Goldacres Crop Cruiser G6 Operator's Manual page 117

Hydraulic Yaw Suspension
4. Open the hydraulic yaw charge ball valves.
5. Identify the pressure reducing valve.
6. Loosen the adjustment lock nut and turn the set
screw counter clockwise 3 rotations.
7. This will generate minimum hydraulic oil pressure
in the sprayer hydraulic circuit.
8. With the hydraulic circuit engaged turn the set
screw IN (clockwise) until the hydraulic yaw
pressure gauges indicate 100 bar (1500 PSI). If the
pressure is exceeded the closed loop circuit must
be "cracked" to bleed off any excess pressure. The
Tilt Out can be used to generate pressure in the
hydraulic system.
CAUTION: Take care when working with hydraulic
oil under pressure. Ensure that excess oil is drained
into a container.
G4.7, G5, G6 Crop Cruiser Operator's Manual MY19 - REV 0
9. Once the set screw is set to the correct pressure,
tighten the lock nut. Ensure that the set screw is
held firmly in position to prevent the pressure
fluctuating.
10. When the pressure is set correctly, charge
the circuit as described in next section 'System
Charging'.
System Charging
1. Park the machine on a flat level surface, engage
the park brake and chock the sprayer wheels.
2. Open the boom into the working position and
lower to the minimum working height.
3. Isolate the boom lift cylinders by rotating the
Paralift cylinder valves to the off position.
4. Open the hydraulic yaw charge ball valves.
5. Activate the boom lift circuit and maintain
constant pressure for 30-60 seconds. This will
generate maximum hydraulic oil pressure in the
sprayer hydraulic circuit.
NOTE: The pressure reducing valve in the circuit
limits the main hydraulic pressure to 100 bar (1500
PSI) entering the hydraulic circuit.
6. After 30-60 seconds release the lift circuit and
isolate the hydraulic yaw charge ball valves by
rotating them to OFF position. The pressure
gauges in the hydraulic yaw circuit should be
reading 100 bar (1500 PSI).
7. Ensure that the boom is sitting level or aligned
correctly. If one side of the yaw is sitting forward
of the other OPEN the charge ball valve and
push the boom around to align it and even the
cylinders out, once aligned CLOSE the charge ball
valves. Check the pressure gauges are still at 100
bar (1500 PSI).
Chapter 9 - Boom - 113