P-8-627-34 T. O. 35C2-3-442-2
TM 5-6115-457-34
TM-07464A-35
CHAPTER 11
FUEL BURNING WINTERIZATION KIT REPAIR INSTRUCTIONS
Section I. CONTROL BOX
11-1.
GENERAL.
a. Remove screws (1) and pull plate (2)
aside. Tag and disconnect wiring from
plate components.
The control box is located to the
right of the control cubicle and consists of
b . Remove connectors (5 and 8). If
an ON-OFF switch, a circuit breaker,
press-to-test indicator light, and two
n e c e s s a r y , remove wires from connectors.
r e c e p t a c l e s for interconnection. The ON-
OFF switch permits starting of the heater
c . Remove cover (10) from frame (26).
and a means of stopping the heater. When
d. Remove lens (11), indicator light (15),
the switch is positioned to OFF, the heater
motor will continue to operate for a period
circuit breaker (21), switch (25) and com-
of approximately 4-1/2 minutes, to purge
ponent board assembly (25 B).
heated air and fuel from heater. The cir-
11-4.
CLEANING.
cuit breaker is a manual reset type; it
protects the heater circuitry in case of an
o v e r l o a d . The press-to-test indicator light
a. Clean electrical components with a
illuminates to show that the heater is in
cloth moistened with an approved cleaning
operation, it is also a means of checking
solvent, and dry thoroughly.
s y s t e m electrical power.
11-2.
REMOVAL.
WARNING
Cleaning Solvents are f lammable and
Refer to Operator and Organiza-
moderately toxic to skin, eyes and
tional Maintenance Manual and remove
respiratory tract. Eye and skin
control box.
protection required. Good general
ventilation is normally adequate.
DISASSEMBLY,
11-3.
Refer to figure 11-1 and disassem-
b. Clean metal components with an
ble control box in the order of index num-
b e r s assigned. Pay particular attention to
approved cleaning solvent and dry
thoroughly.
the following:
CAUTION
11-5.
INSPECTION.
Prolonged use of soldering equip-
ment could cause damage to compo-
a. Inspect connectors and each wire for
nents due to excessive heat.
continuity. Refer to table 11-1. Inspect
NOTE
connectors for damaged threads; bent,
loose, or missing pins; and for shorts to
D i s a s s e m b l e control box only to
case and surrounding pins.
the extent necessary to effect
repair.
Change 8 11-1
