TM 5-4520-253-13
lNSPECT/SERVICE/ADJUST/REMOVE/lNSTALL CARBURETOR (CONT)
REMOVAL:
1.
2.
3.
4.
5.
6.
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.
Death or serious injury could occur if fuel is not handled
carefully. Use in a well-ventilated area away from open
flame, arcing equipment, ignition sources, heaters, or exces-
sive heat. Engines must be turned off and cool before re-
fueling. Use proper refueling procedures and equipment to
avoid spillage. Do not run engines near open fuel con-
tainers. Do not use fuel as a cleaning solvent. DO NOT
SMOKE.
Close shutoff valve at fuel container.
Disconnect fuel lines (1 and 2) by loosening
nuts of male elbows (3 and 4).
Tag orange wire (5) and disconnect from fuel
preheat thermostat (6). Wire (5) is part of
PC board assembly.
Tag wires and disconnect wire (7) from
thermostat (6) and wire (8) from white wire
of PC board assembly. Wires (7 and 8) are
part of carburetor heater (9). Remove car-
buretor heater and retain for reassembly.
Tag and disconnect wires (10 and 11) from
green and blue wires of PC board assembly.
Remove four screws (12) and lock
(13) and lift off carburetor (14).
washers
3-95
