3 Series E92 325xi (N53) COUPE
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Replacing piston rings on all pistons (N53)
Necessary preliminary tasks:
•
Remove all pistons.
Measuring axial clearance of piston rings in piston ring groove.
Technical Data.
Note:
It is not possible to measure the axial clearance of the oil scraper
rings.
Remove compression ring and stepped ring upwards with piston
ring pliers.
Oil scraper ring comprises two steel band rings and a support
spring.
Note:
Oil scraper ring cannot be removed with piston ring pliers.
Put aside piston rings in correct sequence and installation
position.
It might not be possible to find the identification on used piston
rings.
Installation:
New pistons may only be installed together with new piston rings.
RA Replacing piston rings on all pistons (N53)
BMW AG - TIS
27.01.2013 23:55
Issue status (12/2007) Valid only until next DVD is issued
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