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 1277 of 1393

INSTALLATION

1.

Slide engine coolant heater harness (Figure 2, Item 3) through grommet (Figure 2, Item 4) in firewall

(Figure

2,

Item

2) and grommet (Figure 2, Item 10) in toolbox (Figure 2, Item 11) and connect to control box

(Figure

2,

Item

1).

2.

Install tiedown strap (Figure 2, Item 5) on engine coolant heater harness (Figure 2, Item 3).

3.

Install engine coolant heater harness (Figure 2, Item 3) on bracket (Figure 2, Item 9) with clamp

(Figure

2,

Item

8), screw (Figure 2, Item 7), and nut (Figure 2, Item 6).

4.

Connect engine coolant heater harness (Figure 2, Item 3) to engine coolant heater (Figure 2, Item 22).

5.

Install wire (Figure 2, Item 17) on terminal stud (Figure 2, Item 16) with lockwasher (Figure 2, Item 20) and nut

(Figure 2, Item 18).

6.

Install ground wire (Figure 2, Item 21) on terminal stud (Figure 2, Item 15) with lockwasher (Figure 2, Item 14)

and nut (Figure 2, Item 13).

7.

Close toolbox door (Figure 2, Item 12).

TM 9-2320-272-23-4

0755

0755-4