TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
59.
UNABLE TO MOVE HOIST MOTOR CONTROL VALVE SPOOL IN OR OUT
Step 1. Dirt in valve.
a.
Clean and flush out valve assembly.
Step 2. Spool cap full of oil.
a.
Replace seals. (Refer to page 15-60.)
Step 3. Bind in linkage.
a.
Free linkage.
60.
POOR HYDRAULIC SYSTEM PERFORMANCE OR FAILURE
Step 1. Defective three-section hydraulic pump.
a. Check pump output (50 GPM at 2400 RPM). If OK, do Step 2.
b.
Repair or replace pump. (Refer to page 13-12.)
Step 2. Worn hoist motor.
a.
Repair or replace damaged components. (Refer to page 15-54.)
61.
EXTERNAL HOIST MOTOR LEAKAGE
Step 1. Seal failure.
a.
Replace seal. (Refer to page 15-50.)
Step 2. Defective casting.
a.
Replace casting. (Refer to page 15-54.)
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