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Allis Chalmers HD-4 Loader

Allis Chalmers HD-4 Loader tractor
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The Allis Chalmers HD-4 Loader is an industrial crawler tractor produced from 1966 to 1969. It features a 3.3L 4-cylinder liquid-cooled diesel engine producing 52 hp gross, coupled with a 3-speed torque converter transmission. The tractor has a crawler drive with external band brakes and an open operator station. It is equipped with a front-end loader attachment capable of lifting 5000 lbs and a breakout force of 10900 lbs. The HD-4 Loader has 10-inch or 12-inch tracks, weighs 12400 lbs, and offers hydraulic pressure of 1625 psi with pump flow options of 15 or 25 gpm. It is designed for industrial applications requiring robust crawler performance and loader capabilities.
Allis ChalmersHD-4 Loaderindustrial crawler tractor52 hp3.3L diesel enginetorque converterfront-end loadercrawler tracks
Power-
Founded-
ModelHD-4 Loader

Technical Specifications

Detailed specifications and technical data for Allis Chalmers HD-4 Loader

Power

Engine (gross):52 hp (38.8 kW)

Engine

Type:diesel
Model:Allis Chalmers 3.3L 4-cyl diesel
Torque:141.5 lb-ft (191.9 Nm)
Cooling:liquid-cooled
Starter:electric
Cylinders:4-cylinder
Fuel tank:18 gal (68.1 L)
Rated RPM:2100
Torque RPM:1600
Air cleaner:dry
Bore/Stroke:3.88x4.25 inches (99 x 108 mm)
Compression:16.25:1
Displacement:200 ci (3.3 L)
Oil capacity:8 qts (7.6 L)
Power (gross):52 hp (38.8 kW)
Starter volts:12
Coolant capacity:16 qts (15.1 L)

Tracks

Width:10 inches (25 cm), 12 inches (30 cm)
Area on ground:697.5 in² (0.5 m²), 837 in² (0.5 m²)
Ground pressure:7.4 psi (0.5 bar)
Length on ground:69.75 inches (177 cm)

Variants

HD-4:crawler
HD-4 Loader:loader-crawler

Dimensions

Gauge:51 inches (129 cm)
Width:66 inches (167 cm)
Length:154.5 inches (392 cm)
Weight:12400 lbs (5624 kg)
Height (hood):73.625 inches (187 cm)
Clearance (drawbar):10 inches (25 cm)

Hydraulics

Pressure:1625 psi (112.0 bar)
Pump flow:15 gpm (56.8 lpm)
Optional pump flow:25 gpm (94.6 lpm)

Mechanical

Drive:crawler
Brakes:External band brakes
Operator station:Open operator station

Production

Type:Industrial Crawler tractor
Manufacturer:Allis Chalmers
Years produced:1966 - 1969

References

Loader & Ripper for H-4 & HD-4 Crawler Tractors:published in 1965, by Allis Chalmers

Attachments

Type:front-end loader
Dump time:2.7s
Dump angle:45°
Lower time:5.61s
Raise time:6.53s
Bucket width:66 inches (167 cm)
Lift capacity:5000 lbs (2268 kg)
Rollback time:2.4s
Breakout force:10900 lbs (4944 kg)
Reach (dumped):29 inches (73 cm)
Reach (ground):62.5 inches (158 cm)
Height (at pin):120 inches (304 cm)
Clearance (dumped):98 inches (248 cm)
Rollback (ground line):38°

Transmission

Type:3-speed torque converter
Gears:3 forward and reverse
Clutch:hydraulic disc
Oil capacity:12.25 qts (11.6 L)

Serial Numbers

Location:Serial number on the front of the crawler, below the grill.