Goldacres Crop Cruiser G6 Operator's Manual page 135

Hydraulics
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 first pump is used to supply fluid for the
steering and boom cylinders.
• The second pump is used to supply fluid for the
spray pump.
After fluid leaves the front hydraulic pump it travels
through a priority valve. This valve gives priority
to the steering system to ensure that the steering
orbital (attached at the CF connection) always
receives sufficient oil flow. When the steering system
has received sufficient flow, the priority valve begins
to enable fluid to travel to the rear hydraulic circuit
that control boom functions. This flow is determined
by the load sense line from the steering orbital.
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.
G4.7, G5, G6 Crop Cruiser Operator's Manual MY19 - REV 0
Steering Orbital
The steering orbital is located under the front of the
cabin. This supplies oil flow to the steering cylinder
when directed by the steering wheel.
PORT DESCRIPTION
P Pressure supply
R & L Supply and return to steering cylinders
LS Load sense to priority valve
T Return to reservoir
Above: Steering orbital mounted under cabin.
Pressure Filters
After fluid leaves the hydraulic pumps, it travels
through to the pressure filters. The pressure filters
are used to filter the oil before it is pumped through
the system. When a filter becomes blocked, the
indicator on the top of the filter will change from
green to red. When this occurs, the filter should be
replaced immediately. The pressure filters should be
replaced every 500 hours.
NOTE: See 'Recommended Lubricants' section at
beginning of this chapter for lubricant specifications.
Above: The pressure filters are located under the
cab in the left hand chassis rail.
Chapter 10 - Lubrication & Maintenance - 131
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