TM 5-4520-253-13
REPAIR PC BOARD ASSEMBLY HARNESS RECEPTACLE AND PLUG
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
MATERIALS/PARTS: Sealant (Item 10, Appendix E)
Tape (Item 14, Appendix E)
Printed circuit board assembly harness plug
Printed circuit board assembly harness receptacle
Terminal, female (9)
Terminal, male (4)
GENERAL SAFETY INSTRUCTIONS:
Power off.
Heater cool.
REPAIR:
Death or serious lnjury 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 Cl 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.
Allow sufficient time for heater to cool to room temperature
before gaining access to heater compartments.
PC board assembly harness wires are potted into PC board assembly harness receptacle and plug, Repair con-
sists of replacing receptacle and plug. PC board assembil harness wires are long enough to allow cutting close to
receptacle and plug and installing new receptacle and plug. Proceed as follows:
NOTE
For Model UH-68G, PC board assembly may have been
replaced with PC board assembly and wiring harness for
Model UH-8G1.
1. Repair receptacle as follows:
a. Pull receptacle (1) out of side of heater case.
b. Cut off and discard cable ties (2) as needed to allow access to harness wires (3).
c. Tag wires (3) and cut as close to receptacle (1) as possible. Discard receptacle.
d. Strip 1/4 inch (6.35 mm) of insulation from end of each wire (3). Crimp female terminal (4) on each wire.
Change 2
4-26.1
