Z Series E85 Z4 3.0Si (N52) ROADST
If necessary, replace connecting rods.
Important!
Connecting rods are divided into weight categories and are
only available as a set.
Old and new connecting rods must not be installed in mixed
combinations.
Installation:
The piston pin must be able to be pressed through the liner by
hand with little force and must not display any significant play.
Measure piston installation clearance:
Measure piston diameter with micrometer at measuring point A
from bottom edge of piston and offset at 90
°
to the axis of the
piston pin.
Piston diameter at measuring point A.
Adjust micrometer to cylinder bore of engine block. Set internal
caliper on micrometer to zero. Measure bottom, center and top of
cylinder bore in direction of travel and direction of engine rotation.
Diameter of cylinder bore.
Piston installation clearance.
Total permissible wear tolerance.
If necessary, replace piston.
Warning!
Protective goggles must be worn.
Insert piston circlip (2) into groove (1) of special tool 11 4 493 .
Bring piston circlip into assembly position.
RA Removing and installing/replacing all pistons (N52)
BMW AG - TIS
16.02.2013 22:01
Issue status (12/2007) Valid only until next DVD is issued
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