TM 5-3810-306-20
TABLE 3-1. ORGANIZATIONAL TROUBLESHOOTING (CONTD)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Restriction in hydraulic return hose.
a. Remove and check hose for obstruction. If OK, do Step
4.
b. Replace hydraulic return hose. (Refer to pages 16-38
and 16-40.)
Step 4.
Defective hydraulic cylinder or hydraulic pump.
a. Contact Direct Support Maintenance.
45. BOOM LOWERS SLOWLY
Step 1.
Defective main hydraulic relief valve.
a. Check main hydraulic relief valve adjustment. (Refer
to page 16-54.) If OK, do Step 2.
b. Contact Direct Support Maintenance to replace main
hydraulic relief valve.
Step 2.
Control valve linkage out of adjustment.
a. Check valve linkage adjustment. If OK, do Step 3.
b. Adjust linkage to obtain full control valve spool
travel. (Refer to page 16-2.)
Step 3.
Restriction in hydraulic return hose.
a. Remove and check hose for obstruction. If OK, do Step
4.
b. Replace hydraulic return hose. (Refer to pages 16-38
and 16-40.)
Step 4.
Defective hydraulic cylinder or hydraulic pump.
a. Contact Direct Support Maintenance.
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