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

1B5-4 HR-6 AIR CONDITIONING COMPRESSOR
2. C lutch Plate and H ub A sse m bly
5. Pulley (Rotor)
21. Key
35. Keyway (Shaft)
Figure 7— Positioning the Shaft Key, Clutch Plate,
and Hub Assembly
• Make sure the contact surfaces of the clutch
plate (2) and the pulley (5) are clean.
• Remove the forcing screw tip from J 33013-B
and reverse the body direction on the center
screw.
• Install J 33013-B with bearing (figure 8).
• Back off J 33013-B body enough to allow the
center screw to be threaded against the end of
the com pressor shaft.
• Hold the center screw with a w rench and
tighten the hex portion of J 33013-B body
while pressing the hub onto the shaft. After
tigh tenin g the body several turns, remove
J 33013-B and check that the shaft key (21) is
properly in place in the keyway, then install the
clutch plate and hub assem bly (2) to its final
position.
• Measure the air gap between contact surfaces
of the clutch plate and hub assem bly (2) and
the pulley (5). The gap should be 0.38-0.64 mm
(0.015-0.025-inch) (figure 8).
• Remove J 33013-B.
Inspect
I?
Position of the shaft (20) (even with or slightly
above the clutch hub).
Use J 33027 to hold the clutch plate and hub
assembly (2).
F-04459
Figure
T ig h te n
• S haft nut (1) to 16 N m (12 ft. lbs.) w ith
J 33022.
— Hand spin the pulley (5) to check for free
rotation.
• Remove J 33026.
PULLEY AND BEARING
ASSEMBLY REPLACEMENT
+-► R em o ve or D isco n n ect (F ig u re s 4, 9, 10, 11
1 2
and
Tools Required:
J 6983 Snap Ring Pliers
J 8092 Driver Handle
J 9398-A Pulley Bearing Remover
J 33020 Pulley Puller
J 33023-A Puller Pilot
1. Clutch plate and hub assem bly (2).
2. Pulley bearing retainer (3) using J 6083 (figure 9).
3. Pulley (5).
• Install J 33023-A to the front head (figure 10).
• Install J 33020 tangs into the inner circle of
slots in the pulley (5) contact surface. Rotate
J 33020 clockwise so the tangs will lock into
the segments between the slots (figure 11).
• Hold J 33020 in place and tighten the puller
screw against J 33023-A puller pilot to remove
the pulley (5) (figures 11 and 12).
8
— Installing the Clutch Plate and Hub
Assembly
)