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 TM 55-1905-223-24-2
Table 2-2. Unit Maintenance Troubleshooting-CONT
Malfunction
Test or Inspection
Corrective Action
STEP 7. Check to see if suction line is leaking.
Replace suction line (see para. 2-17).
STEP 8. Check to see if suction line is blocked.
Clean suction line (see para. 2-17).
3.
Using/losing oil.
STEP 1. Check piping system connections.
Secure connections. Replace connections or piping as necessary.
STEP 2. Check to see if oil drain screw will not seal.
Fit oil drain screw with new seal and secure.
STEP 3. Check inspection covers.
Clean mating surfaces with solvent (Item 4, Appendix C) and reseal.
4.
Vibration.
STEP 1. Check for loose exterior plumbing connectors.
Secure connectors.
STEP 2. Check for loose mounting bolts.
Tighten. Torque to 350 ft-lb.
5.
Clutch is slipping or not engaging.
STEP 1. Check for blocked filter.
Change filter cartridge (PMCS, Item 6).
STEP 2. Check pressure-limiting valve for normal wear, dirt, or blockage.
Adjust operating pressure (see TM 55-1905-223-10) or replace valve (para. 2-14).
6.
Clutch does not disengage.
STEP 1. Check control valve.
Adjust neutral position, and check control system and operating pressure (see TM 55-1905-223-10).
STEP 2. Check to see if oil is unsuitable.
Check viscosity of oil. Change oil if necessary (PMCS, Item 9).
2-11
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