TM 10-4320-310-14
CHAPTER 5
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Section I. TROUBLESHOOTING
5-1. TROUBLESHOOTING
a.
Table 5-1 contains troubleshooting information for locating and correcting most of the operating troubles
which are the responsibility of direct support maintenance. Each malfunction for an individual component, unit, or
system is followed by a list of tests or inspections which will help you to determine probable causes and corrective
actions to take. Perform the tests/inspections and corrective actions in the order listed.
b.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If
a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
c.
Only those functions within the scope of direct support maintenance are listed. For troubleshooting
procedures within the scope of the operator/crew maintenance, refer to table 3-1. For troubleshooting procedures within
the scope of unit maintenance, refer to table 4-2.
5-2. SYMPTOM INDEX
Refer to the symptom Index below. Locate the malfunction which is the same, or most nearly the same, as the trouble
you are having with the centrifugal pump unit. The Symptom Index lists the first page of the troubleshooting information
for that malfunction. Follow the steps one by one, and perform the corrective actions listed.
Symptom Index
Malfunction
Number
Description
Page
1
Engine cranks but fails to start
5-2
2
Engine starts but runs unevenly, stalls, or surges
5-2
3
Engine stops running or produces black, white, or gray smoke
5-2
4
Engine consumes excessive lube oil
5-2
5-1
