Goldacres Super Cruiser G8, Руководство оператора, Страница: 146 / 210

142 - Chapter 10 - Lubrication & Maintenance G8 Super Cruiser Operator’s Manual MY19 - REV 0
The Super Cruiser sprayer is fitted with three
hydraulic systems.
The first is used to operate the steering and
hydraulic cylinders on the boom. The second system
is used to operate the cooling fan and the brakes.
The third system is used to operate the spray pump.
These systems operate from a common hydraulic
reservoir. The reservoir has a sight tube mounted on
the side. The oil level must always be visible in top
third of the tube. The oil temperature will normally
run at 60-80 degrees Celsius.
NOTE: The lubricant specification can be found in
Chapter 10 ‘Lubrication & Maintenance’.
Main Hydraulic Systems
The first pump is a 63 cc variable displacement
piston pump. This pressure line give priority to the
steering circuit first. The spray pump and Norac
boom height control system uses load sense to
ensure correct pressure is delivered as required. All
other functions require an unloader to stroke up the
pump to max pressure.
The second pump is driven from the air compressor
drive. This pump operates the cooling fan and the
braking system. This system will give priority to the
brakes which also includes the accumulators, and
when up to pressure and charge, the cooling fan will
receive full pressure. Max cooling fan pressure is set
to 175 Bar.
The braking accumulators are charged at 90 Bar,
if one of the accumulators fail, a check valve will
prevent the other accumulator from losing pressure.
The pressure goes from the accumulators to the
foot pedal, and then to the brakes in the axles.
The park brake hydraulics goes through a pressure
reducing valve to ensure the pressure does not
exceed 35 Bar. The park brake is actuated (released)
with a solenoid valve after the cabin park brake
switch is released.
Return Filter
The hydraulic filter is located in the tank in front of
the cabin. This filter should be replaced after the first
50 hours of use and then every 500 hours after that.
The return filter filters all of the return oil to the
reservoir. There is a red indicator located on the top
of the filter. If the indicator pops out then the filter
must be replaced because it is blocked and causing
back pressure through the system. This filter should
be checked once the oil has reached operating
temperature as cold oil can cause a false reading on
the indicator.
Oil Cooler
The oil cooler is located under the rear of the
cabin mounted on the chassis. This cooler uses an
electric fan and a thermo switch to keep the oil at
the optimum temperature. The cooler will switch on
when the oil flowing through reaches 55°C. Ensure
that the fins on the cooler are kept clear of debris.
Hydraulics - General
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