TM 10-4320-344-24
SECTION IV. TROUBLESHOOTING
2.10 TROUBLESHOOTING.
2.10.1 General:
The malfunction index lists malfunctions that may be observed by
unit level maintenance.
The malfunctions are then cross-referenced to the
troubleshooting table 2-4.
Table 2-4 contains information useful in diagnosing and
correcting unsatisfactory operation of the pumping assembly which may be encountered
during operation or maintenance of the pumping assembly or its components.
Use the
malfunction index to locate specific troubleshooting procedures contained in
table 2-4.
After locating the listed malfunction, perform the test/inspections and
corrective actions in the order listed in table 2-4.
The malfunction index and
Table 2-4 cannot list all the malfunctions that may occur, all the test and
inspections needed to find the fault, or all the corrective actions needed to
c o r r e c t t h e f a u l t .
If the equipment malfunction is not listed or actions listed do
not correct the fault, notify your supervisor.
2.10.2 References.
When paragraphs are referenced in table 2-4 (for example,
paragraph 2.10/2.15/2.27), the paragraph number at the left of the slash, /, refers
to Pumping Assembly 609-A, the number between the slashes refers to Pumping Assembly
609-C, and the number to the right of the slash refers to Pumping Assembly
US636HCCD-1.
MALFUNCTION INDEX
Malfunction Number
in Table 2-4
Engine will not crank. . . . . . . . . . . . . . . . . . . . . . . . . . 1
Engine cranks, but will not start. . . . . . . . . . . . . . . . . . . . 2
Engine stops suddenly. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Engine oil pressure too low . . . . . . . . . . . . . . . . . . . . . . . 4
Ammeter reading too low . . . . . . . . . . . . . . . . . . . . . . . . . 5
Engine smokes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Engine knocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Engine overheats (Model 609-A)
Engine overheats (Models 609-C and US636HCCD-1) . . . . . . . . . . . . . 9
Table 2-4.
Unit Troubleshooting Table.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE HILL NOT CRANK.
Step 1.
Check for loose or corroded terminals on battery, starter, start alarm
relay (Model 609-A), and start pilot relay (Model 609-C) and broken or
frayed battery cables.
Clean and tighten terminals.
Step 2.
Check for broken or frayed wires between voltage regulator and
alternator (Models 609-A and US636HCCD-1) and generator capacitor and
alternator (Model 609-C).
a .
Repair wires as necessary.
b .
Replace generator capacitor (paragraph 2.21.15) (Model 609-C).
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