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 - Page 1269 of 1393
REMOVAL
1.
Open toolbox door (Figure 1, Item 9).
2.
Disconnect engine coolant heater harness (Figure 1, Item 2) from engine coolant heater (Figure 1, Item 20).
3.
Remove nut (Figure 1, Item 10), lockwasher (Figure 1, Item 11), and ground wire (Figure 1, Item 12) from
terminal stud (Figure 1, Item 13) on heater pump (Figure 1, Item 18). Discard lockwasher.
4.
Remove nut (Figure 1, Item 17), lockwasher (Figure 1, Item 16), and ground wire (Figure 1, Item 15) from
terminal stud (Figure 1, Item 14) on heater pump (Figure 1, Item 18). Discard lockwasher.
5.
Remove ten tiedown straps (Figure 1, Item 5) from engine coolant heater harness (Figure 1, Item 2), fuel pump
cable (Figure 1, Item 6), hose (Figure 1, Item 7), and lead (Figure 1, Item 22). Discard tiedown straps.
6.
Disconnect lead (Figure 1, Item 22) from engine coolant heater harness lead (Figure 1, Item 4).
7.
Disconnect engine coolant heater harness (Figure 1, Item 2) from control box (Figure 1, Item 1), slide through
grommet (Figure 1, Item 3) in firewall (Figure 1, Item 21) and grommet (Figure 1, Item 8) in toolbox
(Figure
1,
Item
19), and remove from vehicle.
TM 9-2320-272-23-4
0754
0754-2
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