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72,000 Miles (115 000 km)
Lubricate U-joints (or every 6 months, whichever
occurs first).
75,000 Miles (120 000 km)
Vehicles Without Engine Oil Life System Only:
Change engine oil and filter (or every 12 months,
or every 750 hours of engine operation, whichever
occurs first). (2) (33)
Vehicles With Engine Oil Life System Only: Check oil
life system (or every 12 months, or every 750 hours
of engine operation, whichever occurs first). If
engine oil and filter are changed, reset system.
See Engine Oil Life System on page 5-20. (2) (8)
Inspect engine air cleaner filter change indicator.
If necessary, replace the filter. If vehicle is driven
in dusty/dirty conditions, inspect filter change
indicator at every engine oil change. See Engine Air
Cleaner/Filter on page 5-21 for more information.
Chassis lubrication service (or every 6 months,
whichever occurs first). (10)
Check fluid levels (or every 3 months, whichever
occurs first). (1) (5)
Replace fuel filter (or every 750 hours of engine
operation, whichever occurs first).
Steering system service. (11)
Front and rear suspension service. (12)
Spring-to-axle U-bolts and shackle bolts service. (14)
Exhaust system service (or every 6 months,
whichever occurs first). (2) (3) (15)
Wheels and tires service. (13)
Hydraulic brake service (or every 6 months,
whichever occurs first). (6) (30)
Parking brake service (or every 6 months, whichever
occurs first). (7)
Air brake service (or every 6 months, whichever
occurs first). (26)
Air brake automatic slack adjuster service (or every
500 hours, whichever occurs first). (27)
Check air brake relay valve operation and check for
leaks (or every month, or every 300 hours, whichever
occurs first).
Clean air brake application valve (or every 3 months,
or every 300 hours, whichever occurs first). Lubricate
linkage.
Air brake chamber service (or every 2 months,
whichever occurs first). (28)
Air compressor dry element pleated paper air strainer
service (or every 2 months, or every 800 hours,
whichever occurs first).
6-13
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