5-8
NORMAL VEHICLE USE
The owner’s maintenance instructions in the Maintenance Schedule
are based on the assumption that your vehicle will be used as designed:
•
to carry passengers and cargo within the limitations specified on
the tire placard.
•
to be driven on reasonable road surfaces within legal operating limits.
•
to be driven on a daily basis, as a general rule, for at least several
miles/kilometers; and
•
to be driven with proper fuel (See Section 2 for details).
Unusual operating conditions, such as driving in dusty areas (sweeper,
agricultural or off-road vehicles), extended idling (refrigeration vehicles),
or vehicles operated for frequent short trips, will require more frequent
vehicle maintenance.
1. ENGINE NOISE
— These components have an effect on the
control of noise emissions.
2. VALVE LASH
— Incorrect valve clearance will result in increased
engine noise and lower engine output, thereby adversely affecting
engine performance. Retorque rocker shaft bracket nuts before
checking and adjusting valve clearance. Check and adjust valve
clearance every 50,000 miles (80,000 km).
3. ENGINE OIL AND OIL FILTER
— Change at interval noted below
depending upon driving conditions.
•
NORMAL SERVICE — Change every 10,000 miles (16,000 km)
or 12 months whichever occurs first.
Engine (Every 10,000 miles
or 16,000 km)
Cooling system (Every
10,000 miles or 16,000 km)
Air intake system (Every
30,000 miles or 48,000 km)
Exhaust system (Every
10,000 miles or 16,000 km)
Cab (Every 10,000 miles or
16,000 km)
Inspect sound absorption materials for
tears, broken out sections or attachment.
Repair or replace as necessary.
Inspect fan, shroud and radiator for
attachment, tears or cleanliness. Repair or
replace as necessary.
Inspect all ducts, hoses and intake
silencers for leaks or chafing. Repair or
replace as necessary.
Inspect silencer, pipes, gaskets, clamps
and mounting for exhaust gas leaks or
looseness. Repair or replace as necessary.
Inspect sound absorption materials for
tears, broken out sections or attachment.
Repair or replace as necessary.
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