The Allis Chalmers 615 is a 2WD backhoe loader tractor, manufactured by Allis Chalmers in Topeka, Kansas, USA from 1966 to 1974.
The Allis Chalmers 615 is equipped with one of three engines: a 2.6 L (160.0 cu·in) four-cylinder gasoline engine, a 2.9 L (175.0 cu·in) four-cylinder diesel engine or 3.3 L (200.0 cu·in) four-cylinder diesel engine and one of two transmissions: a power shuttle transmission with 4 forward and 4 reverse gears or a gear type with dry disc clutch transmission with 4 forward and 1 reverse gears.
The tractor could be equipped with the following engines:
- Allis-Chalmers. It is a 2.6 L, 2,622 cm2, (160.0 cu·in) four-cylinder natural aspirated gasoline engine with 92.0 mm (3.62 in) of the cylinder bore and 92.0 mm (3.62 in) of the piston stroke. The compression ratio rating is 8:1. This engine produced 57.7 PS (42.4 kW; 56.9 HP) at 2,000 rpm of output power and 208.8 N·m (21.3 kg·m, 153.9 ft·lb) at 1,625 rpm of peak torque.
- Allis-Chalmers. It is a 2.9 L, 2,868 cm2, (175.0 cu·in) four-cylinder natural aspirated diesel engine. The cylinder bore is 90.0 mm (3.54 in) and the piston stroke is 111.0 mm (4.37 in). The compression ratio rating is 15.5:1. This engine produced 44.6 PS (32.8 kW; 44 HP) at 2,000 rpm of output power.
- Allis-Chalmers D2200. It is a 3.3 L, 3,277 cm2, (200.0 cu·in) four-cylinder natural aspirated diesel engine. The cylinder bore is 98.0 mm (3.87 in) and the piston stroke is 105.0 mm (4.12 in). The compression ratio rating is 16.25:1. This engine produced 57.8 PS (42.5 KW; 57.0 HP) at 2,000 rpm of output power and 207.5 Nm (21.17 kg·m; 153.14 ft·lb) of torque.
The Allis Chalmers 615 is equipped with power steering, mechanical drum brakes, an open operator station and 60.6 liters (16 US gal.; 13.3 Imp. gal) fuel tank.
Allis Chalmers 615 Specifications
| General Specifications | |
| Model | Allis Chalmers 615 |
| Length | – |
| Width | – |
| Height (steering wheel) | 1,600 mm (63 in) |
| Wheel base | 2,200 mm (86.6 in) |
| Weight | – |
| Fuel tank capacity | 60.6 liters (16 US gal.; 13.3 Imp. gal) |
| Battery | 12V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Allis-Chalmers |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Gasoline |
| Displacement | 2.6 L, 2,622 cm2, (160.0 cu·in) |
| Bore and stroke | 92.0 mm X 92.0 mm (3.62 in X 3.62 in) |
| Compression ratio | 8:1 |
| Horsepower | 57.7 PS (42.4 kW; 56.9 HP) at 2,000 rpm |
| Torque | 208.8 N·m (21.3 kg·m, 153.9 ft·lb) at 1,625 rpm |
| Starter | Electric |
| Oil capacity: | 3.8 L (4 US. qts, 3.3 Imp. qts.) |
| Coolant capacity: | 9.5 L (10 US. qts, 8.4 Imp. qts.) |
| Spark plug | ACDelco C-45, Champion J-7, Auto-Lite A-5 |
| Engine | |
| Engine model | Allis-Chalmers |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 2.9 L, 2,868 cm2, (175.0 cu·in) |
| Bore and stroke | 90.0 mm X 111.0 mm (3.54 in X 4.37 in) |
| Compression ratio | 15.5:1 |
| Horsepower | 44.6 PS (32.8 kW; 44 HP) at 2,000 rpm |
| Starter | Electric |
| Engine | |
| Engine model | Allis-Chalmers D2200 |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 3.3 L, 3,277 cm2, (200.0 cu·in) |
| Bore and stroke | 98.0 mm X 105.0 mm (3.87 in X 4.12 in) |
| Compression ratio | 16.25:1 |
| Horsepower | 57.8 PS (42.5 KW; 57.0 HP) at 2,000 rpm |
| Torque | 207.5 Nm (21.17 kg·m; 153.14 ft·lb) at 1,750 rpm |
| Oil capacity: | 8.5 L (9.0 US.qts, 7.5 Imp. qts) |
| Coolant capacity: | 12.8 L (13.5 US.qts, 11.3 Imp. qts) |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Power |
| Brakes | Mechanical drum |
| Final drive | Bull gear |
| Transmission model | – |
| Transmission type | Power shuttle |
| Gears | 4 forward and 4 reverse |
| Speed | Forward: 25.9 kmh (16.1 mph) Reverse: 29.9 kmh (18.6 mph) |
| Transmission model | – |
| Transmission type | Gear type with dry disc clutch |
| Gears | 4 forward and 1 reverse |
| Speed | Forward: 25.9 kmh (16.1 mph) Reverse: 8.0 kmh (5 mph) |
| Tires | |
| Front tires | Ag: 7.50×16 |
| Rear tires | Ag: 16.9×24 |
| PTO (Power take-off shaft) | |
| Rear PTO type | – |
| Rear PTO speed | 540/1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Pressure | 2250 psi (155.1 bar) |
| Pump flow | 24 gpm (90.8 lpm) |
| Steering flow | 5.25 gpm (19.9 lpm) |
| Total flow | 4.75 gpm (18 lpm) |

ive got a allis chalmers 615 industrial diesel, tractor,loader,backhoe, and the rear differential is tore out of it, it looks to b sayn 6:37 on ring gear,any help will b appreciated thanks for your time