Remove/Install A/C Compressor

Oil Type:
for approved refrigerant oils refer to specifications for service products.

Oil Capacity:
Oil quantity, new in refrigerant compressor
- 170 cc

Tightening Torques:
Screws M 12 refrigerant compressor to carrier
- 60+10 Nm (6 + 1 k pm)
Screw pipe line to refrigerant compressor
- 50±3 Nm (5 + 0.3 k pm)
Hose line from evaporator to pipe line 7/8"
- 29-37 Nm (2.9 - 3.7 k pm)
Hose line from pipe line to condenser 3/4"
- 24-28 Nm (2.4 - 2.8 k pm)

Special Tool:
Holding device for refrigerant compressor
- 116 589 14 31 00
Pressure test plate for refrigerant compressor
- 109 589 00 25 00

Conventional Tools:
Double open end wrench 1/2" x 9/16", 5/8" x 3/4", 7/8" x 15/16", 1" x 1 1/8", Socket 14 mm, 3/8" square
Assembly tester with 3 filling hoses or evacuating and filling device for air-conditioning system, e.g. made by Christof Fischer, Augsburger Str. 289, 7000 Stuttgart 60

Attention! If the refrigerant compressor is replaced, e.g. as a result of blocking, always renew pipe line with hoses on refrigerant compressor on principle, since there is always the possibility that small parts (abrasives) of refrigerant compressor may enter the pipe line.

The receiver dehydrator and the expansion valve are also to be replaced.

In addition, check function and direction of rotation of auxiliary fan by means of 52 °C and 100 °C switch.

Removal:
1. Cover front fender.
2. Pull plug from electromagnetic coupling and drain air-conditioning system.
3. Loosen screw (5 and 6).
4. Loosen nut (3) on tensioning screw (4). Swivel refrigerant compressor (1) inwards and remove V-belt (2).






1 Refrigerant compressor
3 Nut
4 Tensioning screw
5 ScrewM 12 x 170
6 Screw M 12 x 140
7 Pipe line
8 Screw M 10 x 30






1 Refrigerant compressor
2 V-belt

5. Unscrew pipe line (7) and close connections with plugs.
6. Screw out screw (5 and 6) and remove refrigerant compressor (1).
7. If the refrigerant compressor is renewed or reconditioned, refer to section "Checking oil level in refrigerant compressor" at Service and Repair, "Reconditioning of Refrigerant Compressor".






7 Pipeline

Installation:
8. Check 0-rings on refrigerant compressor.
9. Provisionally screw refrigerant compressor to carrier by means of screws (5 and 6), tensioning screw (4), spacing sleeve (9) and spacing washers (10, 11 and 12).





1 Refrigerant compressor
3 Nut
4 Tensioning screw
5 Screw M 12 x 170
6 Screw M 12 x 140
9 Spacing shim
10 Spacing washer 5 mm
11 Spacing washer 13 mm
12 Spacing washer 9 mm
13 Spring washer

10. Screw nut (3) to tensioning screw (4)
11. Mount V-belt (2) and tenjion with nut (3)






1 Refrigerant compressor
2 V-belt
3 Nut
4 Tensioning screw
12 Spacing washer 9 mm

12. Tighten screws (5 and 6).
13. Remove closing caps on pipe line. Provide 0-rings with refrigerant oil, screw-on pipe line and tighten
14. Mount plug on electromagnetic coupling.
15. Evacuate system and fill up again. Procedures

Attention! If oil is filled into refrigerant compressor, handle compressor like a new refrigerant compressor, that is, during initial operation engine should run at idle for 4 minutes only.

16. Check air conditioning for function and leaks. Refer to "Function Check" and "Leak Tests". Testing and Inspection