Chevrolet 1991 Light Duty Truck Repair Manual page 66

1B4-4 HR-6 HE AIR CONDITIONING COMPRESSOR
2. Clutch Plate And Hub Assembly
________________________________________ B6574
Figure 6— Removing the Clutch Plate and
Hub Assembly
J 33013-B and check that the shaft key (21) is
properly in place in the keyway, then install the
clutch plate and hub assembly (2) to its final
position.
• Measure the air gap between contact surfaces
of the clutch plate and hub assembly (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.
3. Shaft nut (1).
• Position of the shaft (20) (even with or slightly
above the clutch hub).
• Use J 33027-A to hold the clutch plate and hub
assembly (2).
I g f l Tighten
• Shaft nut (1) to 16 Nm (12 ft.lbs.) with J 33022.
— Hand spin the pulley (5) to check for free rotation.
• Remove the assembly from J 33026
21
2. Clutch Plate and Hub Assembly
5. Pulley (Rotor)
21. Key
35. Keyway (Shaft)
Figure 7— Positioning the Shaft Key, Clutch Plate,
and Hub Assembly
Hub Assembly
2
F4459