SRT55D Off-Highway Truck
9-4
Safety, Operation and Maintenance Manual
Steering system
Independent hydraulic steering with closed-
center steering valve, pressure compensating
piston pump and accumulator.
Accumulator provides uniform steering
regardless of engine speed. In the event of
loss of engine power, it provides emergency
power to system for steering. A low pressure
indicator light warns of system pressure below
115bar (1,660 lbf/in2).
Minimum turning diameter...............19,080mm
Hoist system
Independently hydraulic system.Two hoist
cylinders are mounted between the frame rails
to keep stable of body while raises the body.
System Relief Pressure.........................205bar
(2,972 lbf/in
2
)
Body Hydraulic Pump Flow Rate @ 2,100 rpm
...........................................................307L/min
(81 USgal/min)
Body raise time.........................……......14 sec
Body lower time.....................……..........13 sec
Body
Longitudinal 'V' type floor with integral
transverse box-section stiffeners. The body is
exhaust heated and rests on resilient impact
absorption pads.
Body wear surfaces are high hardness
abrasion resistant steel.
Plate thicknesses:
Floor..........................……..........18mm (0.70in)
Side......…...........…......…......…10mm (0.39in)
Front lower……………………….10mm (0.39in)
Volumes :
Struck (SAE)……………...………..26m
3
(34yd
3
)
Heaped 2:1 (SAE)……..…………..35m
3
(46yd
3
)
Frame
Box structure with variable-section provides
resistance to bending and torsion.
Mild steel used throughout bumper, front
Technical Data
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