Steering System Pressure Testing
1 Park the machine on level ground, engage the parking
brake and set the transmission to neutral. Lower the
attachments to the ground. Stop the engine and
remove the starter key.
2 Turn the steering wheel to the left and to the right
several times to vent system pressure.
!!
WARNING
Make the machine safe before working underneath it.
Park the machine on level ground, lower the arms. Apply
the parking brake, put the transmission in neutral and
stop the engine. Chock both sides of all four wheels.
Disconnect the battery, to prevent the engine being
started while you are beneath the machine.
GEN-1-2
3 Connect a 0-400 bar (0-6000 lbf/in
2
) pressure gauge to
test adaptor A.
Note: The pressure test point for the steering circuit is fitted
next to the priority valve as shown.
4 Run the engine at 1500 revs/min and turn the steering
to full lock. Check the gauge reading which should
equal the relief valve pressure, refer to Technical Data.
Note: The steering wheel must be held on full lock whilst the
gauge reading is being checked.
5 If necessary, adjust the pressure setting by removing
plug B, on the orbitrol steering unit.
6 Adjust screw C using an 'allen key' until the correct
pressure is shown on the gauge.
Note: Detail X shows a relief valve which has a 4 mm
hexagon adjusting screw. Detail Y shows a valve which has
a 6 mm hexagon adjusting screw.
7 Refit plug B.
20 - 2
Section H Steering
9803/7130
Section H
20 - 2
Issue 1
Service Procedures
S212750
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