operators_manual

Heater
CAUTION
During extreme cold weather, DO NOT
blow
hot defroster air onto cold wind-
shields. This could crack the glass.
Turn the Air Flow Control Dial to De-
frost and adjust the fan speed accord-
ingly while the engine warms. If the
engine is already warm, move the
Temperature Control Dial to "cool,"
then gradually increase the tempera-
ture when you see that the windshield
is starting to warm up. Failure to com-
ply may result in equipment damage.
• Check all heater controls for full-
range operation.
•
Check hoses, connections, and
heater core for condition and leaks.
Air Conditioner
WARNING
The air conditioning system is under
pressure.
If not handled properly dur-
ing servicing, it could explode. Any
servicing that requires depressurizing
and recharging the air conditioning
system
must be conducted by a quali-
fied technician with the right facilities
to do the job. Failure to comply may
result in death, personal injury, equip-
ment or property damage.
WARNING
Wear eye protection any time you blow
compressed
air. Small particles blown
by compressed air could injure your
eyes.
• Listen to the compressor and drive
clutch for noise and vibration. If you
find problems, have the system
checked thoroughly
. A
malfunctioning clutch usually
indicates trouble elsewhere in the
system.
• Check the evaporator core, filter,
and condenser core for debris
restricting air flow. Clean if
necessary. Small particles may be
removed with compressed air
blown through the core in the
opposite direction of normal air
flow.
• Check the engine belt for condition
and proper tension.
•
Check all hoses for kinks,
deterioration, chafing, and leaks.
Adjust kinked or chafing hoses to
eliminate restrictions and prevent
further wear.
• Check all components and
connections for refrigerant leaks. If
you discover a leak, do not try to
tighten a connection. Tightening a
connection may cause a leak to
worsen. Have a qualified technician
correct the problem.
NOTE
A leaking evaporator or condenser
core
cannot be repaired; it must be re-
placed.
Have the air conditioning system fully
serviced annually by your authorized
dealer
. Qualified service technicians will
have to evacuate and recharge the system.
MAINTENANCE - Heater and Air Conditioner Maintenance
Y53-6110-1A1 (01/21) 279
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