X Series E83 X3 2.0d (N47) OFFRD
11 25 671
Replacing piston rings on all pistons (N47,
N47S)
Necessary preliminary tasks:
•
Remove pistons.
Remove all piston rings (2) with piston ring pliers (1).
Note:
It might not be possible to find the identification on used
piston rings.
Put aside piston rings in correct sequence and installation
position.
Installation:
Install piston rings with "TOP" to piston top.
1.
Taper face compression ring
2.
Oil scraper ring
3.
Bevelled roof ring with rubber-lined spring
Arrange piston ring contact points with offset of approx. 120
°
to
one another, but not over gudgeon pin eye.
Installation:
Marking (TOP) must point towards piston crown.
The oil scraper ring has no identification marking and can be
installed in any position.
RA Replacing piston rings on all pistons (N47, N47S)
BMW AG - TIS
05.02.2013 21:26
Issue status (12/2007) Valid only until next DVD is issued
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