Same brandAllis Chalmers HD7
The Allis Chalmers HD7 is a powerful crawler tractor built for both agricultural and general use. It runs on tracks instead of wheels, making it great for working in tough soil conditions. The HD7 has a sturdy build, measuring 128 inches long, 81 inches wide, and 69 inches tall. It's a heavy machine, weighing 14,000 pounds, which is about average for tractors of its kind. Under the hood, the HD7 has a General Motors diesel engine with three cylinders. The engine is liquid-cooled and has a blower to help it run better. It has an average engine size for its class, with 213 cubic inches of displacement. The engine runs at 1,500 RPM, which is on the lower end compared to other tractors. This tractor has a sliding gear transmission with four forward gears and one reverse gear, giving the driver good control over speed and power. The HD7 also features an electric starter and an oil bath air cleaner to keep the engine running smoothly.
Key specifications
- Category
- Crawler
- Operating weight
- 14,000 lb
- Transmission
- Sliding Gear
Overview
About the Allis Chalmers HD7
The Allis Chalmers HD7 is a powerful crawler tractor built for both agricultural and general use. It runs on tracks instead of wheels, making it great for working in tough soil conditions. The HD7 has a sturdy build, measuring 128 inches long, 81 inches wide, and 69 inches tall. It's a heavy machine, weighing 14,000 pounds, which is about average for tractors of its kind. Under the hood, the HD7 has a General Motors diesel engine with three cylinders. The engine is liquid-cooled and has a blower to help it run better. It has an average engine size for its class, with 213 cubic inches of displacement. The engine runs at 1,500 RPM, which is on the lower end compared to other tractors. This tractor has a sliding gear transmission with four forward gears and one reverse gear, giving the driver good control over speed and power. The HD7 also features an electric starter and an oil bath air cleaner to keep the engine running smoothly.
Full specifications
Recorded specifications
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | HD7 |
| Category | Crawler tractor |
| Type | Crawler |
| Operating weight | 14,000lb(6,350 kg) |
Engine
| Make | General Motors |
|---|---|
| Model | Mar-71 |
| Cylinders | 3 |
| Displacement | 213ci(3.49 L) |
| Bore | 4.25in(107.9 mm) |
| Stroke | 5in(127 mm) |
Transmission
| Type | Sliding Gear |
|---|---|
| Forward gears | 4 |
| Reverse gears | 1 |
Chassis & drive
| Chassis | Crawler |
|---|---|
| Drive | Track |
Dimensions
| Length | 128in(3,251 mm) |
|---|---|
| Width | 81in(2,057 mm) |
| Height | 69in(1,753 mm) |
| Operating weight | 14,000lb(6,350 kg) |
Capacities
| Cooling system | 5.75gal(21.77 L) |
|---|
Category medians
HD7 vs. Crawler median
Allis Chalmers HD7 compared with other Crawler tractors
| Spec | This model | Crawler median | Difference | Percentile |
|---|---|---|---|---|
| Engine Displacement | 213 ci | 468 ci | -54% | 29th |
| Cylinders | 3 | 6 | -50% | 10th |
| Forward Gears | 4 | 10 | -60% | 16th |
| Operating Weight | 14,000 lb | 23,320 lb | -40% | 43rd |
| Length | 128 in | 146 in | -12% | 33rd |
| Width | 81 in | 79.5 in | +2% | 51st |
| Height | 69 in | 90.6 in | -24% | 25th |
Medians and percentiles are calculated from the crawler tractors in the database that have a recorded value for each specification (sample size 134–192 models).
Same manufacturer
Other Allis Chalmers models
Other manufacturers
Models with similar horsepower
Gallery
Allis Chalmers HD7 photos
FAQ
Frequently asked questions
How many cylinders does the Allis Chalmers HD7 have?
The Allis Chalmers HD7 runs a 3-cylinder engine with a displacement of 213 ci.
What type of transmission does the Allis Chalmers HD7 have?
The Allis Chalmers HD7 uses a Sliding Gear transmission offering 4 forward gears.
What is the working weight of the Allis Chalmers HD7?
The operating weight of the Allis Chalmers HD7 is approximately 14,000 lb.
What routine service does the Allis Chalmers HD7 need?
Regular maintenance for the Allis Chalmers HD7 includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.