operators_manual

Air Intake System
Engine heat, vibration, and age combine to
loosen air intake connections and cause
cracks in the tubing and elbows. Leaks in
the intake system allow abrasive dust to
enter the engine and quickly cause
expensive damage. During your daily walk-
around inspection, carefully check all
tubing, elbows, clamps, supports, and
fasteners for condition and tightness.
Check the charge-air-cooler for air leaks
annually. The air leaks can be caused by
cracked tubes or header. For service see
your authorized dealer.
CAUTION
DO NOT use air intake pipes and con-
nections as a step or to pull yourself
up. This could loosen the connections
and open the system to unfiltered air
which could damage the engine.
Turbocharger
WARNING
DO NOT operate engine with turbo-
charger intake piping disconnected. A
suction is created when the engine is
running. This suction could draw your
hand or anything else near it into the
impeller fan. You could be injured. Al-
ways keep the intake piping connected
when you will be running the engine.
When servicing the air intake and exhaust
systems on a turbocharged engine, check
the items listed below:
Lubricating System
Check the oil lines, housing, and
connections. Look for leaks, damage, or
deterioration. Leaks could mean you have
damaged oil lines or oil seals.
Manifold
With the engine operating, check for
leaking manifold or flange gaskets.
High Frequency Vibration
Vibration may indicate turbo rotor
imbalance. Have your dealer investigate
this immediately. If you detect any
deficiencies, take the vehicle to an
authorized dealer for servicing. Delay could
lead to severe and expensive damage to
your vehicle.
How to Replace the Engine Air
Filter
Engine air filter replacement should be
performed with the vehicle parked, the
ignition OFF, and the parking brake set.
1. Open the hood to access the
engine air cleaner, located on the
firewall at the back of the engine
compartment.
2. Using a wrench, loosen to
disengage the (4) bolts securing
the filter housing cap to the filter
housing.
3. If present, remove the hose
connecting the filter housing cap to
the solenoid by pushing in on the
plug and pulling the hose out.
Hose is present for vehicles with an
under-hood air intake.
Disconnecting the hose allows the
cap to be removed.
4. Pull the air filter housing cap away
from the main enclosure to access
the filter.
MAINTENANCE - Engine Maintenance
268 Y53-6126-1A1 (01/21)
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