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 1241 of 1393

REMOVAL

1.

Disconnect heater harness (Figure 1, Item 3) from engine coolant heater (Figure 1, Item 2).

NOTE

•

Have drainage container ready to catch excess fuel.

•

Use drain pans to retain leaking/draining fluids. Refer to local procedures and plans for

preventing and responding to fluid spills or leaks. Comply with local regulations when

disposing of clean up material and leaked and spilled fluids.

2.

Disconnect fuel line (Figure 1, Item 8) and elbow (Figure 1, Item 9) from engine coolant heater

(Figure 1, Item 2).

3.

Disconnect hose (Figure 1, Item 7), adapter (Figure 1, Item 6), elbow (Figure 1, Item 5), union

(Figure 1, Item 4), and nipple (Figure 1, Item 10) from engine coolant heater (Figure 1, Item 2).

4.

Remove cotter pin (Figure 1, Item 19) and exhaust tube (Figure 1, Item 18) from engine coolant heater

(Figure 1, Item 2). Discard cotter pin.

5.

Remove hose (Figure 1, Item 13), adapter (Figure 1, Item 15), and elbow (Figure 1, Item 16) from engine

coolant heater (Figure 1, Item 2).

6.

Remove two clamps (Figure 1, Item 11) from engine coolant heater (Figure 1, Item 2).

7.

Remove engine coolant heater (Figure 1, Item 2) from bracket (Figure 1, Item 12).

8.

Remove four locknuts (Figure 1, Item 17) and screws (Figure 1, Item 14) from bracket (Figure 1, Item 12).

Discard locknuts.

9.

Remove bracket (Figure 1, Item 12) from toolbox (Figure 1, Item 1).

TM 9-2320-272-23-4

0748

0748-2