Figure 71.8. Battery compartment shut-of valve.

Figure 71.8. Battery compartment shut-of valve.

personnel heater. An electrically operated fan causes

153. Battery Compartment Shut-off Valve

air to flow through the core, where heat is transferred

from the heated liquid, and circulated throughout the

154.

cab. A separate blower diverts warm air from the heater

core, through apertures in the instrument panel, to the

A 4-way valve (fig. 71.8) allows the heated fluid to

windshield to eliminate and prevent frost and fogging

by-pass the battery compartment to prevent overheating

conditions on the glass.

the storage batteries.

157.

155. Personnel heater

When the exterior temperature is not sufficiently

156.

cold to warrant use of the liquid heater, the personnel

heater may be used by actuating the circulating pump in

The personnel heater (fig. 71.9) utilizes liquid which

the liquid heating system, utilizing liquid which has been

has been heated by the liquid heater on the engine, to

heated by the truck engine to supply the heater core.

provide warm air to the cab of the truck. The heated

fluid circulates through a honeycomb core in the

AGO 5667A