operators_manual

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.
How to Replace Air Conditioner
Filter
The fresh air filter for the cab HVAC is
located in the air intake housing that is
located in the passenger rear corner of the
engine compartment. The filter can be
replaced without using any tools.
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.
MAINTENANCE - Heater and Air Conditioner Maintenance
252 Y53-6047-2HEN (03/18)
5