| Manufacturer |
Allis Chalmers |
| Price |
- |
| Model |
HD3 |
| Equipment Type |
Agricultural Crawler Tractors |
| Factory |
Springfield, Illinois, USA |
ENGINE DETAIL
The Allis Chalmers HD3 features a robust 175ci (2.9L) diesel engine with a bore and stroke configuration of 3.562 x 4.375 inches, which provides a balance of torque and fuel efficiency for various agricultural and industrial applications. Its Roosa-Master injection pump enhances fuel delivery and performance, though maintenance may require specific expertise to ensure optimal operation. The 1650 RPM rated speed indicates suitability for moderate workloads, while the electric starter offers convenience, but operators should be mindful of the 12-volt system requirements during colder conditions.
| Description |
Allis Chalmers diesel 4-cylinder liquid-cooled |
| Displacemen |
175ci / 2.9L |
| Bore/Strok |
3.562x4.375inches / 90x 111 mm |
| Fuel syste |
Roosa-Master injection pump |
| Air cleane |
oil bath |
| Rated RP |
1650 |
| Starte |
electric |
| Starter volt |
12 |
| Coolant capacit |
9 qts/8.5 L |
ALLIS CHALMERS HD3 ENGINE
The Allis Chalmers HD3 tractor features a robust 2.9L 4-cylinder diesel engine, offering a blend of power and efficiency suitable for moderate agricultural tasks and light construction work. Its compact size enhances maneuverability in tight spaces, while the diesel engine provides better fuel economy and torque compared to gasoline engines. However, potential challenges include limited horsepower for heavy-duty applications and the availability of replacement parts due to its vintage status, necessitating thorough maintenance to ensure longevity.
| Description |
Allis Chalmers 2.9L 4-cyl diesel |
TRANSMISSIONS OVERVIEW
The Allis Chalmers HD3 tractor features an 8-speed transmission combined with a two-speed power shift and a 4-speed mechanical shuttle, offering versatile speed control for various agricultural tasks. This setup provides efficient torque management and smooth transitions between gears, enhancing productivity in fieldwork and loader operations. However, the complexity of the power shift system may require more maintenance and operator training compared to simpler transmission types.
| Description |
8-speed two-speed power shift/4-speed mechanical shuttle |
TRANSMISSION 1
The Allis Chalmers HD3 tractor features a two-speed power shift transmission, allowing seamless transitions between high and low ranges, which enhances operational efficiency in varied terrains. With 8 forward and 2 reverse gears, it offers flexibility for maneuverability in tight spaces, although the wet disc clutch may necessitate periodic maintenance. In scenarios requiring frequent speed adjustments, such as plowing or grading, the power director adds significant value by improving workflow efficiency.
| Transmissio |
Power Director |
| Typ |
two-speed power shift |
| Gear |
8 forward and 2 reverse |
| Clutc |
wet disc (Power Director)/dry disc (gear) |
| Description |
Four gears (1-4) plus reverse (R) with two-speed high/low power shift. |
TRANSMISSION 2
The Allis Chalmers HD3 tractor features a mechanical shuttle transmission with 4 forward and 1 reverse gear, providing straightforward operation in varied terrain and tasks. This design allows for efficient switching between forward and reverse without clutching, but may limit speed range and versatility compared to more modern hydrostatic systems. Ideal for applications like land clearing or light farming, its simplicity can be an advantage in maintenance and reliability.
| Typ |
mechanical shuttle |
| Gear |
4 forward and reverse |
ALLIS CHALMERS HD3 TRANSMISSIONS
The Allis Chalmers HD3 tractor features an 8-speed transmission with a two-speed power shift and a 4-speed mechanical shuttle, providing versatile gearing options for varied terrain and applications, enhancing productivity. The two-speed power shift enables smooth transitions under load, ideal for tasks requiring frequent speed adjustments, while the mechanical shuttle facilitates quick direction changes, beneficial for loader work. However, potential challenges include the complexity of maintaining the transmission system and ensuring operator familiarity with the shifting mechanisms to maximize efficiency.
| Description |
8-speed two-speed power shift/4-speed mechanical shuttle |
MECHANICAL
The Allis Chalmers HD3 tractor features a crawler drive system, ideal for enhancing traction on uneven terrain and providing superior stability for heavy-duty tasks. Its mechanical clutches and contracting band brakes allow for precise control during operation, though they may require maintenance to ensure optimal performance and longevity. The open operator station enhances operator visibility and comfort but may expose the operator to environmental elements.
| Driv |
crawler |
| Steerin |
mechanical clutches |
| Description |
Mechanical contracting band brakes/Open operator station. |
CAPACITY
| Fue |
14gal / 53.0L |
| Hydraulic syste |
16.5gal / 62.5L |
HYDRAULICS
| Typ |
open center |
| Capacit |
16.5gal / 62.5L |
| Valve |
1 to 3 |
| Pump flo |
15gpm / 56.8lpm/25 gpm (optional)/94.6 lpm |
POWER TAKE-OFF (PTO)
| Rear PT |
optional |
| Rear RP |
540 |
ALLIS CHALMERS HD3 TRACKS
DIMENSIONS & TRACKS
| Weigh |
7645lbs / 3467kg |
| Description |
7-inch tracks |
