Allis Chalmers industrial tractors
Allis Chalmers HD-4 Loader
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.
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. |
|---|
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