operators_manual

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.
How to Replace Air Conditioner
Filter
Inspect and clean cab air filter element
every 3-6 months of service. Depending on
the operating environment, if air flow from
the air conditioner and heater is less
efficient or windows fog easier, you may
need to replace the cab air filter.
1. Tilt the hood open.
2. Locate air intake housing at
passenger rear corner of vehicle
under the rain tray.
3. Locate filter cover labeled "OPEN"
with an arrow pointing rearward in
vehicle. Slide filter cover rearward
in vehicle until you are able to
remove the cover.
4. Remove and inspect filter referring
to maintenance interval schedule.
5. Replace filter in housing taking
care to align the airflow direction
that is indicated on the side of the
side of the filter element with the
airflow direction that is clearly
marked on the air intake housing.
6. Replace the filter cover on the air
intake housing and slide the cover
forward in vehicle. An audible snap
sound can be heard when the
cover is correctly in place. If the
snap feature is damaged there are
two screw features that may be
utilized to retain the cover in place.
7. Close and secure hood of vehicle.
Replace the Recirculation Air Filter
Please contact an authorized dealer when
the service interval is required to inspect
the cabin recirculation air filter.
MAINTENANCE - Heater and Air Conditioner Maintenance
278 Y53-6126-1A1 (01/21)
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