TM 5-3810-306-20
TABLE 3-1. ORGANIZATIONAL TROUBLESHOOTING (CONTD)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
50. TELESCOPE CYLINDER WILL NOT EXTEND
Step 1.
Defective hydraulic relief valve.
a. Check relief valve adjustment. (Refer to page 16-54.)
If OK, do Step 2.
b. Contact Direct Support Maintenance to replace relief
valve.
Step 2.
Clogged hydraulic hose and fittings.
a. Remove and inspect hydraulic hoses and fittings. If
OK, do Step 3.
b. Replace hose or fittings. (Refer to page 16-44.)
Step 3.
Control valve linkage out of adjustment.
a. Check control valve linkage adjustment. If OK, do
Step 4.
b. Adjust linkage to obtain full control valve spool
travel. (Refer to page 16-2.)
Step 4.
Defective hydraulic control valve.
a. Remove and inspect hydraulic control valve. If OK, do
Step 5.
b. Replace control valve. (Refer to page 16-2.)
Step 5.
Defective telescope cylinder or hydraulic pump.
a. Contact Direct Support Maintenance.
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