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The new/current bellows variant -B- is fitted with only one continuous bellow. Using the bellows version -B-, the following parts have been changed:
-
Omission of bellows guide on the brake pedal push rod (No. 10 in the first version)
-
The bellows connection is no longer directly to the body but to a sleeve (pipe) -7-.
In the case of replacement
Variant A: First version (spare parts not included)
The 2 rubber bellows -1 and 2- on the brake booster and on the body are no longer available for vehicles with bellows variant A (first version).
For assembly work in this area, the 2 rubber bellows -1 and 2 - and the grommet (rubber groove ring) -3- must be removed and the spare variant A1
must be installed in its place.
This is a source reference. Confirm exact model applicability in the original material.