Compressor Shaft Seal: Service and Repair

Fig 16 Compressor Through Bolts:

REMOVAL
1. Using a refrigerant recovery machine, remove the refrigerant from the system.
2. Remove A/C compressor.
3. Remove compressor clutch/coil assembly.
4. Remove compressor through-bolts.

Fig 17 Removing Front Cover:

5. Remove front cover by tapping on the outside diameter of the cover with a plastic hammer.

Fig 18 Removing Steel Valve Plate Gasket:

Fig 19 Removing O-Ring:

6. Remove steel valve plate gasket and 0-ring seal and discard.

CAUTION: Never reuse cover O-rings or the steel valve plate gaskets.

Fig 20 Removing Felt Retainer And Felt:

7. Pry out the felt retainer and remove felt from front cover).

Fig 21 Seal Snap Ring:

8. Remove seal snap ring.

Fig 22 Removing Seal:

9. Place compressor front cover on a flat surface with neck of cover facing up. Using a brass drift, press out seal assembly.

Fig 23 Disassembling Compressor Front End:

10. Remove dowel pins, valve plates.

INSTALLATION
1. Install dowel pins in front compressor body
2. Install cleaned valve plates.
3. Install steel gasket.
4. Clean crankshaft and coat lightly with refrigerant oil.
5. Lubricate crankshaft seal seat cavity of front housing with refrigeration oil.

Fig 24 Match Socket To Outer Seal Diameter:

Fig 25 Installing Seal:

6. Lubricate crankshaft lip seal and seal O-ring with refrigeration oil. Then install lip seal in front cover using a socket that contacts the outer diameter of the lip seal.

Fig 26 Seal Snap Ring:

7. Install seal snap ring.
8. Lubricate front cover O-ring with refrigeration oil and carefully place it in seal groove.

Fig 27 Installing Lip Seal Protector:

9. Install lip seal protector on shaft.
10. Install front cover to front compressor body
11. Install compressor through-bolts and finger tighten only.
- After bolts have been finger tightened, torque to 29 Nm (260 in. lbs.).

Fig 28 Felt Retainer And Felt:

12. Install felt shaft seal and retainer into front housing.

CAUTION: Refer to Oil Level for further details.

13. Install refrigeration oil (ND8 PAG) into the compressor through the suction port.
14. Check compressor operation for smoothness by rotating crankshaft at least five full revolutions.
15. Check front housing clutch coil alignment pin for proper installation.
16. Install clutch assembly.
17. Install compressor.
18. Evacuate and charge refrigerant system.