Paccar MX-11, Operator'S Manual

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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.
Air Compressor
Perform these maintenance procedures
according to the Preventative Maintenance
Schedule.
1. Check and correct for carbon
buildup
Charge Air Piping
Perform these maintenance procedures
according to the Preventative Maintenance
Schedule.
1. Check and correct the following
charge air piping components:
• Hose/pipe condition –
deterioration/signs of leaking
• Hose clamps for tightness
• Clearance to other components
Charge Air Cooler
Perform these maintenance procedures
according to the Preventative Maintenance
Schedule.
1. Check and correct the following
components of the charge air
cooler:
• Cracked tubes or header
• Clogged fins/tubes
• Hose/pipe condition –
deterioration/signs of leaking
• Hose clamp torque
Engine Air Filters
The following service information is basic
to all engine air filter makes and models.
WARNING
DO NOT use air filter housings as grab
handles. These components may
break if you are using them to support
your weight. Failure to comply may re-
sult in personal injury or damage to ve-
hicle components.
WARNING
DO NOT push on the under hood air
door with hands. This door is held
closed with a spring which may shut
close unexpectedly. Failure to comply
may result in personal injury.
CAUTION
Failure to replace air filter at proper in-
tervals may result in passage of dirt/
debris into the engine or the “dusting”
of an engine resulting in significant
equipment damage.
Your vehicle is equipped with an air inlet
restriction indicator as standard equipment
ENGINE MAINTENANCE - Maintenance Procedures
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