M4 Overview
The Atrac M4 Cab Chassis is derived from the Goldacres G4 self-propelled model which forms the basis for a very versatile platform. This machine can be used for a wide range of accessories including spreader bodies or any other application that requires a high capacity, high clearance versatile tractor built to carry a load.
Built on a torsionally rigid semi truss fully welded chassis with 5 link suspension and heavy-duty torque rods, rear anti-sway bar and airbag suspension on all for corners to provide a stable, yet smooth ride.
Combine this with a full mechanical driveline to give uncompromising power, reliability and tractability to the ground.
6.5 tonne carrying capacity
1400mm clearance
Choice of tracks from 2-3
Choice of 2 or 4 wheel drive
Premium Cabin
Premium Cabin
Premium cabin is fitted with essential features and comforts to get you through the big days.
Easy to use fully moulded operator side console featuring all sprayer function control switches, drink holder & storage area.
- Automatic transmission selector.
- Grammer air ride seat with adjustable armrest and seat belt.
- Fold away passenger seat.
- Climate controlled air conditioner and heater with active carbon filtration. Ducted overhead storage box for drinks.
- Curved front and rear glass, full-length side glass and large front windscreen wiper.
- Engine monitor
- Two-way tilt adjustable and telescopic steering column
- Twin USB charge points plus 12v power take-off point for electronic accessories<
- Pull down front blind
- Accessory mounting rail.
- Bluetooth AM/FM radio.
- Stylish roof design with forward and rear facing lights (not shown)
Driveline
Engine / Transmission
Cummins Tier 3 QSB 4.5L – 4 cylinder engine rated to 119kw (160hp) and 622N.m (459 lb-ft). Compact yet powerful.
Allison 2500 series 5 speed transmission. Overdrive reduces engine RPM whilst still maintaining 50 km/hr transport speed. Lock up clutches improve performance whilst dramatically reducing heat build up and fuel usage.
Drivetrain
Cummins Tier 3 QSB 4.5L – 4 cylinder engine rated to 119kw (160hp) and 622N.m (459 lb-ft). Compact yet powerful
Allison 2500 series 5-speed transmission. Overdrive reduces engine RPM whilst still maintaining 50km/hr transport speed. Lock up clutches improve performance whilst dramatically reducing heat build-up and fuel usage
Large vertically stacked cooling system for fuel, transmission, water jacket, charge air and air conditioning
Over the Radiator (OTR) air cleaner system with twin stage filtration provides cool clean air to the engine
Rear air lock differential** with inboard disc brakes
Oil filled final drive drop leg with planet hub reduction puts the power to the ground
Rear mounted exhaust system helps reduce in cabin noise
Chassis
- Trussing of chassis in the centre provides maximum strength with minimum weight
- Integrated boom connection points. Non-flexing chassis provides a stable platform for boom control
- Large capacity oil tank situated above the hydraulic pumps. Oil level visible from driver’s seat
- 300L polyethylene fuel tank provides enough fuel for the longest spray days without the need to refuel
4WD System
4WD
The 4WD system utilises a single speed transfer case with front axle disconnect, allowing the sprayer to be used as a 2WD, helping to reduce fuel usage. At the flick of a switch, the front axle can be engaged, providing an equal power split between front and rear axles. If the going gets really tough, then the rear differential lock feature can also be engaged.
Two piece drive shaft transmission to transfer case
Oil cooled transfer case with front axle disconnect
Rubber isolator mounts to reduce vibration
Driven front axle with internal drive shafts and double carden universal joints allows tight turns
Rear axle differential with internal lock feature
Front & rear drop-leg 1:1 ratio chain drive planetary hub 5.33:1 ratio with oil bath lubrication
Transfer case to axle drive shafts
Wheel Track
Wheel Track
Wheel track width requirements can vary significantly depending on crop types and geographic regions.
There are 5 configurations of axles available in addition to wheels and tyres.
| Track width | ||
|---|---|---|
| 380/90 R46 tyres | 480/80 R46 tyres | |
| Fixed narrow track (2WD only) | 2000mm | 2100mm |
|
Fixed wide track (2WD or 4WD*) |
2870mm or 2970mm with offset rims | 2970mm |
| Hydraulic adjustable narrow track on the move (2WD** only) | 2000-3000mm | 2100-3100mm |
| Manual adjustable wide track (2WD only) | 2900-3900mm | 3000-4000mm |
Adjustable Wheel Track
Adjustable Wheel Track
An optional hydraulically adjustable axle providing a true 2000 to 3000mm wheel track is available.
Hydraulic track adjustment can be done on the move with a push of a button. Cylinders located inside the front and rear axles control the track width. Power is transferred to the rear wheels via multistage extendable drive shafts coupled to the droplegs to get the power to the ground.
No diff lock feature when this option is selected. Wheel track based on 380/40 R46 tyres, different width tyres may affect wheel track. Custom axle widths can be manufactured on request (2WD only).
Tight Turning
Tight Turning
The M4 Multi-trac has been designed to turn in very small headlands with the simplicity of a two-wheel steer configuration. The key in achieving this is the layout of the suspension system and open chassis design.
| Axle type | Tyre size | Turning radius* | |
|---|---|---|---|
| Hydraulic adjustable | 2000-3000mm | 380/80 R46 | 5000mm @2m^ |
| 4800mm @3m^ | |||
| Fixed wide | 2WD 3000mm | 4800mm @3m^ | |
| 4WD 3000mm | 5800mm | ||
| Fixed narrow | 2WD 2000mm | 5800mm | |
| Manual adjustable | 3000-4000mm | 4400mm @3m^ | |
| 4200mm @4m^ |
M4 Dimensions
| Dimensions | A (m) | B (m) | C (m) | D (m) | E (m) |
|---|---|---|---|---|---|
| M4 | 4.183 | 2.970* | 7.231 | 3.82 | 1.476** |
*3.5m when 480/80R46 tyres fitted at wheel track 2970mm
**Clearance with 480/80R46 tyres
M4 Specifications
| Feature | Description | M4 |
|---|---|---|
| Engine | Cummins QSB 4.5L cylinder, Tier 3 emission. 119kw (160hp), 622N.m (459lb-ft) | Standard |
| Vertically stacked combi cooler package. Fuel, transmission, water jacket, charge air & air conditioning | Standard | |
| Transmission | Allison 2500 series automatic. Mechanical selector, lock up torque converter, 5 forward & 1 reverse | Standard |
| Drive system | Differential with diff lock (non track width adjustable axles only). 3.33:1 ratio 5.3:1 ratio planet hub final drive leg with oil bath lubrication |
Standard |
| 2 wheel drive | Standard | |
| Full Mechanical Four Wheel Drive (4WD) using transfer box with fixed wheel track set to 2970mm | Option | |
| Steering | 2 wheel front steering system with true Ackerman alignment* | Standard |
| Trimble platform hydraulic steering kit | Option | |
| John Deere platform steering kit | Option | |
| Hydraulics | 100L Plastic reservoir with level and temp gauge Large oil cooler Twin hydraulic circuits Circuit 1 – 45cc/rev variable pump driven off PTO mount on Allison transmission. Max flow 112 l/min Circuit 2 – twin-engine mounted gear pumps for combined displacement of 44cc/rev. Max flow 110 l/min |
Standard |
| Electrical system | LED front and rear mounted roof work lights | Standard |
| 12V – 160amp electrical capacity Dual batteries with master isolator mounted under engine Fully sealed connectors with colour coded wires used throughout the wiring harness |
Standard | |
| LED light bar | Option | |
| LED service lights | Standard | |
| Braking system | Air over hydraulic twin circuit boosted system | Standard |
| Transmission park brake | Standard | |
| 4 Wheel disc brakes | Standard | |
| Chassis | Fully welded semi truss rigid mild steel 200 x 100 x 6mm main rails |
Standard |
| Suspension | 5 link torque rods with rear sway bar. 4 x rolling lobe air springs with ride height levelling. Shock absorbers on all corners, front feature double knuckle for extreme axle articulation | Standard |
| Paint system | Grit blasted steel work followed by high build primer. All unwelded sections seam sealed Wet top coat paint system with high temperature baked finish |
Standard |
| Wheel Equipment | 460/85R38 front and rear | Standard |
| 380/90R46 front & rear | Option | |
| 480/80R46 front & rear | Option | |
| Axle tracks | 2970mm fixed wheel track | Standard |
| 2000mm fixed wheel track | Option | |
| 2000-3000mm hydraulically adjustable track | Option | |
| Mudguards | 4 x full length axle mounted polyethylene mudguards | Standard |
| 4 x leading edge stainless steel crop deflectors | Standard | |
| Cabin | Premium cabin with curved front and rear glass | Standard |
| Dual tilt and telescopic steering column | Standard | |
| Air suspension seat with seat belt. Fully adjustable | Standard | |
| Training seat | Standard | |
| Accessory mounting rail on RHS | Standard | |
| Carbon filtration with positive cab pressurisation | Standard | |
| Bluetooth equipped radio | Standard | |
| Engine and Transmission diagnostic display | Standard | |
| Main cabin access | Full length LHS access platform with auto folding ladder. | Standard |
| Fuel Tank Capacity | 300L Poly diesel fuel tank | Standard |
| Maximum Load Capacity | 6,500 (kg) | Standard |
| Weight | Tare weight** (kg) | 7,500 |
** Weights approx and vary according to options.