12 31 020 Removing and installing or replacing alternator (N12, N14, N16, N18)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary work:

N14 and N18 only

Release screw.

Remove holder (1) and place to one side.

Fig 1: Locating Holder Screw

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Use the spanner (2) to bring the belt tensioner (1) into the working position and hold.

Secure installation position of belt tensioner (1) by sliding locating pin (3) in direction of arrow.

WARNING: Danger of injury!
Remove spanner (2) again from the belt tensioner (1).

Remove drive belt (4) from alternator.

Fig 2: Securing Installation Position Of Belt Tensioner By Sliding Locating Pin

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Release connector and remove.

Release nut (1) and remove positive battery cable.

Tightening torque 12 31 2AZ .

Loosen screws (2) and remove the belt tensioner (3).

Tightening torque 11 28 1AZ .

Fig 3: Identifying Belt Tensioner With Nuts And Screws

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Loosen the screw with a joint extension (1).

Tightening torque 12 31 1AZ .

IMPORTANT: Do not bend refrigerant line.
Bending the line can cause water-tightness!

Remove alternator.

Fig 4: Loosening Screw With Joint Extension

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