Gradall 534D-6T Service Manual - Manual (Page 264)

S
TEERING
C
IRCUIT
Do not hold the steering fully
turned any longer than
necessary.
5.0
STEERING FLOW DIVIDER VALVE
• SET UP
1. Install a 10,000 PSI gauge, hose and adapter to the test port in
the outlet tube of the main implement pump. Make sure you can
see the gauge from the operator’s cab.
2. With the park brake engaged and the transmission in “Neutral”,
start the material handler. Retract all cylinders and bring the boom
level.
3. Make sure there is no one behind the machine and turn the
steering wheel fully in one direction until the steering bottoms.
• CHECK
1. With the engine running at low idle (800-900 RPM), observe the
pressure gauge while holding the steering fully turned.
2. The gauge should read 2500 ± 100 PSI for all Models except the
544C-10 and 544D-10 which should read 3000 ± 100PSI.
• ADJUST
1. If adjustment is necessary, turn the steering slightly in the
opposite direction, make sure the park brake is still engaged
and the transmission in “Neutral” and stop the engine.
2. Locate the steering flow divider valve.
3. Remove the hose and the straight adapter fitting from the
reservoir port of the valve to allow access to the relief valve
socket head adjusting screw.
4. Turn the screw clockwise to increase pressure; counter-clockwise
to reduce pressure.
5. Re-connect the hose and adapter fitting to the flow divider valve
and re-test.
522, 524, 532C-6, 534C-6 and 534C-6T
MAIN IMPLEMENT TEST PORT
ALL OTHER MODELS
MAIN IMPLEMENT TEST PORT
CAUTION !
NOTE!
The location of the main
implement test port varies by
machine vintage.