Operation CHARM: Car repair manuals for everyone.

B. Remove Regulator With Alternator In Engine Compartment

Note:

^ Model 163: Proceed to step 1.

^ Model 463: Proceed to step 2.

^ Models 211 4Matic/215/220: Proceed to step 3

1. Model 163: Remove alternator from vehicle (refer to WIS: AR15.40-P-5032GH) then proceed to Subject D, Replace Regulator.

2. Model 463:

^ Disconnect battery ground cable from battery terminal.





^ Remove right air intake duct (arrow, Figure 2).

^ Remove front section of upper engine cover (A, Figure 2).

^ Remove engine fan refer to WIS: AR20.40-P-5660C.

^ Remove engine belt from alternator pulley (do not remove belt from vehicle) refer to WIS: AR13.22-P-1202B

Note (regarding above WIS instructions):

When removing engine belt from alternator pulley, do not remove fan shroud.





^ Remove upper alternator mounting bolt (B, Figure 3).

^ Loosen lower alternator mounting bolt (A, Figure 3) from mounting bracket (arrow).





^ Disconnect circuit 61 harness connector (arrow, Figure 4) from regulator. Remove circuit 30 terminal cover (A)

^ Remove nut (arrow, Figure 5) then remove circuit 30 harness connector (A) from terminal stud.

^ Remove lower alternator bolt (A, Figure 3) from mounting bracket.

^ Remove alternator (B, Figure 5) from mounting brackets.

Note:

Do not remove alternator (B) from engine compartment.





^ Position alternator (A, Figure 6) with regulator facing up and pulley facing down.
Regulator will be replaced with alternator in engine compartment (proceed to Subject D).

Note:
Replacement of engine belt is not included in this campaign.

3. Models 211 4Matic/215/220:

^ Disconnect battery ground cable from battery terminal.





^ Remove right air intake duct (arrow, Figure 7).

^ Remove front section of upper engine cover (A, Figure 7).

^ Models 215/220 AMG only:

^ Remove supercharger belt from vehicle refer to WIS: AR13.21-P-1202RVK.





^ Remove cap (arrow, Figure 8) on idler pulley (A).





^ Remove idler pulley bolt (arrow, Figure 9) and idler pulley (A).

Installation Note:

When reinstalling, torque bolt (A) to 68 Nm.

^ Remove engine belt from alternator pulley (do not remove belt from vehicle) refer to WIS: Group 13.22





^ Model 211 4Matic only: Unclip heater hose (A, Figure 10) from mounting clip (arrow).

Note:
Replacement of engine belt and/or supercharger belt are not included in this campaign.





^ Disconnect circuit 61 harness connector (arrow, Figure 11) from regulator.

^ Raise vehicle on vehicle lift then remove lower (center) engine cover.





^ Remove circuit 30 terminal cover (A, Figure 12).

^ Remove nut (arrow, Figure 12) then remove circuit 30 harness connector (A) from terminal stud on alternator (B).





^ Loosen upper alternator mounting bolt (B, Figure 13).

^ Remove lower alternator mounting bolt (A), then remove upper alternator mounting bolt (B).

^ Remove alternator from mounting brackets.

Note:
Do not remove alternator from engine compartment.





^ Position alternator (A, Figure 14) with regulator facing up and pulley facing down. REGULATOR WILL BE REPLACED WITH ALTERNATOR IN ENGINE COMPARTMENT (proceed to Subject D).