6 Scheduled Maintenance
Check Engine Belts and Tensioner — Inspect the belt(s) for
cracking and wear. The belt tensioner should be checked for
proper operation.
Change Engine Coolant Filter (if applicable) — Replace the
engine coolant filter. A filter containing the proper
supplemental coolant additive should be used to maintain the
SCA concentration level.
Check Engine and Transmission for Leaks — Perform a
visual inspection of the engine and transmission looking for
any fluid leaks visible from above.
Drain Fuel Water Separator — Open the drain valve on the
fuel/water separator and allow water to drain from the filter.
Change Fuel Water Separator — Replace the fuel filter
following the instructions in the Engine Operator's Manual.
Check Air Restriction Gauge (if applicable) — Record the
reading on the gauge, reset, start the engine, run to high idle
and shut off the engine. If the reading remains on zero, the
gauge may be defective or the intake piping has a leak. The
cause must be investigated and the gauge replaced and/or the
piping repaired.
If the initial gauge reading indicates that the filter should be
changed, do so at this time. See the next item on the
Preventative Maintenance form.
Change Air Filter — The air filter should be changed as
needed. If the truck is equipped with a restriction gauge,
replace the filter when the gauge indicates it is appropriate.
Change Air Dryer Desiccant (if applicable) — The desiccant
should be changed as needed. Change as soon as water is
evident when the system air tanks are drained.
Check Exhaust System — Visually inspect all of the exhaust
system components for leaks and/or damage.
Clean Transmission Breather — Confirm that the breather,
located on top of the transmission, is clean and the passage is
open. Do not spray directly with high pressure or cleaning
solvents.
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