GMC 1989 Light Duty Truck, Repair Manual, Page: 70 / 998

1B3-12 R-4 AIR CONDITIONING COMPRESSOR
1
.
J 21352-A Support Block
J 25008-A Holding Fixture
J 29886 Driver Handle
J 33019 Bearing Staking Tool
Pulley rotor on J 21352-A (Figure 30).
4 POLE CLUTCH ROTOR AND/OR
BEARING-V-GROOVE
-►4-
Install or Connect (Figures 28 and 34)
NO TIC E: Do n o t s u p p o rt th e ro to r by restin g the
p u lle y rim on a flat su rface d u rin g bearin g in stal­
lation sin c e the ro to r face w ill b end .
2. Bearing into the hub bore using J 9481 -A and J 29886
(figure 31).
N OTICE: The stake m e ta l sh o u ld n o t c o n ta c t the
o u te r race o f th e b e a rin g to p re v e n t the p o s s ib il­
ity o f d isto rtin g the o u te r race.
3. Stake the bearing using J 33019 at 120 degree inter­
vals (figure 31).
• Rotate the assem bly on the tool to make sure
the staking location is com pletely supported by
the tool.
4. Compressor in J 25008-A and clam p it in a vise.
5. Pulley rotor and bearing to the front head using
J 9481-A and J 29886 (figure 32).
6. Rotor and bearing assem bly retainer ring using
J 6083.
7. Clutch plate and hub assembly.
Tools Required:
J 6083 Snap Ring Pliers
J 9481-A Pulley Bearing and Pulley Installer
J 29886 Driver Handle
1. Bearing to the rotor hub using J 29886 and J 9481-A
(figure 33).
2. Stake the bearing.
• Use a center punch with a 45 degree angle
point.
• Staking depth should be 1.1-1.4mm (0.045-
0.055-inch).
• Stake in three places 120 degrees apart.
3. Rotor and bearing assem bly using J 26271-A (figure
28).
4. Retainer ring using J 6083.
5. Loctite 601 or equivalent to screw threads.
Fig u re 3 0 — B earing In stallatio n
F igure 3 2 — P ulley R otor and B earin g In s ta lla tio n