Chevrolet B7 2001 Owner's Manual page 186

100,000 Miles (166 000 km)
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Change power steering fluid (or every 24 months,
whichever occurs first). (13)
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Replace power steering reservoir filter element
(or every 24 months, whichever occurs first).
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Front axle service (or every 36 months, whichever
occurs first). (38)
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Rear axle service Eaton, Rockwell, Spicer Axles
(or every 12 months, whichever occurs first). (37)(47)
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Exhaust brake service (if equipped). Check for
excessive spindle free play and smooth operation.
Lubricate ball joint cap.
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Air brake service (or every 12 months, or
3,600 hours, whichever occurs first). (44)
150,000 Miles (240 000 km)
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Cooling system service (or every 60 months since
last service, whichever occurs first). (3)(35)
5-18
200,000 Miles (320 000 km)
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Remove, disassemble, clean and inspect the air brake
trailer supply valve (or every 2 years, or 7,200 hours,
whichever occurs first).
250,000 Miles (400 000 km)
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Wheel bearings service
(or every 36 months, whichever occurs first). (23)(48)
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Rear axle service Eaton, Rockwell, Spicer Axles
(or every 36 months, whichever occurs first). (37)(48)
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Manual transmission fluid replacement
(or every 60 months, whichever occurs first).
300,000 Miles (480 000 km)
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Remove, disassemble, clean and inspect the air
brake air dryer (or every 3 years, or 10,800 hours,
whichever occurs first). Replace desiccant on
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Bendix Westinghouse units.
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Eaton Axle (oil filled)