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 1237 of 1393

INSTALLATION
CAUTION
During installation of personnel water heater, do not twist or bend elbows. They are welded
and may be damaged.
1.
Position personnel hot water heater (Figure 2, Item 21) on diverter duct (Figure 2, Item 9) and right mounting
bracket (Figure 2, Item 11).
2.
Install left mounting bracket (Figure 2, Item 20) on firewall (Figure 2, Item 8) with two washers
(Figure 2, Item 16) and screws (Figure 2, Item 17).
3.
Install forward and rear supports (Figure 2, Item 18) and (Figure 2, Item 14) on personnel hot water heater
(Figure 2, Item 21) with four washers (Figure 2, Item 22) and screws (Figure 2, Item 23).
4.
Install forward and rear supports (Figure 2, Item 18) and (Figure 2, Item 14) on left mounting bracket
(Figure 2, Item 20) and right mounting bracket (Figure 2, Item 11) with washer (Figure 2, Item 15), screw
(Figure 2, Item 12), washer (Figure 2, Item 15), nut (Figure 2, Item 24), washer (Figure 2, Item 13), screw
(Figure 2, Item 10), washer (Figure 2, Item 13), and nut (Figure 2, Item 19).
5.
Install heater blower motor (Figure 2, Item 29) on personnel hot water heater (Figure 2, Item 21) with four
washers (Figure 2, Item 28) and screws (Figure 2, Item 27).
6.
Install fan/impeller (Figure 2, Item 32) on heater blower motor (Figure 2, Item 29) with setscrew
(Figure 2, Item 33).
7.
Connect lead (Figure 2, Item 25) to heater blower motor lead (Figure 2, Item 26).
8.
Install canister (Figure 2, Item 1) on personnel hot water heater (Figure 2, Item 21) with four washers
(Figure 2, Item 34) and screws (Figure 2, Item 35).
9.
Install clip (Figure 2, Item 31) and fresh air control cable (Figure 2, Item 5) on fresh air shutoff rod
(Figure 2, Item 2) with cotter pin (Figure 2, Item 30).
10.
Install clamp bracket (Figure 2, Item 4) and fresh air control cable (Figure 2, Item 5) on bracket
(Figure 2, Item 6) with screw (Figure 2, Item 3) and spring nut (Figure 2, Item 7).
TM 9-2320-272-23-4
0747
0747-4


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