Replacement of Belts
Replace the drive belts every 2,000 hours or 300,000 miles (480,000 km).
Inspection of the Air Intake System
Perform the following maintenance on the Air Intake System:
1. Inspect all the connections in the air system to make sure they are tight and
leak-free.
2. Check all hoses and ducting for punctures, deterioration, or other damage and
replace, if necessary.
Monitoring the Air Cleaner
The engine is equipped with an engine-mounted air cleaner that is flat in design to
accommodate various vehicle packages. Replace dry type air cleaner elements
when the maximum allowable air intake restriction has been reached.
1. Inspect the air cleaner element every 50,000 miles (80,000 km) or more often
if the engine is operating under severe dust conditions. Replace the element,
if necessary.
2. Check the gaskets for deterioration and replace, if necessary.
3. If the dry type air cleaner is equipped with an aspirator, check for aspirator
damage or clogging. Clean, repair or replace, as necessary.
NOTICE:
Do not allow the air inlet restriction to exceed 20 in. H2O (5.0
kPa) under any engine operating conditions. A clogged air cleaner element
will cause excessive intake restriction and reduced air supply to the engine
resulting in increased fuel consumption, inefficient engine operation, and
reduced engine life.
4. Inspect the entire air system for leaks daily.
Routine Preventive Maintenance
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All information subject to change without notice.
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DDC-SVC-MAN-0175
