Allis Chalmers industrial tractors

Allis Chalmers 640

The Allis Chalmers 640 is a wheel loader produced from 1980 to 1983. It features a Perkins 3.3L 4-cylinder diesel engine delivering 63 hp gross and 57 hp net. The hydrostatic transmission offers infinite forward and reverse speeds with two ranges. The loader has four-wheel drive, articulated power steering, and a four-post ROPS/FOPS with an optional cab and heater. It has a wheelbase of 65 inches, operating weight of 8130 lbs, and uses industrial tires sized 12.00-16.5 and 10.00-16.5. The hydraulic system is open center with 22 gallons capacity and 2250 psi pressure. The front-end loader attachment has a breakout force of 7000 lbs, 45° dump angle, and a bucket width of 68 inches.

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Model640

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Technical Specifications

Detailed specifications and technical data for Allis Chalmers 640

Power

Engine (net)	57 hp (42.5 kW)
Engine (gross)	63 hp (47.0 kW)

Tires

Industrial rear	12.00-16.5, 10.00-16.5, 31x15.5-15
Industrial front	12.00-16.5, 10.00-16.5, 31x15.5-15

Engine

Type	diesel, 4-cylinder, liquid-cooled inline
Model	Perkins D4.203
Torque	164 lb-ft (222.4 Nm)
Starter	electric
Rated RPM	2300
Torque RPM	1250
Bore/Stroke	3.60x5.00 inches (91 x 127 mm)
Compression	17.5:1
Power (net)	57 hp (42.5 kW)
Displacement	203.5 ci (3.3 L)
Oil capacity	5 qts (4.7 L)
Power (gross)	63 hp (47.0 kW)
Starter volts	12
Coolant capacity	20 qts (18.9 L)

Capacity

Fuel	22.75 gal (86.1 L)
Hydraulic system	22 gal (83.3 L)

Dimensions

Length	177 inches (449 cm)
Wheelbase	65 inches (165 cm)
Rear tread	56 inches (142 cm)
Front tread	56 inches (142 cm)
Height (ROPS)	95.9 inches (243 cm)
Ground clearance	12.4 inches (31 cm)
Operating weight	8130 lbs (3687 kg)

Electrical

Ground	negative
Battery AH	95
Battery volts	12
Charging amps	42
Charging system	alternator

Hydraulics

Type	open center
Capacity	22 gal (83.3 L)
Pressure	2250 psi (155.1 bar)
Pump flow	25 gpm (94.6 lpm)
Steering flow	9 gpm (34.1 lpm)
Steering press.	1500 psi (103.4 bar)

Mechanical

Drive	Four-wheel drive
Steering	Articulated power steering
ROPS/FOPS	Four-post ROPS/FOPS. Cab optional with heater.

Production

Type	Wheel Loader
Years produced	1980 - 1983

Attachments

Loader	front-end loader
Boom rod	2.0 inches (5 cm)
Dump time	2.0s
Bucket rod	1.5 inches (3 cm)
Dump angle	45°
Lower time	2.0s
Raise time	5.0s
Bucket width	68 inches (172 cm)
Boom cylinder	3.5 inches (8 cm)
Rollback time	1.0s
Reach (dumped)	29.5 inches (74 cm)
Bucket cylinder	3.0 inches (7 cm)
Height (at pin)	123 inches (312 cm)
Clearance (dumped)	103 inches (261 cm)
Rollback (ground line)	40°
640 Loader breakout force	7000 lbs (3175 kg)