TM 5-3805-261-34Section I. STEERING TROUBLESHOOTING.8-1.GENERAL INFORMATION.This section lists the common steering malfunctions which may occur during theoperation of the 130G Grader. You should perform the tests, inspections and corrective actions in the order listed. Followthe troubleshooting procedures listed below step-by-step until you can go no further.8-2.STEERING TROUBLESHOOTING PROCEDURES.This section cannot list all possible malfunctions, nor can itlist all possible tests, inspections or corrective actions. If a malfunction is not listed, contact your supervisor.STEERING TROUBLESHOOTING AND MAINTENANCE PROCEDURES.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONa.WHEELS TURN SLOWLY OR NOT AT ALL WHEN STEERING WHEEL IS TURNED.Step 1.Check steering pressure reducing valve. Reducing valve is part of steering combinationvalve. Vent hydraulic system. Refer to LO 5-3805-261-12. Remove plug and preformedpacking from reducing valve (Figure 8-1). Install multi-range pressure gage. Start engineand operate all implements to raise temperature of hydraulic oil to 145 to 150 degrees F.Refer to TM 5-3805-261-10. Increase engine speed to 1500 rpm. Pressure gage shouldread 1800 to 1850 psi. Stop engine.Figure 8-1.If pressure is within limits, go to Step 2. To change pressure, add or remove shim(s) as required (Figure 8-1).One shim will change pressure approximately 25 psi. Refer to paragraph 8-7.8-2
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