Repair manual

Troubleshooting the Steering System RD 27
wc_tx001223gb.fm 84
Continued from the previous page.
7. Reconnect the hose to the steering servo.
8. Disconnect the two hoses (e) from the steering cylinder (h). Access the steering
cylinder from underneath the frame.
9. Cap the two hoses and the fittings on the steering cylinder.
10.Connect the 207 bar (3000 psi) pressure gauge (f) to the test port (g) of the
steering pump.
11.Start the engine and check the pressure. The pressure should measure:
 Approximately 30–38 bar (435–550 psi) when not turning the steering wheel
 Approximately 124–150 bar (1800–2200 psi) when steering wheel is turned as
far as possible
Are the above pressures measured?
12.Stop the engine.
Result The steering system has been diagnosed. Reassemble the machine.
Yes ____ No ____
The steering cylinder has failed; replace it. The steering servo has failed; replace it.