C 240 Wagon (203.261) V6-2.6L (112.912) (2003)
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14.
Remove hub (Figure 2, 1) using a socket and counter hold tool W112 589 07 40 00. Use a small magnet to remove flat washer from shaft.
Note:
There are two versions of the compressor shaft, a 7 mm hex and one with two flats. The shaft with two flats requires the use of socket W112
589 02 09 00.
To loosen the pulley:
Method A (Preferred): Hold the compressor shaft stationary and turn the drive hub counter clockwise to loosen. Turn the hub clockwise to tighten.
Method B: Hold the drive hub stationary and turn the compressor shaft clockwise to loosen.
Turn counter clockwise to tighten.
It is not a left hand thread. If the shaft breaks off the compressor should be replaced.
15.
Remove snap ring (Figure 2, 4) for pulley bearing.
16.
Remove belt pulley (Figure 2, 2) from the end of compressor housing.
Note:
Do not apply a pulling force in an axial direction to the refrigerant compressor shaft.
17.
Assemble the rubber dampers (Figure 2, 5) into new pulley the as shown in example A in Figure 3 and Figure 4. Make note of the direction of the
curvature of the rubber dampers and install them over the reinforcing webs in the pulley, not in the spaces between the webs.
18.
Install new belt pulley (Figure 2, 2) onto the end of compressor housing. Make sure it is the same diameter as the original, 100 mm, 110 mm or
120 mm (M271).
19.
Install the snap ring (Figure 2, 4) for pulley bearing with its flat side facing the refrigerant compressor. Make sure the snap ring is seated correctly
in the groove.
Note:
Use snap ring pliers with 90° tips that have a minimum reach of 19 mm (0.75").
20.
Install washer (Figure 2, 3). Make sure it is flat against the shoulder of the shaft.
21.
Install hub (Figure 2, 1) so the drive fingers are inserted into the gaps between the ends of the rubber dampers. Screw the hub onto the compressor
shaft clockwise and torque to 35 Nm. The hub continues to tighten when in the compressor is in operation.