TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 746 of 801
TM 9-2320-273-34
CHAPTER 22
REPAIR OF HEATER
22-1. Description.
All M915 series vehicles use the same cab heater assembly. The assembly is a hot
water type unit, which consists of the following major items (fig. 22-1).
a. Core.
Receives hot coolant from engine block. It absorbs the heat from the coolant in a manner
similar to the engine radiator.
b.
the hot
c.
d.
Fans.
Draw cold outside air through the heater core, where the air picks up the heat, and directs
air into the cab.
Motor.
Drives both fans.
Shutters.
Allow the driver to direct the hot air to the floor of the cab or to the windshield (for
defroster operation ).
e. Controls.
Allow the driver to place heater assembly in operation and regulate temperature of
air from heater. (See TM 9-2320-273-20 for description and illustration.)
Figure 22-1. Heater Assembly.
22-2. Removal.
(Refer to TM 9-2320-273 -20.)
22-1
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