TM 5-4520-253-13
REPLACE CONTROL BOX HARNESS WIRES
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
MATERIALS/PARTS: Solder (Item 12, Appendix E)
Cable tie (2)
REFERENCES:
Page 3-39 lNSPECT/REMOVE/lNSTALL ROOM THERMOSTAT RECEPTACLE
Appendix F
EQUIPMENT CONDITION:
Page
Condition Description
3-39
Control box cover open.
GENERAL SAFETY INSTRUCTIONS:
Power off.
Heater cool.
REPLACEMENT:
Table 3-5 lists particulars for all of the control box harness wires.
Table 3-6 lists only those wires
which can be fabricated for replacement by unit maintenance. Opposite the index number of each
replaceable wire in
action to be taken.
table 3-6 is the corresponding figure number in” Appendix F and the appropriate
1. Cut two cable
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 disconnect power cable before making con-
tinuity tests or before repairing heater. Always have
another person standing by who is trained in electric shock
first aid.
Allow sufficient time for heater to cool to room tempera-
ture before gaining access to heater compartments.
ties (17) and discard.
2. Release tension on harness clamp (18) by removing screw (19), lock washer (20), and nut (21).
3-51
