S 320 LWB (140.033) L6-3.2L (104.994) (1995)
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Alternator Pulley: Service and Repair
Preliminary work:
Poly V-belt slackened
Engine compartment paneling removed
Quiescent current retention unit
disconnect, connect.
Ground cable at battery
disconnect, connect.
Collar nut (1)
unscrew, screw on, tightening torque 80 Nm.
Use socket (10 mm) with internal serrations together with reversing ratchet to hold the shaft (2).
Poly V-belt pulley (3)
take off, fit on.
The poly V-belt pulley (3) is subject to very diverse stresses. The level of the stresses depends primarily on driving conditions. For this reason, when
reconditioning generators after mileages of more than 60,000 (100,000 km) also renew the poly V-belt pulley (3).
Commercially available tester
Quiescent current retention unit
e.g. Hans Zeheter CMP 12.2
Special tool
