Goldacres Super Cruiser G8, Operator'S Manual, Page: 147 / 210

Chapter 10 - Lubrication & Maintenance - 143 G8 Super Cruiser Operator’s Manual MY19 - REV 0
A warning system has been fitted to alert the
operator when the hydraulic oil may be overheating.
When the temperature reaches 95°C, the low air
light will come on and the buzzer will sound. This
warning is shared with the low air warning circuit. It
is important to assess whether there is a problem
with low air or the hydraulic oil is overheating.
IMPORTANT: Do not use this machine in ambient
temperatures exceeding 40°C. Significant damage
may occur where machine is operated continuously
in very hot conditions.
Cease operating the machine and check the
temperature gauge mounted on the side of the
oil tank. If it is high, but the oil cooler is clear of
debris and the electric fan is operating as normal,
then likely the ambient temperature is too high and
the machine should not be operated. Very dusty
environments are more likely to clog the fins of the
oil cooler and should be checked more regularly
under those conditions.
Hydraulic Pumps
The double hydraulic pump is attached directly to
the engine air compressor. These pumps are positive
displacement type pumps and are powered off the
engine timing gears.
• The 22 cc pump is used to supply fluid for the
brakes and engine cooling fan.
• The 32 cc pump is used to supply fluid for the
spray pump.
After fluid leaves the hydraulic pump it travels
through an accumulator charging manifold. It charges
the brake accumulators, then the excess oil is
supplied to the fan on the radiator.
The 63 cc single hydraulic pump is attached directly
on the side of the transmission to the transmission
PTO. This pump is a variable displacement type
pump and is powered off the transmission.
The pump is used to supply fluid for the steering and
most hydraulic functions excluding the brakes, engine
cooling fan and spray pump.
After fluid leaves the hydraulic pump it travels
through a priority valve. This valve prioritises flow to
the steering orbital. When the steering system has
received sufficient flow, the priority valve begins to
enable fluid to travel to the rear hydraulic circuit that
controls boom functions. This flow is determined by
the load sense line from the steering orbital.
Hydraulics - General
PORT DESCRIPTION
P Pressure supply
CF Supply to steering orbital
EF Supply to solenoid bank
LS Feedback from steering orbital
Above: Hydraulic pumps on left hand side of engine.
Above: Hydraulic pump on left hand side of gearbox.
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