TM 5-4310-375-14
CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTIONS
Section I. TROUBLESHOOTING
Introduction. This section contains those checks and corrective actions which will isolate defects which can be
5-1.
corrected by performance of maintenance allocated to direct support and general support maintenance technicians by
the MAC, Appendix B.
5-2.
Troubleshooting table. Table 5-1 lists Malfunction, Test or Inspection, and Corrective Actions. The table is based
on symptoms which may have been observed during PMCS. Only checks and corrective actions authorized for direct sup
port and general support maintenance are listed. (Operator/Crew troubleshooting is found in table 3-2 and Organizational
troubleshooting is found in table 4-3.)
Table 5-1. Direct Support and General Support Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ELECTRIC MOTOR FAILS TO START OR FAILS TO RUN.
Step 1. Check motor leads for proper connection in control box assembly. If leads are connected properly, pro-
ceed to Step 2. If leads are not connected properly, repair as follows:
Electricity is dangerous. Before performing any maintenance or adjustments,
be sure the electrical power is turned off. Never depend on the ON-OFF
switch. Turn power off at the source.
a.
Turn OFF main power source.
b.
Loosen the two control box cover screws and open control box cover.
c.
Check name plate on motor to determine correct lead connections to starter. Also, refer to figure 1-2
for wiring diagram.
d.
Refer to figure 1-2 and connect motor leads to correct starter terminals.
e.
Close control box cover and secure by tightening the two cover clamp screws.
f.
Turn ON main power source.
Step 2. Check for a defective pressure switch.
Refer to para 5-6 for adjustment, repair, or replacement, as required.
Step 3. Check magnetic starter switch and on-off switch for defects.
5-1
