TM 9-2320-260-34-2
17-22. PERSONNEL HEATER OVERHEAT SWITCH REPLACEMENT
THIS TASK COVERS:
b. Installation
a. Removal
INITIAL SETUP
MATERIALS/PARTS
APPLICABLE MODELS
Two nut-assembled Iockwashers
All
TEST EQUIPMENT
Two screw-assembled Iockwashers
Multimeter (Appendix B, Item 115)
TOOLS
REFERENCES (TM)
General mechanic's tool kit
TM 9-2320-260-20
TM 9-2320-260-34P-2
(Appendix B, Item 1)
Tool kit, electrical (Appendix B, Item 106)
EQUIPMENT CONDITION
Personnel heater removed (TM 9-2320-260-20).
NOTE
q The overheat switch is removed basically the same for early and
late model heaters. This procedure is for early model heaters.
q Tag wires for installation.
1.
Remove flame detector switch (para. 17-15).
2.
Remove nut-assembled lockwashers (1) and shutoff valve lead (2) from overheat switch (8). Discard
nut-assembled lockwashers (1).
3.
Remove nut-assembled lockwashers (9), receptacle lead (3), thermostat lead (4), and ignition control
lead (5) from overheat switch (8). Discard nut-assembled lockwasher (9).
4.
Remove two screw-assembled lockwashers (7) and overheat switch (8) from heater housing (6).
Discard screw-assembled lockwashers (7).
1. Install overheat switch (8) on heater housing (6) with two new screw-assembled lockwashers (7).
2. Install ignition control lead (5), thermostat lead (4), and receptacle lead (3) on overheat
switch (8) with new nut-assembled lockwasher (9).
3. Install shutoff valve lead (2) on overheat switch (8) with new nut-assembled lock washer (l).
4. Install flame detector switch (para. 17-15).
17-60
