TM 5-4520-253-13
HEATER CASE ASSEMBLY PROCEDURES INDEX
PROCEDURE
Inspect/Service Heater Case Assembly
Adjust/Inspect/Service/Remove/install Side Panels and Louver Linkage
Adjust/Inspect/Service/Remove/install Doors and Bottom Cover
Inspect/Remove/Install Data Plates
Inspect/Remove/Install
Labels
PAGE
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3-71
3-76
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I N S P E C T / S E R V I C E H E A T E R C A S E A S S E M B LY
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
MATERIALS/PARTS: Antiseize compound (Item 1, Appendix E)
Dry cleaning solvent (Item 13, Appendix E)
GENERAL SAFETY INSTRUCTIONS:
Power off.
Heater cool.
INSPECTION:
Death or serious injury could occur if precautions are not
taken when maintaining this equipment. Position HEATER-
OFF-FAN switch to OFF, remove power cable plug from
POWER RECEPTACLE, and ground capacitors C1 and C2
prior to gaining access to heater compartments. Terminals
of capacitors are accessible at end cover of combustion
blower. Always have another person standing by who is
trained in electric shock first aid.
Remove electrical charge from ventilating air motor capaci-
tor C3 by shorting out contacts using tool having insulated
handle.
Allow sufficient time for heater to cool to room tempera-
ture before gaining access to heater compartments.
1. Prepare heater case assembly for inspection as follows:
a. Open left door (1), front access door (2), and right door (3), Each door is released by unlock-
ing one stud (4).
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