HYDRAULIC SYSTEM

TM 9-2320-269-34-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

HYDRAULIC SYSTEM

27. DERRICK WILL NOT RAISE OR HOLD LOAD

Step 1.

Test main hydraulic pressure (TM 9-2320-269-20-2).

If pressure is low, see LOW OR NO PRESSURE (page 2-44).

Step 2.

Test derrick controls (1).

See step 3 of WINCH CONTROLS DO NOT OPERATE (page 2-40).

Step 3.

Inspect elevation cylinder (2).

Remove elevation cylinder (2) (TM 9-2320-269-20-2), disassemble,

and inspect. Repair or replace as needed, and install (page 2-1591).

28. DERRICK WILL NOT LOWER

See DERRICK WILL NOT RAISE OR HOLD LOAD (above).

29. OUTRIGGERS OPERATE IMPROPERLY - JERKY, WILL NOT HOLD, OR NOT AT ALL

Step 1.

Test main hydraulic pressure (TM 9-2320-269-20).

If pressure is low, see LOW OR NO PRESSURE (page 2-44).

Step 2.

Test outrigger controls (3).

See step 3 of WINCH CONTROLS DO NOT OPERATE (page 2-40).

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