5-5 TA9 & TA10 Dumper 0803-2 November 2009
Description
Hydraulic System
The hydraulic system provides power to operate the vehicle
steering and to power the skip elevation.
The system comprises an engine driven hydraulic pump
drawing oil from a tank located inside the chassis. The tank is
fitted with a suction strainer, an oil level gauge, and a filler/
breather cap.
The pump generates a maximum pressure of 200 bar (2900psi):
Hydraulic Circuit.
The system is protected by a relief valve in the control valve
which is set at the same pressure. A return line filter is fitted to
the circuit and is of the replaceable cartridge type.
Steering of the dumper is by means of a single hydraulic ram
connecting the front and rear frames, the oil supply to the ram is
controlled by an Orbitrol hydrostatic steering unit. The unit
receives oil via a carry over port in the 3 way control valve and
meters oil to the steering ram as the steering wheel is turned, at
all times.
A - Skip Ram E - Hydraulic Tank
B - Skip Ram F - Hydraulic Pump
C - Steering Ram G - Control Valve
D - Orbitrol
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