TM 5-3810-306-20
CAB HEATER/DEFROSTER ASSEMBLY REPLACEMENT
TOOLS:
General mechanic’s tool kit: automotive (5180-00-177-7033)
SUPPLIES:
Clean rags (Item 1, Appendix C)
EQUIPMENT CONDITIONS: Disconnect ground cable at shunt. (Refer to page 8-109.)
Seat and pedestal removed. (Refer to page 15-27.)
REMOVAL:
1.
REMOVE CAB HEATER/DEFROSTER ASSEMBLY
(1).
WARNING
Disconnect
electrical
power
from
heater before removing covers. Do
not run heater with covers removed
except
for
troubleshooting
or
adjustment. Ignition pack generates
a voltage that is high enough to
cause severe injury.
a. Turn off petcock at heater fuel tank located
behind cab on boom pedestal.
b. Loosen screw (2) and disconnect controller
wiring harness (3) from heater (1).
c. Disconnect multi-pin connectors on bottom of
controller wiring harness (3).
d. Loosen two setscrews (4) securing heater to cab
floor. Access these screws through controller
wiring harness opening.
e. Loosen clamp (5) and disconnect air flow tubing
(6).
f.
Lift heater (1) to disconnect clamp (9) on fuel line
hose (7). Plug fuel line.
15-34
