Kenworth T410, Driver'S Handbook Manual

Page: 250 / 418

Page 224 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
AIR CLEANER SYSTEMS
AIR CLEANERS AND FILTER REPLACEMENT
Complete disassembly and cleaning is recommended at each 40,000km
interval. Under severe operating conditions, this should be done more
frequently. Damaged or defective parts should (with the possible exception
of mounting brackets) be replaced, not patched or repaired.
The following service information is basic to all air cleaner makes and
models:
1. Filter elements should be serviced when the air cleaner
restriction indicator locks in the high position or when the air
cleaner restriction gauge (optional) reads 25 inches H
2
O or
higher. If your vehicle is equipped with a dry-type air cleaner,
have the element serviced at an authorised Kenworth dealer.
2. Paper elements require care and proper handling, because they
are critical to engine service life.
3. Service the air cleaner periodically. If the vehicle operates in
areas with heavy dust, maintenance should be more frequent.
4. Air cleaner elements should be replaced when service indicator
pops.
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.
1. Under normal operating conditions, Kenworth recommends
complete disassembly and cleaning of the air intake system at each
100,000km. Under severe operating conditions, the disassembly
and cleaning should be more frequent. Replace any defective parts.
With the possible exception of mounting brackets, do not repair
defective parts.
2. Check the charge air cooler for air leaks annually. The air leaks
can be caused by cracked tubes or header. For service, see your
authorised Kenworth dealer.