TM 5-3810-306-20
TABLE 3-1. ORGANIZATIONAL TROUBLESHOOTING (CONTD)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
48. ERRATIC OPERATION OF EXTENDING TELESCOPING CYLINDER
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.
Air in telescope cylinder.
a. Bleed air from hydraulic system. (Refer to page
16-52.)
Step 3.
Boom out of alignment.
a. Align boom. (Refer to page 17-9.) If OK, do Step 4.
b. If boom cannot be aligned, contact Direct Support
Maintenance.
Step 4.
Clogged, broken, or loose hydraulic lines or fittings.
a. Remove and inspect hydraulic lines. If OK, do Step 5.
b. Clean, tighten, or replace lines or fittings, as
needed. (Refer to page 16-44.)
Step 5.
Defective hydraulic control valve.
a. Remove and inspect hydraulic control valve section.
If OK, do Step 6.
b. Replace hydraulic control valve. (Refer to page
16-2.)
Step 6.
Defective telescope cylinder or bent boom.
a. Contact Direct Support Maintenance.
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