Removing Shaft Seal of Refrigerant Compressor

Removal:
1. Discharge air conditioning system (recycling).
2. Remove refrigerant compressor.
3. Remove spring plate.






4. Remove locking ring (10) for shaft seal.






5. Remove slip ring (12) by means of remover and installer.






6. Remove shaft seal (13) by means of remover and installer. For this purpose, press down on tool, turn tool clockwise to get a hold of shaft seal lug with locking tongues on tool. Completely remove shaft seal by pulling seal in straight direction from shaft.
7. Remove 0-ring (11) from inside bore in housing cover. A wire, bent to a hook, may be used for this purpose.

Installation:
8. Check whether parts of old shaft seal are still in bore of housing cover. Clean bore prior to inserting new seal.
9. Immerse new parts of seal in clean refrigerant oil. Insert 0-ring (11) into groove of housing cover.






1 Nut on drive body
2 Spring plate
3 Coupling body
5 Locking ring
6 Bearing for coupling body
7 Pulley
8 Screw with lock
9 Magnetic coil
10 Locking ring
11 O-ring
12 spring
13 Shaft seal
14 Drive shaft
20 Housing cover






10. Insert shaft seal (13) into tool, and slip on shaft. Keep turning tool to the left until shaft seal engages in shaft. Only then turn tool counterclockwise for disconnection from lugs of shaft seal and remove.
11. Introduce slip ring (12) by means of tool into bore until ring touches shaft seal. Make sure that 0-ring (11) is not pushed out of groove.

Attention! Protect sealing surface of slip ring (12) against any damage, such as scratches.

12. Introduce locking ring (10) with flat side in downward direction into bore until locking ring rests on slip ring. Then push with locking pliers or a screwdriver on locking ring until locking ring snaps into groove.
13. Install spring assembly.

Check Refrigerant Compressor for outside leaks:

Note: When working on shaft seal it is recommended to drain all the refrigerant oil from refrigerant cornpressor. Determine drained quantity of refrigerant oil and fill same quantity of fresh refrigerant oil into refrigerant compressor. For details refer to section "Checking oil level in refrigerant compressor".

14. Check installed sealing ring (2) on refrigerant compressor (1) for condition and renew, if required, also provide with refrigerant oil.






1 Refrigerant compressor
2 Sealing ring
3 Suction connection
4 Pressure connection






15. Screw pressure test plate (3) with available hex screw to refrigerant compressor (1).
16. Connect inner connection of pressure test plate to service line (41 of service unit.
17. Let refrigerant vapor flow into refrigerant compressor. A bottle or filling cylinder pressure of above 4 bar gauge pressure is required
18. In installation position of refrigerant compressor, rotate compressor shaft several times manually in direction of rotation.
19. Check refrigerant compressor for leaks with leak tester.
20. Close valve on service unit or on filling cylinder again and remove hose line from pressure test plate.
21. Remove pressure test plate, but only directly prior to installing pipe line.
22. For details concerning oil capacity of refrigerant compressor refer to checking "Oil level in refrigerant compressor".