TM 5-4520-253-13
l N S P E C T / R E M O V E / l N S T A L L P O W E R R E C E P T A C L E A N D E X T E R N A L F U EL
P U M P R E C E P T A C LE
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
Solder gun kit
NSN 3439-00-930-1638
MATERIALS/PARTS: Sealant (Item 10, Appendix E)
Solder (Item 12, Appendix E)
Tape (Item 14, 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 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.
1, Check for presence of dust caps (1 and 3) and chains (2 and 4).
2. Check threads on POWER RECEPTACLE (5), EXTERNAL FUEL PUMP RECEPTACLE (6), and
inside dust caps (1 and 3) for stripping and crossing.
3. Carefully inspect both receptacles for signs of arcing, burning, or other damage.
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
at end cover of combustion blower. Always have another
person standing by who is trained in electric shock first aid.
4. Remove six screws (7) and lock washers (8). Lift off bottom cover (9).
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