Chevrolet T-Series, Owner'S Manual

Page: 275 / 326

❑
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)
48,000 Miles (75 000 km)
❑
Vehicles Without Engine Oil Life System Only:
Change engine oil and filter (or every 12 months,
or every 600 hours of engine operation,
whichever occurs first).
(2)
❑
Vehicles With Engine Oil Life System Only:
Check oil life system (or every 12 months, or
every 600 hours of engine operation, whichever
occurs first). If engine oil and filter are changed,
reset system. See
Engine Oil Life System
on page 190 . (2) (8)
❑
Lubricate U-joints (or every 6 months, whichever
occurs first).
50,000 Miles (80 000 km)
❑
Inspect air compressor discharge port (or every
6 months or every 1,800 hours, whichever
occurs first.)
52,500 Miles (84 000 km)
❑
Check fluid levels (or every 3 months,
whichever occurs first).
(1) (5)
❑
Chassis lubrication service (or every 6 months,
whichever occurs first).
(10)
❑
Wheels and tires service. (13)
❑
Adjust valve lash (or every 2,625 hours of
engine operation, whichever occurs first).
(16)
❑
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).
275