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 TM 55-1905-221-14-1
Table 4-1. Troubleshooting (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Check for restriction in lines.
Clean lines.
Step 3. Check for air in system, low oil level.
Bleed air from system. Correct air leak and refill.
Step 4. Check overcenter valve or counterbalance.
Adjust or replace valve (para 4-18 or para 4-22).
24. WHEEL TURNS BUT RUDDER DOES NOT.
Step 1. Check for ruptured line.
Replace ruptured line.
Step 2. Check for air in system.
Bleed air from system. Correct air leaks and refill.
25. NOISY OPERATION OF PUMPS.
Check for air in system.
Bleed air from system. Correct air leak and refill (para 4-18).
26. OIL TOO HOT.
Step 1. Check pump discharge valves are set properly.
One discharge valve should be open and the other closed.
Step 2. Check action of flow control valve.
Notify your supervisor if flow control valve is not functioning correctly.
4-15
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