Recovery tractors are designed for evacuation of inoperative dump trucks and other quarry equipment weighing from 70000 to 160000 kg to repair station on technological roads under various climatic conditions.
Vehicles can be additionally equipped with centralized lubricatin system, air-conditioner, counterbalance weight, etc.

BELAZ 74131

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BELAZ 74131
Recovery tractors are designed for evacuation of inoperative dump trucks and other quarry equipment weighing from 70000 to 160000 kg to repair station on technological roads under various climatic conditions.
Vehicles can be additionally equipped with centralized lubricatin system, air-conditioner, counterbalance weight, etc.
Technical Data
Gallery
Engine
Four-cycle turbocharged and intercooled direct diesel engine with V-type cylinders arrangement.
Rated power@ 1900 rpm, kW (hp) - 1194 (1600)
Maximum torque@ 1500 rpm, N.m - 6292
Number of cylinders - 16
Cylinders displacement, l - 50,3
Cylinder diameter, mm - 159
Piston stroke, mm - 190
Specific fuel consumption, g/kW hr - 207
Air cleaning is performed bу three-stage filter with dry-type elements. Engine exhaust expulsion is performed through two mufflers mounted straight up at the recovery tractor sheet guard.
Circulating lubrication system is pressurized and designed with "wet" sump. Single-loop fluid cooling system with forced circulation.
Fluid preheating system.
Pneumatic starter starting system.
Electric equipment system voltage, V - 24
Electric drive
AC-DC drive with traction alternator, two traction motors, motorized wheels douЫe-reduction units with spur gears, adjustment units, microprocessor-based control system and control devices.
Transmission ratio - 30,36
Transmission type - AC-DC
Traction alternator - GSN-500
Traction motor - EK-590
Suspension
Suspension is conventional for front and driving axles and equipped with trailing arms, central joints and transverse rods.
Cylinders are pneumohydraulic (nitrogen and oil) with inbuilt hydraulic shock absorber. Two cylinders are оп the front axle and two cylinders are оп the rear axle.
Cylinder piston stroke, mm:
- front - 320
- rear - 290
Steering
Hydrostatic steering with steerable front wheels.
Steering angle, degree - 42
Turning radius, m - 13
Overall turning diameter, m - 28
The steering meets ISO 5010 requirements.
Brakes
Recovery tractor brake system meets ISO 3450 international safety requirements and is equipped with service, parking, auxiliary and emergency brake systems.
Service brake system consists of front wheels disk brakes with two brake gears per disk and rear wheels disk brakes with two brake gears per disk and automatic gap adjustment. The disks are mounted оп traction motor shafts.
Parking brake system is permanently closed with one rear wheels brake gear per disk, spring actuator and hydraulic control.
Auxiliary brake system is electrodynamic braking by traction motors with forced air cooling of brake resistors.
Emergency brake system uses parking brake and operable circuit of wheel brakes.
Brake resistors - UVTR 2x600
Power, kW - 1200
Tires
Pneumatic tubeless tires with quarry tread pattern.
Designation - 33.00R51 or 33.00-51
Inflation pressure, MPа - 0,62; 0,7
Rim designation - 24.00-51/5.0
Frame
Frame is welded of high-strength low-alloy steel with application of cast elements at the maximum loading points and equipped with box-section variable-height side-members interconnected bу cross-members.
Hydraulic system
Hydraulic system is combined for dumping gear, steering and brakes actuator. The system is equipped with variable-displacement axial-piston oil pump.
Maximum pressure in hydraulic system, MPa - 18
Maximum pump delivery@ 1900 rpm, dmЗ/min - 474
Filtering degree, mcm - 10
Cab
Two-man two-door cab is equipped with air-sprung adjustable driver seat, additional passenger seat and adjustable steering column. The cab meets EN 474-1 and EN 474-6 requirements that specify permissible levels of in-cab noise, vibration, content of hazardous substances and dust. Driver's workplace meets ROPS and FOPS safety requirements.
In-cab noise level is not more than 80 dB(A).
Local vibration level is not more than 126 dB(A).
Overall vibration level is not more than 115 dB(A).
Lifting hitch mechanism
Lifting hitch mechanism consists of fixed bracket and movable bracket. Movable bracket is equipped with removable catches (upper and lower) and moves through fixed bracket bу means of rods and two hydraulic cylinders. There are three fixation levels for movable bracket. Fixation of movable bracket is performed from driver cab. Bottom of movable bracket is lowered to the ground. Control of the mechanism is performed electrohydraulically from the driver cab and bу means of remote control.
Movable bracket move, mm - 2050
Overall dimensions
Weight
Maximum payload capacity, kg - 125 000
Unladen weight distribution оn axles, %:
Front: 50,4
Rear: 49,6
Maximum force to lifting mechanism at towing bу:
- lower catch, kg - 50 000
- upper catch, kg - 70 000
Counterbalance weight, kg - 10 400
Refill capacities, l
Fuel tank: 1900
Engine cooling system: 410
Engine lubrication system: 195
Hydraulic system: 490
Motor-in-wheel reduction gears: 92 (46x2)
Suspension cylinders:
Front: 33.8 (16,9x2)
Rear: 57,4 (28,7x2)
Equipment
  • Ballast for increment of front axle load
  • Sheet guard with аn area for passage from cab to the guard
  • Flashing light and headlight for sheet guard zone lighting
  • Two ladders from right and left side for going upstairs from the ground to the sheet guard and to the cab
  • Boxes for storage of accessories
  • Splash guards of rear wheels
  • Hydraulic connector for joining to dumping gear cylinders of towed dump truck for the purpose of its unloading
  • Hydraulic connector for joining to rear axle brake system of towed dump truck for the purpose of its unbraking at towing
  • Pneumatic connector for air supply to receivers of towed vehicle
  • Six additional fire extinguishers mounted at the sheet guard.
Special equipment
Standard:
  • Fire-fighting system
  • Starting preheater
  • Heating and conditioning unit
Optional:
  • Hydraulic connector for unbraking of towed dump truck
  • Automatic lubrication system
  • Telemetering tire-pressure monitoring system
  • Video-vision system
  • Fast fueling system "Wiggins"
  • Air filters "Fleetguard"