TM 10-4320-307-24
Section V.
TROUBLESHOOTING
2-15
TROUBLESHOOTING.
a.
Table 2-3 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 test/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 cannot be corrected by listed corrective actions, notify your supervisor.
c.
Only those functions within the scope of unit maintenance are listed. For troubleshooting procedures within
the scope of operator/crew maintenance, refer to TM 10-4320-307-10.
2-16
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 pumping assembly. 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
Description
Page
Number
1
Engine fails to crank or cranks very slowly
2-30
2
Engine cranks but fails to start
2-31
3
Engine runs unsteadily and power output is low
2-31
4
Engine starts but pump suction gage or pump discharge gage does not function
2-32
5
Dense exhaust smoke after warmup
2-32
6
Engine overheats according to engine coolant temperature gage
2-33
7
Low engine oil pressure
2-34
8
Charging indicator lamp (ALTERNATOR) lights when engine is running
2-34
9
Pump makes excessive noise
2-34
10
Pump output low
2-35
11
Excessive speed increaser noise during shifting
2-35
12
Speed increaser oil leakage
2-36
13
Speed increaser does not respond to shift lever movement
2-36
14
Oil thrown from filler tube
2-36
15
Excessive pump noise
2-36
16
Excessive pump vibration.
2-36
2-29
