P-9-TM-457-35
T.O. 35 C2-3-442-2
TM-07464A-35
TM 5-6115-457-34
11-7.
b. Inspect switch, indicator light, and
REASSEMBLY.
circuit breaker for continuity. Refer to
Refer to figure 11-1 and reassem-
ble control box in the reverse order of
c. Inspect terminal lugs for security
index numbers assigned. Pay particular
and c onditi on.
attention to the following:
d. Inspect components for dents,
a. When installing switch (25), insert
c r a c k s , and distortion.
tab of tab washer (24) into hole of plate (2).
b. Install circuit breaker (21), indi-
11-6.
REPAIR.
cator light (15), and lens (11).
NOTE
c. Install connectors (5 and 8) with key
located on the top.
Figure 1-29 is the fuel burning
d. Attach cover (10) to frame (26).
winterization kit and wiring dia-
gram contained in Operator and
e. Connect wiring and check for proper
Organizational Maintenance
Manual.
connection, refer to table 11-1.
11-8.
a. Repair or replace defective control
INSTALLATION.
box wiring in accordance with table 11-1.
Refer to Operator and Organi za-
tional Maintenance Manual and install con-
b. Repair dents and distortion using
proper tools.
trol box.
Section II. HEATER
11-9.
GENERAL.
and ignite the fuel. The flame switch con-
The heater is a fuel burning type
trols the electrical supply to the igniter,
designed to pre-heat the engine for starting
blower motor and indicator lamp; its opera-
at low temperatures down to -65F by cir-
tion is determined by temperature. Recir-
culating heated coolant through the engine.
culation of heated coolant is provided by
The heater consists of a blower motor,
the coolant pump at a rate of 80 to 100 GPH.
fuel regulator valve, limit switch, igniter,
Coolant is circulated around the heater
flame switch, and a coolant pump. The
combustion chamber where it is heated and
blower motor and fan assembly provides
then is circulated through the engine.
air for combustion; it is also a means for
driving the coolant pump. The fuel regu-
11-10. REMOVAL.
lator valve permits the fuel to be turned on
and off; it also regulates the fuel flow to
Refer to Operator and Organizational
Maintenance Manual and remove heater.
the burner. The igniter, which is a high
11-4
