TM 10-4320-307-24
Chapter 3
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
INTRODUCTION
This chapter contains the following frequently used maintenance information:
a.
Troubleshooting
b.
Maintenance procedures
The symptom index on page 3-1 is a guide to the troubleshooting information. There is also an index to the maintenance
procedures on page 3-4.
Section
Title
Page
Section I
Troubleshooting .....................................................................................................................
3-1
Section II
Maintenance Procedures .................................................................. ....................................
3-4
Section I. TROUBLESHOOTING
3-1
TROUBLESHOOTING.
a.
Table 3-1 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 sys-
tem 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 or 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 direct support maintenance are
listed. For troubleshooting procedures
within the scope of operator/crew maintenance, refer to TM 10-4320-307-10. For troubleshooting procedures
within the scope of unit maintenance, refer to Table 2-2.
3-2
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 pumping assembly. The Symptom Index lists the first page of
trouble- shooting 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 at low speed
3-2
2
Engine starts but runs unevenly, stalls, or surges
3-2
3
Engine stops running or produces black, white, or grey smoke
3-2
4
Engine consumes excessive lube oil
3-3
5
Engine oil pressure is low
3-3
6
Pump does not discharge or has low discharge pressure
3-3
7
Pump makes excessive noise
3-3
3-1
