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 1275 of 1393

REMOVAL

1.

Open toolbox door (Figure 1, Item 12).

2.

Disconnect engine coolant heater harness (Figure 1, Item 3) from engine coolant heater (Figure 1, Item 22).

3.

Remove nut (Figure 1, Item 13), lockwasher (Figure 1, Item 14), and ground wire (Figure 1, Item 21) from

terminal stud (Figure 1, Item 15) on heater pump (Figure 1, Item 19). Discard lockwasher.

4.

Remove nut (Figure 1, Item 18), lockwasher (Figure 1, Item 20), and wire (Figure 1, Item 17) from terminal

stud (Figure 1, Item 16) on heater pump (Figure 1, Item 19). Discard lockwasher.

5.

Remove screw (Figure 1, Item 7), nut (Figure 1, Item 6), and clamp (Figure 1, Item 8) from bracket

(Figure

1,

Item

9).

6.

Remove tiedown strap (Figure 1, Item 5) from engine coolant heater harness (Figure 1, Item 3).

Discard

tiedown

strap.

7.

Disconnect engine coolant heater harness (Figure 1, Item 3) from control box (Figure 1, Item 1) and slide

harness through grommet (Figure 1, Item 4) in firewall (Figure 1, Item 2) and grommet (Figure

1,

Item

10) in

toolbox (Figure 1, Item 11).

TM 9-2320-272-23-4

0755

0755-2