Pulley And Bearing Assembly Replacement - Chevrolet 1988 Light Duty Truck Repair Manual

1B1-4 A-6 AIR CONDITIONING COMPRESSOR
Allow the shaft key (36) to extend 4.5 mm
(3/ie-inch) out of the bottom of the hub keyway
(figure 4).
The shaft key (36) is curved to give an
interference fit in the groove.
Im po rtant
• Do not drive or pound on the clutch hub or the
shaft (39). Internal damage to the com pressor
may result.
Clutch plate and hub assem bly (2) (figure 4).
• Install the clutch plate and hub assem bly (2)
over the com pressor shaft lining up the key
slot on the hub with the keyway slot in the
shaft.
• Install J 9480-B on the threaded end of the
shaft (figure 5).
• Back off J 9480-B body to allow the center
screw to be threaded against the end of the
com pressor shaft (39).
• Hold the center screw with a wrench and
tighten the hex portion of J 9480-B body while
pressing the hub onto the shaft (39). After
tigh te ning the body several turns, remove
J 9480-B and check that the shaft key (36) is
properly in place in the keyway.
• Air gap between contact surfaces of the clutch
plate and hub assembly (2) and the pulley (6)
should be 0.56-1.34 mm (0.022-0.057-inch).
• Remove J 9480-B.
Inspect
• Position of the shaft (39) (even with or
slightly above the clutch hub).
3. Shaft nut (1).
• Use J 9396 to hold the clutch plate and hub
assem bly (2).
Tig h ten
• Shaft nut (1) to 27 N m (20 ft. lbs.) with
J 9399.
• Hand spin the pulley (6) to check for free
rotation.
PULLEY AND BEARING
ASSEMBLY REPLACEMENT
+-► R em ove or D isco n n ect (F ig u res 1
9)
Tools Required:
J 0435 Snap Ring Pliers
J 8092 Driver Handle
J 8433 Heavy Duty Pulley Puller
J 9395 Pulley Puller Adapter
J 9398-A Pulley Bearing Remover
J 9481-A Pulley Bearing and Pulley Installer
J 24092 Pulley Hub A dapter Set
Clutch plate and hub assem bly (2).
Pulley bearing retainer (2) with J 6435 (figure 6).
Pulley (6).
6 th ro u g h