TM 5-3805-261-20
Section I. HYDRAULIC SYSTEM TROUBLESHOOTING.
15-1.
GENERAL INFORMATION. This section lists the common hydraulic system malfunctions which may occur during
the operation of the 130G Grader. You should perform the tests, inspections and corrective actions in the order listed.
Follow the troubleshooting procedures listed below step-by-step until you can go no further.
15-2.
HYDRAULIC SYSTEM TROUBLESHOOTING PROCEDURES. This section cannot list all possible malfunctions,
nor can it list all possible tests, inspections or corrective actions. If a malfunction is not listed, contact your supervisor.
HYDRAULIC SYSTEM TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a.
ALL IMPLEMENTS FAIL TO OPERATE OR OPERATE SLOWLY.
Step 1.
Check the hydraulic hoses for leaks and loose fittings. Apply soap and water solution over length of
hoses and observe.
If a hydraulic hose fitting is loose--tighten. If a hose is damaged or defective--replace. Refer to paragraphs
15-22 through 15-33.
Step 2.
Check the hydraulic filters.
If the filters are clogged, damaged or defective--replace. Refer to paragraph 15-35.
Step 3.
Check the hydraulic pump assembly.
If the hydraulic pump assembly is damaged or defective--replace. Refer to paragraph 15-5.
If the problem has not been identified, a flow meter tee test should be performed. Contact Direct Support.
15-3
