4 Pole Clutch
V-GROOVE TYPE - 4 POLE CLUTCHRemove or Disconnect
1. Remove the Clutch Plate and Hub assembly.
2. Remove Rotor and Bearing assembly retaining ring, using Snap Ring Pliers J 6083 (Fig. 9). Mark the location of the clutch coil terminals.
If only the Clutch Rotor and/or Rotor Bearing are to be replaced, bend the screw head washer away from the pulley rim and remove the six (6) mounting screws before proceeding with Step 3. Discard the mounting screws.
3. Install Rotor and Bearing Puller J 25031 down into the rotor until the Puller arms engage the recessed edge of the rotor hub. Hold the Puller and arms in place and tighten the Puller screw against the Puller Guide to remove the Clutch Rotor and Bearing assembly (Fig. 10), being careful not to drop the Puller Guide.
4. If the pulley rim mounting screws were removed in Step 2, only the Clutch Rotor and Bearing assembly will be removed for replacement. The Clutch Coil and Housing assembly is pressed onto the Front Head of the compressor with a press fit and will not be removed unless the pulley rim mounting screws are left securely in place and the pulley rim pulls the Coil and Housing assembly off with the total Clutch Rotor and Pulley Rim Assembly.
5. Place the Rotor and Bearing assembly on blocks as shown in Figure 11. Drive the bearing out of the rotor hub with Rotor Bearing Remover J 9398-A.
It is not necessary to remove the staking at the rear of the rotor hub to remove the bearing. However, it will be necessary to file away the old stake metal for proper clearance for the new bearing to be installed into the rotor bore, or the bearing may be damaged (Fig. 12).
Install or Connect
1. Place the Rotor and Hub assembly face down on a clean, flat and firm surface.
2. Align the new bearing squarely with the hub bore and using Pulley and Bearing Installer J 9481-A with Universal Handle J 29886, drive the bearing fully into the hub (Fig. 13). The Installer will apply force to the outer race of the bearing if used as shown.
3. Using a center punch with a 45° angle point, stake 1.1-1.4mm (0.045-0.055" deep) the bearing in three places 120° apart as shown in Figure 12, but do not stake too deeply to avoid distorting the outer race of the bearing.
4. Replace rotor and bearing assembly.
On-Vehicle
A. Position the Rotor and Bearing assembly on the front head.
B. With Rotor & Bearing Installer J 26271-A (without driver handle) in position and Rotor and Bearing assembly aligned with the Front Head as shown in Figure 14, drive the assembly part way onto the head.
C. Plug clutch coil connector onto Clutch Coil.
D. Position the Clutch Coil so the three (3) locating tabs will align with the holes in the head and continue to drive the Rotor and Bearing assembly onto the front head.
E. Install the retainer ring (Fig. 9).
F. Reassemble the Clutch Plate and Hub with the shaft key onto the shaft with Installer J 9401-B until 0.5-7.6mm (0.20-0.030") air gap is obtained.
G. Install shaft lock nut. Torque to 14 N-m (10 lb.ft.).
On-Bench
Reassemble the Rotor and Bearing assembly to the front head of the compressor using Rotor & Bearing Installer J 26271-A. With Installer assembled to the Universal Handle 329886, as shown in Figure 23, force will be applied to the inner race of the bearing and the face of the rotor when installing the assembly onto the front head of the compressor.
5. Install rotor and bearing assembly retainer ring, using Snap Ring Pliers J 6083 (Fig. 9).
6. Apply sealer GM 12345382 (Loctite 242 or equivalent) to threads of pulley rim mounting screws. Install screws but do not torque the screws.
7. Rotate the pulley rim and rotor to insure that pulley rim is rotating "in-line". If pulley rim is distorted (does not rotate in-line), adjust or replace pulley rim.
8. Tighten pulley rim mounting screws to 11 N.m (100 in.lbs.) torque and lock screw heads in place by bending screw head washer similar to original crimp.
9. Reinstall Clutch Plate and Hub assembly.