Compressor Clutch: Service and Repair

1. Place compressor on work bench with clutch facing upward.

Fig. 1 Removing clutch center bolt:

2. Install two 5mm bolts in internal thread holes in armature, then using a screwdriver to secure assembly, remove center bolt using a suitable hex wrench, Fig. 1.
3. Remove armature and shim from shaft.
4. Remove snap ring from boss section of front plate using suitable snap ring pliers.

Fig. 2 Removing compressor pulley:

5. Remove compressor pulley using suitable puller, Fig. 2.
6. Disconnect field core and thermal protector electrical connector, then remove field core.
7. Check friction surfaces of the clutch for damage due to excessive heat or excessive grooving due to slippage. If necessary, replace coil, pulley, bearing assembly and clutch hub as a set.
8. Install field core on compressor. Torque field core attaching screw to 30-56 inch lbs.
9. Apply thin coat of compressor oil to the boss section of front plate.

Fig. 3 Installing compressor pulley:

10. Push pulley into compressor with disc surface facing upward, then drive pulley into place using suitable tools, Fig. 3.
11. Install snap ring.
12. Position a suitable hex wrench into center hole from outside of armature, then install .008 inch and .020 inch shims, one of each, from the inside. Position armature onto shaft.

Fig. 4 Measuring hub to pulley clearance:

13. Measure hub to pulley clearance, Fig. 4. If clearance is not .016-.024 inch, replace adjusting shims until specified clearance is obtained.
14. Apply suitable locking compound to threads of center bolt, then torque bolt to 61-87 inch lbs.
15. Connect electrical connectors.