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Malfunction
Test or Inspection
Corrective Action
TM 9-2320-304-14&P
5-6
Direct Support and General Support Maintenance (Cont)
5-7. DIRECT/GENERAL SUPPORT TROUBLESHOOTING PROCEDURES (CONT).
Table 5-2. Direct Support/General Support Troubleshooting (CONT)
LOAD HANDLING SYSTEM (LHS)
1. LOSS OF HOOK ARM SAFE LOWERING (CONT).
WARNING
Do not get under LHS when disconnecting or connecting connectors and hoses. A hydraulic
malfunction could cause LHS to lower causing serious injury or death.
CAUTION
Do not scratch surface of cylinder rod. Damage to cylinder seals could result causing
cylinder failure.
NOTE
Both hook arm safe lowering solenoid valves are tested the same way. Both hook arm
manifold safe lowering solenoid valves must be tested. Right side is shown.
Step 2. Remove safe lowering solenoid valve from port VA on RH hook arm manifold. Push poppet
into valve toward solenoid coil.
If poppet does not move, replace safe lowering solenoid valve (Para 5-36).
Step 3. With engine switch ON, push hook arm safe lowering button, and check for proper
electrical operation of the safe lowering solenoid valve in port VA on RH hook arm manifold.
If poppet does not move, replace safe lowering solenoid valve (Para 5-36).
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