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Chassis lubrication service (or every 6 months,
whichever occurs first). (10)
Cooling system service. Clean the cooling system
filler cap with clean water, clean the core, pressure
test the cap and the system for proper pressure
capability, and inspect the condition of cooling and
heater hoses and clamps. Replace hoses if cracked,
swollen, or damaged.
Check restraint system. (34)
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)
Inspect door hinge pins and bushings and replace as
necessary.
Wheel bearing (grease type) service (and whenever
hubs are removed). (19) (30)
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 brake system valve service (or every 3 months,
or every 900 hours, whichever occurs first). (31)
Air compressor dry element pleated paper air strainer
service (or every 2 months, or every 800 hours,
whichever occurs first).
Thermostatically controlled engine cooling fan
service. (3) (17)
Shields and underhood insulation service. (3) (4) (18)
Rear axle air shift motor service. (9)
Air intake system service (or every 24 months,
whichever occurs first). (3) (4) (20)
96,000 Miles (152 000 km)
Lubricate U-joints (or every 6 months, whichever
occurs first).
6-15
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