Auman │ BJ4187 │ Prime Mover │ Tractor │ 4x2


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ABS Braking System, 12-Speed Transmission, Max Output 375ps

Highlight Feature of Bison bj4187

Engine Model

WD12.375, Euro II
Turbocharged intercooler
375ps @ 2,200rpm
153kg.m @ 1,300-1,600rpm

Transmission Model

12-speed transmission for better gear distribution and improve fuel economy

Braking System

Dual circuit Full air with ABS ensures excellent braking effort

Hub Reduction

For better gradeability and tractive effort.

Rear Axle

Heavy duty rear axle with differential lock to withstand heavy load.

Rear Suspension

Robust heavy duty Trunnion Mounted Leaf Spring(BJ4253) rear suspension to withstand heavy load.

Stabilizer Bar

Front & Rear Stabilizer bar to reduce rolling for uneven and winding road operation (Model BJ4187).

Fuel Tank

Lockable aluminum type
Capacity - 420L

Cabin Suspension

Suspension cabin provides comfortable ride and reduces driver fatigue on long haulage.

Driver Seat

Multiple angle reclining seat with armrest coupled with suspension seat and height adjuster to suit all driving position

Sleeping Berth

Cabin crew to able to have a comfortable rest with the Spacious sleeping berth on long haulage journey

Cabin Interior

Luxury interior with interior roof mounted Glove Box Compartment and Roof Top Air Ventilation Vent allows fresh air circulation into cabin interior.

External Mirror

Multiple mirrors provides all round visibility for better control of vehicle.

Access Steps

Lighted for crew safety during night operation.

Model BJ 4187 (4x2)
GVW 18,000
GCW 55,000
Minimum Turning Radius (m) 8
Maximum Speed (km/hr) 115
Maximum Gradeability (%) 27
Make and Model Weichai, WD12.375, EURO II
Type Water Cooled, Turbocharged Intercooler
Number of Cylinders 6 Cylinder Inline
Bore x Stroke (mm) 126 x 155
Total Piston Displacement (cc) 11.596
Max. Output (ps) 375 @ 2,200 rpm
Max. Torque (kg.m) 153 @ 1,300 - 1,600 rpm
Compression Ratio 17.1 :1
Lubrication System Force Feed by Gear Pump
Cooling System Water Cooled
Fuel System  
- Fuel Injection Pump Direct Injection
Air Cleaner Dry Paper Element Type
Make & Model FAST, 12JSD180TA
Type 12 Forward Speed & 2 Reverse Speed
Gear Ratios 1st : 12.1 , 2nd : 9.41 , 3rd : 7.31 , 4th : 5.71 , 5th : 4.46
6th : 3.48 , 7th : 2.71 , 8th : 2.11 , 9th : 1.64 , 10th : 1.28
11th : 1.0 , 12th : 0.78 , Rev 1 : 11.56 , Rev 2 : 2.59
Gear Shift Manual Shift
Final Reduction Ratio 4.8
Clutch Single Disc, Dry Type, Diaphragm Spring
Front Axle Rigid / Reverse Elliot " I " Beam
- Front Spring Leaf Spring with Stabilizer Bar
- Width x Span x Leaves 90 x 1,800 x 9
Rear Axle Full Floating Pressed Steel Banjo Type Housing, Hub Reduction
- Rear Spring Semi-elliptic Leaf Spring with Stabilizer Bar
- Width x Span x Leaves (Main) 100 x 1,800 x 9
- Width x Span x Leaves (Auxiliary) 100 x 1,350 x 6
Shock Absorber Telescopic Double Acting
Wheels and Tyre  
- Tyres (Front) 295/80R22.5
- Tyres (Rear) 295/80R22.5
- Rim 8.25 x 22.5
- Spare Wheel 295/80R22.5
Steering Hydraulic Power Assistance
Service Brake Full Air Brake, Dual Air Line, ABS
- Front Drum
- Rear Drum
Parking Brake Pheumatically Control Brake Acting on Rear Wheel
Auxiliary Brake Exhaust Brake
Frame Ladder Type
Fuel Tank (L) Aluminium ⁄ 420 L
Electrical Equipment 24 Volt
- Battery 165A.H 12volt x 2
- Headligths Filament Headlamp
Others Fog Lamp, Stoplight, Licence Light,
  Turn Signal, Back-up Light, Air Horn
Chassis with Cab 6,840
- on Front Wheels 4,620
- on Rear Wheels 2,220
Designed Gross Vehicle Weight 18,000
- Designed Front Axle Load 7,500
- Designed Rear Axle Load 13,000
- Designed Rear 2nd Axle Load -
Wheelbase (WB) 3600
Overall Length (OL) 6160
Overall Width (OW) 2495
Overall Height (OH) 3410
Front Tread (FT) 2005
Rear Tread (RT) 1800
Front Overhang (FOH) 1555
Rear Overhang (ROH) 1005

All specification are subject to change without prior notice.