CONTROLS AND INDICATORS CONTINUED
Figure 7. Heater and Defroster Control.
COMPONENT OR INDICATOR
Heater and Defroster Control
Heater and defroster are controlled by a two speed
The heater unit is connected to engine by water
hoses. Each hose is connected to a shut-off
valve at engine. Be sure the valves are open
when heater and defroster are being operated.
Turn off valves when heater is not being used
during warm seasons.
This heater unit is also a cab pressurizer. Pressurizer
can be used during warm seasons without heat by
closing the heater hose shut-off valves at engine.