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TM 5-4320-308-13
Section V. TROUBLESHOOTING
3-9. TROUBLESHOOTING
a.
Table 3-2 contains troubleshooting information for locating and correcting most of the operating troubles which
are the responsibility of unit 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 unit maintenance are listed.
3-10. 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 pump. The Symptom Index lists the first page of troubleshooting information for that
malfunction. Follow the steps one by one, and perform the corrective actions listed.
Malfunction
Number
Description
Page
1
Engine hard to crank
3-25
2
Engine cranks but fails to start
3-25
3
Engine runs unsteadily and power output is low
3-27
4
Dense smoke from exhaust after warmup
3-27
5
Engine overheats
3-27
6
Pump makes excessive noise
3-28
7
Pump output low
3-29
8
Lack of power
3-29
9
Engine stops running
3-30
10
Excessive lubricating oil consumption
3-31
11
Pump fails to prime
3-31
12
Noisy pump operation
3-31
13
Low discharge pressure
3-31
3-24
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