TM 5-4930-244-14
4-48. HEATER MOUNTING ASSEMBLY - REPLACE.
This Task Covers:
a. Removal
b. Installation
Initial Setup:
Tools Required
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Equipment Condition
Unit shut down and cool
Heater removed (para. 4-43).
Tool box removed (para 4-22).
Fuel Tank removed (para. 4-21).
a. Removal. (Refer to Figure 4-48).
(1)
Loosen three clamps (1) on heater plenum (2) and remove heater ducts (3) (2) Remove three bolts (4), washers
(5), and nuts (6) on heater plenum (2). Remove ground wire (7).
(3)
Remove four screws (8) and cover (9) from power distribution block (10) located on heater stand (11).
(4)
Remove positive cable (12) from power distribution block (10) Remove two self-tapping screws (13) holding
power distribution block (10) to heater stand (11). Set power distribution block (10) aside with wires (14)
attached.
(5)
Remove two locknuts (15) from bottom of skid (16) Remove two bolts (17), two washers (18) from heater stand
(11). Remove heater stand (11) from skid (16).
b. Installation.
(1)
Align heater stand (11) holes to holes in skid (16) and install two bolts (17), two washers (18) through skid (16).
Install locknut (15) from bottom of skid (16).
(2)
Align heater plenum (2) and install three bolts (4), three washers (5) through plenum (2) and heater stand (11).
Install two locknuts (6) from the bottom of heater stand (11). Install ground wire (7) and locknut (6) to remaining
corner, as indicated.
(3)
Install clamps (1) on three heater ducts (3). Install ducts onto heater plenum (2). Tighten three clamps (1).
(4)
Install positive cable (12) onto power distribution block (10), located on heater mount bracket (11). Install power
distribution block (10) to heater stand (11) and fasten it using two self-tapping screws (13).
(5)
Reconnect six wires (14) to power distribution block (10). Replace cover (9) and fasten with four screws (8).
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