TM-9-2320-272-23-4

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 4 OF 5

SEPTEMBER 2012
TM-9-2320-272-23-4

  TM-9-2320-272-23-4 - Page 1331 of 1393

REMOVAL
1.
Remove locknut (Figure 1, Item 28), washer (Figure 1, Item 27), screw (Figure 1, Item 25), washer
(Figure
1,
Item
27), lockwasher (Figure 1, Item 26), and ground wire (Figure 1, Item 19) from mounting bracket
(Figure
1,
Item
16) and angle bracket (Figure 1, Item 14). Discard lockwasher and locknut.
NOTE
Note routing of wiring harness and leads for installation.
2.
Disconnect heater harness connector (Figure 1, Item 22) from personnel heater (Figure 1, Item 15) and push
harness connector (Figure 1, Item 22) into cab through grommet (Figure 1, Item 23).
3.
Remove grommet (Figure 1, Item 23) from firewall knockout (Figure 1, Item 17) and fuel pump lead
(Figure
1,
Item
10).
4.
Remove four tiedown straps (Figure 1, Item 11) from fuel pump lead (Figure 1, Item 10) and front harness
(Figure 1, Item 13) on engine compartment firewall (Figure 1, Item 24). Discard tiedown straps.
5.
Disconnect leads (Figure 1, Items 10 and 21) from connector (Figure 1, Item 20) on cab (Figure 1, Item 18)
and push lead (Figure 1, Item 10) through firewall (Figure 1, Item 24) into engine compartment.
6.
Remove three tiedown straps (Figure 1, Item 30) from fuel pump fuel lines (Figure 1, Item 31).
Discard
tiedown
straps.
7.
Disconnect leads (Figure 1, Items 29 and 10) from fuel pump (Figure 1, Item 32).
8.
Disconnect heater harness (Figure 1, Item 6) and lead (Figure 1, Item 8) from heater control box
(Figure
1,
Item
5) and lead (Figure 1, Item 7).
9.
Disconnect lead (Figure 1, Item 9) from lead (Figure 1, Item 12) of wiring harness (Figure 1, Item 2).
10.
Remove four tiedown straps (Figure 1, Item 1) from heater harness (Figure 1, Item 6) on cab
(Figure
1,
Item
18). Discard tiedown straps.
11.
Disconnect wire (Figure 1, Item 4) from pin A of battery switch (Figure 1, Item 3) and remove wiring harness
(Figure 1, Item 2) from cab (Figure 1, Item 18).
12.
Remove heater harness (Figure 1, Item 6) from cab (Figure 1, Item 18).
TM 9-2320-272-23-4
0764
0764-2


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