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Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/1/21
268
Service and Maintenance
(9)
Initial check at 160 km (100 mi) and at
1 600 km (1,000 mi) with tire rotation is
required.
(10)
See the Cummins Owner's Manual that
came with the vehicle for additional details
and to confirm the maintenance interval.
Explanation of Complete Vehicle
Maintenance Schedule
The following is a brief explanation of each
of the services listed in the preceding
Complete Vehicle Maintenance Schedule.
1. Engine Noise :
These components have an
effect on the control of noise emissions.
Service Interval
Maintenance procedure
Engine
Every 16 000 km (10,000 miles)
Inspect sound absorption materials for tears,
broken out sections or attachment. Repair or
replace as necessary.
Cooling System
Every 16 000 km (10,000 miles)
Inspect fan, shroud and radiator for attachment,
tears or cleanliness. Replace as necessary.
Air intake system
Every 16 000 km (10,000 miles)
Inspect all ducts, hoses and intake silencers for
leaks or chafing. Repair or replace as necessary.
Exhaust system
Every 16 000 km (10,000 miles)
Inspect silencer, pipes, gaskets, clamps and
mounting for exhaust gas leaks or looseness.
Repair or replace as necessary.
Cab
Every 16 000 km (10,000 miles)
Inspect sound absorption materials for tears,
broken out sections or attachment. Repair or
replace as necessary.
2. Overhead Set :
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
240 000 km (150,000 miles) or 5,000 hours
whichever occurs first.
3. Engine Oil and Oil Filter :
See
“
Maintenance Schedule for Engine Oil and
Filter
”
below.
4. Oil Catch Cup :
Check engine blow
–
by oil
level in the oil catch cup every 16 000 km
(10,000 miles). Make sure that the oil
accumulate level in the oil catch cup does
not exceed 10mm (0.4 in). If the level
exceeds 10mm (0.4 in), clean the cup.