E 320 4MATIC Wagon (210.282) V6-3.2L (112.941) (1998)
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Ensure malfunctioning regulator is inspected (refer to step 3 of this section) prior to replacing.
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Ensure circuit 30 systems are reinitialized and fault codes are erased (refer to steps 8 and 9 of this section).
1.
Remove the two nuts (1, Figure 16) from studs and one Philips head screw (2); remove the plastic cover from the rear of the alternator.
Note:
Observe which nut is removed from either stud.
2.
Remove three Philips head screws (2, 3, Figure 17); remove voltage regulator (1) from the alternator.
3.
Inspect wear shape (arrow, Figure 18) of carbon brushes: If brushes have worn at an angle (arrow), alternator bearing damage is indicated and the
alternator must be replaced. If brushes wear is normal, continue with regulator replacement.