Compressor Inertia Ring Installation - GMC 1982 Light Duty Truck Service Manual

1C1-8 AIR C O N D IT IO N IN G COMPRESSOR OVERHAUL
2. Remove the pulley rim mounting screws and special lock
washers. Discard the lock washers and screws.
3. Slide the pulley rim off the Rotor and Hub assembly. The
Pulley Rim and the Clutch Coil (Fig. 1C1-21) are replaceable
at this point.
Remove ■ Poly Groove Drive
1. Remove the clutch plate and hub assembly as described
previously.
2. Remove the pulley rotor and bearing assembly as described
previously. Mark the location of the clutch coil terminals on
the compressor.
3. Install Rotor and Bearing Puller Guide J25031-1 (Fig. 1C1-
12) to the front head and install Puller J-8433-1 with Poly-V-
Belt Puller Leg Set J24092 and remove the clutch coil from
the front head (Fig. 1C 1-22).
Replace - V Groove Drive
1. Assemble the Clutch Coil, Pulley Rim and the Clutch Rotor
and Bearing assembly as shown in Fig. 1C 1-23. Use new
screws and special lock washers and apply sealer (Loctite
RC-75, Loctite 601, or equivalent) to screw threads but do
not lock the screws in place.
Fig. 1C 1-23 Assembling Clutch Coil, Pulley Rim, Rotor
& Bearing
2. Place the assembly on the neck of the Front Head and seat
into place using Rotor & Bearing Installer J 26271 (Fig. 1C1-
18).
Before fully seating the assembly on the Front Head, be sure
the clutch coil terminals are in the proper location in relation
to the compressor and that the three protrusions on the rear
of the clutch coil align with the locator holes in the Front
Head.
3. Install the rotor and bearing assembly retaining ring and
reassemble the Clutch Plate and Hub assembly as described
in "R-4 Compressor Clutch Plate and Hub Asm."
Replacement procedure. Check to see that the clutch plate
to clutch rotor air gap is .5 - 1.0mm (.020 - .040) inches.
Rotate the Pulley Rim and Rotor to be sure the Pulley Rim
is rotating"in-line" and adjust or replace as required.
4. Tighten the pulley rim mounting screws to 11 N • m (100 inch-
pounds) torque and lock the screw heads in place by bending
lock washers (Fig. 1C 1-18), similar to original crimp and lock
bends on washers.
Replace - Poly Groove Drive
1. Place the clutch coil assembly on the neck of the front head
with clutch coil terminals in line with mark scribed in Step
2 of the removal procedure.
2. Place the pulley rotor and bearing assembly on the neck of
the front head and seat the clutch coil and pulley rotor in
place using Rotor and Bearing Installer J-26271 (Fig. 1C1-
18).
Before fully seating the assembly on the front head, be sure
the clutch coil terminals are in proper location in relation to
the compressor and that the three protrusions on the rear of
the clutch coil housing align with the locator holes in the
front head.
3. Install the pulley-rotor and bearing assembly retaining ring
and reassemble the clutch plate and hub assembly as
described in "Clutch Plate and Hub Assembly - Replace."
4. Check to see that the clutch plate to clutch rotor air gap is
0.5 - 1.0 mm (0.020" - 0.040").
R-4 C O M P R E S S O R IN E R T IA RIN G
IN S T A L L A T IO N
R-4 compressors will be built with one of three conditions: