September 2016
Part No.1272857
GTH-1544
3-39
Section 3 • Repair Procedures
Manifolds
7-1
Function Manifold
How to Set the Steer Pressure
1 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to port TP1 on the function manifold
(boom and steering functions hydraulic test
port).
2 Start the engine. Allow the engine to idle.
3 Fully turn and hold the steering wheel in the
left direction and allow the wheels to fully turn
to the left. Continue holding the steering while
observing the pressure reading on the pressure
gauge.
Result: the pressure gauge reads 2610 psi
/ 180 bar. The pressure setting is correct.
Proceed to step 8.
Pressure is not within speci
fi
cation.
The pressure setting needs to be adjusted.
Proceed to step 4.
4 Turn the engine off, spot the valve on the power
steering and open the cap.
5 Adjust the internal hex socket. Turn clockwise
to increase the pressure; turn counterclockwise
to decrease the pressure.
6 Cap the valve.
7 Repeat this procedure beginning with step 2.
8 Turn the machine off. Remove the pressure
gauge from the test port.
