1 Series E81 130i (N52K) 3-door
Determine end clearance with a feeler gauge.
Note:
Schematic diagram of piston rings.
Installation:
Piston rings with "TOP" identification must point to piston crown.
1.
Plain compression ring
2.
Stepped ring "TOP"
3.
U-flex ring
Note:
The U-flex ring comprises two steel band rings (1) and a support
spring (2).
Installation:
Insert support spring (2) into piston ring groove and then fit steel
band rings (1) so that contact points are offset by approx. 120
°
.
The contact points (1) of the piston rings must be arranged offset
by approx. 120
°
. However, the contact points (1) must not be
arranged over the piston pin boss.
Note:
Picture shows N52.
RA Replacing piston rings on all pistons (N52K)
BMW AG - TIS
22.01.2013 03:24
Issue status (12/2007) Valid only until next DVD is issued
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