TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 673 of 764
TM 9-2320-361-34
17-13.
PERSONNEL HEATER
IGNITER AND
IGNITION CONTROL UNIT
REPLACEMENT
THIS TASK COVERS:
a. Igniter Removal
c. Ignition Control Unit Installation
b. Ignition Control Unit Removal
d. Igniter Installation
INITIAL SETUP
APPLICABLE MODELS
MATERIALS/PARTS
(Contd)
All
Nut-assembled lockwasher
TEST EQUIPMENT
Multimeter (Appendix B, Item 3)
(Appendix F, Item 154)
Igniter (Appendix F, Item 86)
Two lockwashers (Appendix F, Item 122)
TOOLS
REFERENCES (TM)
General mechanic’s tool kit
(Appendix B, Item 1)
TM 9-2320-361-34P
Tool kit, electrical (Appendix B, Item 2)
EQUIPMENT CONDITION
MATERIAIS/PARTS
Personnel heater guard and blower motor removed
(para. 17-11).
Two screw-assembled lockwashers
(Appendix F, Item 169)
NOTE
Tag wires for installation.
a. Igniter Removal
1. Remove nut (6), receptacle ground lead (13), ground strap (12), and lockwasher (11) from ignition
control unit (8). Discard lockwasher (11).
2. Disconnect igniter leads (7) and (10) from ignition control unit (8) and igniter hatch cover (9).
3.
Release two fly screws (14) and remove igniter hatch cover (9) from heater housing (15).
CAUTION
Igniter is fragile. Use care when removing igniter. Failure to do
so may result in damage to equipment.
4. Press and turn igniter (18) 1/4 turn left and remove from igniter tube (17). Discard igniter (18).
5. Remove screw (16) and igniter tube (17) from heater housing (15).
I
b.
Ignition Control Unit Removal
NOTE
Remove igniter before removing ignition control unit (subtask a).
1. Remove nut-assembled lockwasher (1), thermostat lead (5), receptacle lead (4), and ignition control
lead (3) from overheat switch (2). Discard nut-assembled lockwasher (1).
2. Remove two screw-assembled lockwashers (19) and ignition control leads (20) from flame detector
switch (23). Discard screw-assembled lockwashers (19).
3. Remove three screws (21), ignition control unit (8), and lockwasher (22) from heater housing (15).
Discard lockwasher (22).
17-30
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