Electromagnetic Clutch, Changing, Sanden

To Remove
(compressor model Sanden SD 510 or SD 709, removed from car)

1 Mount the compressor in a vice.
Remove the center nut from the compressor shaft.
Tools:
Socket Nv 3/4" (19 mm)
Key 83 93 373
2 Remove the compressor clutch driver.
Tools:
Socket Nv 3/4" (19 mm)
Puller 83 93 381
In order to install SD 709 as well, the three puller holes must be drilled out to Phi 9 mm.
3 Remove the key from the shaft.
4 Remove retaining rings from bearings and rotor.
Tool: Universal circlip pliers.
5 Compressor SD 510:
Install puller 83 93 399.
Compressor SD 709
Install puller 83 93 399 together with shanks and presser 82 92 567.







6 Remove the rotor section.
7 Compressor SD 510:
Remove the three screws securing the coil to the compressor.
Compressor SD 709:
Remove the circlip securing the coil to the compressor.
8 Remove the screw and clip holding the cable.
9 Lift off the coil.







Installation
1 Install shims to adjust clutch play.
The same number of shims should be reinstalled.
2 Install the coil.

Important : The guide in the coil should be inserted in the hole in the compressor housing.

3 Compressor SD 510:
Tighten the three screws.
Compressor SD 709:
Install the circlip.
4 Install the clip and screw for the cable.
5 Place the rotor section on the compressor. Place the presser and intermediate ring 83 93 407 (set) for SD 510 or 8292559 for SD 709 in the rotor section. Note that the intermediate ring is oriented so that the compressive force is exerted on the inner ring bearing. Tap down the rotor section using a hammer until it stops against the compressor housing.
6 Install circlips for bearing and rotor.
7 Install key.
8 Place the compressor clutch driver on the shaft. Install adapter 8393415. Tap down the driver using a hammer so that it stops against the shims on the shaft.
9 Install the center nut.

Tightening torque 38 Nm (28.2 lbf ft).

10 Check the play between the driver and rotor.
Play should be between 0.40 - 0.80 mm. (0.16"- 0.31").

If play is not correct, remove the driver and adjust the number of shims.