•OFF-Outside air is shut out and the fan will not operate.
•
(Panel and floor) -Distributes outside air through the instrument
panel registers and the floor ducts.
•
(Floor) -Allows for maximum heating. Distributes outside air
through the floor ducts.
•
(Floor and defrost) -Distributes outside air through the floor
ducts and the windshield defroster ducts.
•
(Defrost) -Distributes outside air through the windshield
defroster ducts. It can be used to clear ice or fog from the windshield.
Operating tips
•In humid weather, select
before driving. This will reduce fogging
on your windshield. After a few minutes, select any desired position.
•To reduce humidity buildup inside the vehicle, don’t drive with the
climate control system in the OFF position.
•Don’t put objects under the front seat that will interfere with the
airflow to the rear seats (if equipped).
•Remove any snow, ice or leaves
from the air intake area (at the
bottom of the windshield under
the hood).
•Do not place objects over the defroster outlets. These objects can
block airflow and reduce your ability to see through your windshield.
Also, avoid placing small objects on top of your instrument panel.
These objects can fall down into the defroster outlets and block
airflow and possibly damage your climate control system.
Do not place objects on top of the instrument panel, as these
objects may become projectiles in a collision or a sudden stop.
Controls and features
22
Draining the fuel filter/water separator—Cummins B engine
Refer to your engine operator’s manual for service procedures.
Fuel filter replacement—Caterpillar 3126 B engine
The fuel filter/water separator is
located on the left side of the
engine. Replace the fuel filter/water
separator as recommended in the
Scheduled Maintenance Guide, or
sooner if it becomes plugged.
Vehicles operated on fuel with more
than average impurities may require
replacement of the fuel filter more
frequently. The spin-on filter has a
water drain valve built into the
bottom of the filter canister.
Removal
1. Using an oil filter wrench, remove the filter.
2. Carefully clean the mating surfaces.
Installation
1. Fill the filter with clean, fresh diesel fuel.
2. Coat the filter seal with clean, fresh diesel fuel.
3. Hand-tighten the filter until it seats firmly against the mount, then
tighten (by hand) an additional
1⁄3to1⁄2turn.
4. Start the engine and check for fuel leaks.
Maintenance and care
155
