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 TM 55-1905-223-24-10
Table 4-1. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
1. Winch will not rotate or rotates slowly.
Step 1. Check for faulty directional control valve. Replace valve (para. 4-11).
Step 2. Check for faulty directional valve. Replace valve (para. 4-11).
Step 3. Check for faulty relief valve. Replace valve (para. 2-17).
Step 4.
Check for gear reducer defective as indicated by grinding noises.
Replace defective gear reducer
Step 5. Check for winch shaft binding in shaft mounting bearing as indicated by excessive heat or grinding noise.
Replace defective winch (paragraph 4-12).
2. Emergency handcrank will not rotate clockwise.
Step 1. Check for insufficient hydraulic fluid in hydraulic brake. Insert handle in brake release pump and operate
pump until brake is released. Turn handle clockwise until hydraulic pressure is restored to hydraulic motor
3. Excessive temperature in hydraulic system.
Step 1. Check for air in hydraulic fluid. Replace defective shaft seal in hydraulic pump (paragraph 4-10).
Section V. INTERMEDIATE GENERAL SUPPORT MAINTENANCE PROCEDURES
4-7. Repair of Bow Ramp Assembly. Repair actions for the bow ramp assembly are those repair actions described on
the individual components, paragraphs 4-8 through 4-26. Principles of operation that describe the bow ramp assembly
are provided in Chapter 1, Section III. There are no separate procedures included for equipment for which repair parts
are not stocked.
4-3
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