Compressor Shaft Seal: Service and Repair
Shaft Seal Replacement1. Remove the armature plate.
Note: Removal of the clutch pulley and coil is not necessary.
2. Remove the felt seal and snap ring.
3. Remove the shim(s).
4. Insert the SST into the compressor aligning the cutout of the SST with the groove of the seal plate.
5. Rotate the SST counterclockwise to make sure that the cutout is engaged with the seal plate.
6. Pull out the seal plate.
7. Insert the SST into the compressor aligning the cutout of the SST with the metal paw of the shaft seal.
8. Rotate the SST counterclockwise to make sure that the cutoff is engaged with the metal pawl.
9. Pull out the shaft seal.
10. Lay down the compressor and clean the shaft seal contacting face of the compressor with cleaning solvent.
Caution
^ Keep the cleaning solvent and dirt out of the compressor.
^ Do not use any cloth for cleaning.
Clean only by rinsing with the solvent.
^ Do not spill the refrigerant oil from the compressor. Refill the same amount of the oil if the oil is spilled out.
11. Clean the new shaft seal throughly with cleaning solvent.
12. Lubricate the shaft seal with refrigerant oil (SUNISO 5GS or equivalent) and install it on the SST.
Note
^ Use only clean refrigerant oil.
^ Do not touch the sealing surfaces of the shaft seal after lubricated.
13. Liberally lubricate the compressor shaft with refrigerant oil.
14. Install the shaft seal onto the compressor shaft aligning the seal case flats with the shaft flats.
15. Clean the seal plate with cleaning solvent. Lubricate the seal plate with refrigerant oil (SUNISO 5GS or equivalent).
Note
^ Use only clean refrigerant oil.
^ Do not touch the sealing surfaces of the shaft seal after lubricated.
16. First, slide the seal plate into the compressor by hand as far as possible.
17. Press the seal plate with grip side of the SST.
18. Install the snap ring with its chamfered edge inside.
19. Press the snap ring with the grip side of the SST, then install the felt seal.
20. Make sure the snap ring is seated correctly in its groove.
21. Install the shim(s).
22. Install the armature plate.
Measure the clearance between the pulley and armature plate all the way around.
If the clearance is not as specified, add or remove the shim as required.
Clearance: 0.4 - 0.5mm (0.016 - 0.020 in)