TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
62.
LEAKAGE AT HOIST MOTOR FITTINGS
Step 1. Cracked casting.
a.
Step 2. Defective threads.
a.
Step 3. Damaged preformed packings.
a.
Step 4. Burrs on casting or fittings.
a.
Stone or file to remove burrs.
63.
LOSS OF HOIST SPEED UNDER LOAD
Step 1. Low hoist motor inlet pressure.
a.
Check pressure (2700 + 100 PSI at 2400 RPM).
b.
Adjust hoist relief valve. (Refer to TM 5-3810-306-20.)
Step 2. Excessive back-pressure at hoist motor outlet.
a.
Check pressure (50 + 5 PSI) increase line size.
Step 3. Scored port plate or end cap.
a.
Relap to remove scored surfaces.
64.
POOR HOIST SPEED CONTROL
Step 1. Worn cam ring assembly.
a.
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