| Manufacturer |
Allis Chalmers |
| Price |
24,550(USD) |
| Model |
7040 |
| Equipment Type |
- |
| Factory |
West Allis, Wisconsin, USA |
NEBRASKA TRACTOR TEST 1166 2
| Description |
Diesel Power Director 2WD October 29 - November 7, 1974 Link: Nebraska Tractor Test 1166 file PTO performance Drawbar performance Gear 4SL used for power test. Gear 2SL used for pull test |
| Power at rated engine speed |
136.49hp / 101.8kW |
| Fuel use |
8.8gal/hour / 33.3l/hour |
| Power at rated PTO speed |
136.26hp / 101.6kW |
| Max power |
114.23hp / 85.2kW |
| Max pull |
13,619lbs / 6177kg |
NEBRASKA TRACTOR TEST 1196
| Description |
Diesel power shift 2WD November 3 - 20, 1975 Link: Nebraska Tractor Test 1196 file PTO performance Drawbar performance Gear 1H used for power test Gear 2L used for pull test |
| Power at rated engine speed |
136.30hp / 101.6kW |
| Fuel use |
8.8gal/hour / 33.3l/hour |
| Power at rated PTO speed |
136.15hp / 101.5kW |
| Max power |
114.34hp / 85.3kW |
| Max pull |
13,547lbs / 6144kg |
ALLIS CHALMERS 7040 POWER
| Drawbar (claimed) |
117hp / 87.2kW |
| PTO (claimed) |
136hp / 101.4kW |
| Drawbar (tested) |
114.34hp / 85.3kW |
| PTO (tested) |
136.49hp / 101.8kW |
ENGINE DETAIL
The Allis Chalmers 7040 is powered by a robust 7.0L turbocharged diesel engine, providing substantial torque for heavy-duty applications. With a 16:1 compression ratio and a rated RPM of 2300, it balances power with efficiency, suitable for both agricultural and industrial tasks. Key considerations include the optional pre-heating system for colder climates and its sizable oil and coolant capacities, which enhance operational longevity but may increase maintenance complexity.
| Description |
Allis Chalmers 3500 Mark II turbocharged diesel 6-cylinder liquid-cooled |
| Displacement |
426ci / 7.0L |
| Bore/Stroke |
4.25x5.00inches / 108x 127 mm |
| Pre-heating |
ether/coolant heater (optional) |
| Compression |
16:1 |
| Rated RPM |
2300 |
| Starter volts |
12 |
| Oil capacity |
19qts / 18.0L |
| Coolant capacity |
31qts / 29.3L |
ALLIS CHALMERS 7040 ENGINE
The Allis Chalmers 7040 features a robust 7.0L 6-cylinder diesel engine, delivering solid torque for demanding agricultural tasks. Its advantages include efficient fuel consumption and lower emissions associated with modern diesel technology, but potential challenges may arise in parts availability due to the vintage nature of the model. Operators should be mindful of maintenance on the hydraulic system, which can impact performance and operational efficiency.
| Description |
Allis Chalmers 7.0L 6-cyl diesel |
TRANSMISSIONS OVERVIEW
The Allis Chalmers 7040 tractor features a 20-speed partial power shift transmission, allowing for precise control of speed and torque, making it highly versatile for various agricultural tasks. The 12-speed partial power shift option offers a simpler transmission for less demanding applications, though it may limit gearing flexibility. Operators should consider the type of work; the 20-speed option excels in high-variation tasks, while the 12-speed may suffice for routine field work.
| Description |
20-speed partial power shift 12-speed partial power shift |
TRANSMISSION 1
The Allis Chalmers 7040 features a partial power shift transmission with 20 forward and 4 reverse gears, enhancing operational flexibility in varying conditions. Its dual range (fast/slow) and high-low power shift system allow seamless gear transitions, improving efficiency during field tasks. However, operators must be adept with the floor-mounted shifter and side-console lever, as the complexity may present a learning curve for inexperienced users.
| Transmission |
Power Director |
| Type |
partial power shift |
| Gears |
20 forward and 4 reverse |
| Description |
Five gears, plus reverse, with two ranges (fast/slow) and high-low power shift. Floor-mounted shifter selects gear, side-console lever selects range. Foot-operated buttons control the Power Director power shift. |
SPEEDS 1
| Description |
With 18.4x38 rear tires |
TRANSMISSION 2
The Allis Chalmers 7040's partial power shift transmission provides 12 forward and 2 reverse gears, enhancing operational flexibility for various agricultural tasks. The clutchless power shift feature allows for seamless gear changes without interrupting power delivery, which can improve efficiency and reduce operator fatigue. However, users may need to be cautious with the gear selection to prevent potential engine strain during rapid shifts, particularly in high-load scenarios.
| Transmission |
Power Shift |
| Type |
partial power shift |
| Gears |
12 forward and 2 reverse |
| Description |
Six gears in two ranges (slow/fast). Clutchless power shift between gears. |
SPEEDS 2
| Description |
With 18.4x38 rear tires |
MECHANICAL
The Allis Chalmers 7040 tractor features a 4x2 2WD chassis, which offers reduced weight and simplicity in operation, making it suitable for flat terrains and less demanding workloads. The differential lock enhances traction on slippery surfaces, while the hydrostatic power steering reduces operator fatigue during long hours of use. The 20-speed partial power shift transmission provides versatility in speed selection, facilitating efficient operation from fieldwork to transport tasks; however, it may lead to increased complexity in maintenance compared to simpler transmission systems.
| Chassis |
4x2 2WD |
| Differential lock |
power standard |
| Steering |
hydrostatic power |
| Brakes |
differential hydraulic wet disc |
| Cab |
Acousta cab standard with heater, air-conditioning optional. Optional radio and 8-track tape player. Four-post ROPS canopy optional. |
| Transmissions |
20-speed partial power shift/12-speed partial power shift |
CAPACITY
| Fuel |
51gal / 193.0L/13gal / 49.2L (optional tank) |
| Hydraulic system |
24.1gal / 91.2L |
HYDRAULICS
| Type |
closed center |
| Capacity |
24.1gal / 91.2L |
| Valves |
2 or 3 |
| Pump flow |
22gpm / 83.3lpm |
| Total flow |
45gpm / 170.3lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540/1000/1000 (optional) |
ALLIS CHALMERS 7040 TIRES
The Allis Chalmers 7040 features Ag front tires sized 10.00-16, providing decent maneuverability in tight spaces, while its versatile rear tire options (20.8-38 to 30.5-32) enhance traction and stability for various soil conditions and load capacities. This adaptability allows farmers to customize the tire setup to optimize performance for specific agricultural tasks, from tillage to transport. However, selecting the wrong rear tire size may impact overall stability and could affect fuel efficiency during operation.
| Ag front |
10.00-16 |
| Ag rear |
20.8-38/23.1-34/24.5-32/30.5-32/15.5-38/16.9-38 |
DIMENSIONS
| Wheelbase |
106inches / 269cm |
| Length |
173.6inches / 440cm |
| Width |
95.5inches / 242cm/119.5inches / 303cm (long axle) |
| Operating weight |
11,700lbs / 5307kg |
| Ballasted weight |
17,380lbs / 7883kg |
| Clearance (front axle) |
22.4inches / 56cm |
| Clearance (rear axle) |
28inches / 71cm |
| Front tread |
62 to 88inches / 157to 223 cm |
| Rear tread |
64 to 91inches / 162to 231 cm |
ALLIS CHALMERS 7040 HEIGHT
| Steering wheel |
87inches / 220cm |
| Hood |
68inches / 172cm |
| Exhaust |
116inches / 294cm |
DIMENSIONS & TIRES
The Allis Chalmers 7040 tractor features a 106-inch wheelbase, providing enhanced stability and maneuverability during field operations, especially in tight spaces. At a weight of 11,700 lbs, it offers substantial traction, making it ideal for tillage and heavy-duty applications, though its weight can pose challenges in wet soil conditions. The tire configuration, with 11.00-16 front tires and 18.4-38 rear tires, balances load support and flotation, optimizing performance on varied terrains while potentially requiring careful monitoring for wear and soil compaction.
| Wheelbase |
106inches / 269cm |
| Weight |
11,700lbs / 5307kg |
| Front tire |
11.00-16 |
| Rear tire |
18.4-38 |
7040 SERIAL NUMBERS
| Location |
Above PTO shield |
| 1975 |
1303 |
| 1976 |
4089 |
| 1977 |
6839 |
ELECTRICAL
| Charging system |
alternator |
| Battery volts |
12 |
