3 Series E46 316i (M43TU) SAL
11 25 671
Replacing piston rings on all pistons (M43 /
M43TU)
(piston removed)
Remove piston rings (1 und 2) with piston ring compressing
pliers.
Note:
It might not be possible to find the identification on used
piston rings.
Put aside piston rings in correct sequence and installation
position.
New pistons may only be installed together with new piston
rings.
M43 B16 / B18 piston diameter 84 mm
Installation:
Insert piston rings with the word "TOP" facing piston crown.
1.
Plain compression ring
2.
Stepped taper-face ring "TOP"
3.
Steel band ring with support spring
Arrange piston ring contact points with offset of approx. 120
°
to
one another, but not over piston pin eye.
Installation:
The oil scraper ring (version: steel band ring with support
spring) consists of two steel band rings (1) and one support
spring (2).
Fit support spring (2) in piston ring groove and then mount
steel band rings (1) so that gaps are offset approx. 120
°
.
RA Replacing piston rings on all pistons (M43 / M43TU)
BMW AG - TIS
19.01.2013 10:40
Issue status (12/2007) Valid only until next DVD is issued
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