TM 9-2330-238-14
4-73. HEATER REPLACEMENT (Con’t).
3.
Remove heater (1), plate (9), and gasket (10) from top of heater duct assembly (11). Discard gasket.
4.
Remove two setscrews (5), four screws (4), and heater cover assembly (8) from heater duct assembly (11).
5.
Remove four screws (7) and two sheet spring nuts (6).
b.
INSTALLATION (M313)
1.
Position two sheet spring nuts (6) on heater duct assembly (11) and secure with four screws (7).
2.
Install heater cover assembly (8) on heater duct assembly (11) and secure with four screws (4) and two
setscrews (5).
3.
Position heater (1), plate (9), and gasket (10) in place on heater duct assembly (11).
4.
Secure heater (1) to heater duct assembly (11) with four bolts (2) and new Iockwashers (3).
5.
Connect all electrical leads to heater (1).
c. REMOVAL (M447, M447C, AND M750)
1.
Disconnect all electrical leads to heater (12).
2.
Remove four bolts (13), Iockwashers (19), and self-locking nuts (20) from heater (12) and deflector assembly
(14). Discard Iockwashers and self-locking nuts.
TA702054
4-182
