4 bar)

Mechanical

Drive:Four-wheel drive
Steering:Articulated power steering
Final drives:planetary

Production

Built in:Deerfield, Illinois, USA
Years made:1970 - 1974

Attachments

Type:front-end loader
Dump time:2.0s
Dump angle:50°
Lower time:5.0s
Raise time:6.5s
Bucket widths:86 inches (218 cm), 88 inches (223 cm), 90 inches (228 cm)
Reach (dumped):39.1 inches (99 cm)
Height (at pin):137 inches (347 cm)
Clearance (dumped):112 inches (284 cm)
Loader breakout force:13300 lbs (6032 kg)
Rollback (ground line):44°

Transmission

Type:power shift
Gears:3 forward and reverse
Oil capacity:20 qts (18.9 L)