Installing Piston - BMW R 1150 RT Repair Manual

Installing piston

11 25 000
e
Attention:
Always install piston and cylinder as a matched pair.
Do not mix up pistons and piston pins.
•
Turn oil scraper ring so that gap (arrow) is at top.
•
Install piston rings with gaps offset by 120°.
Assembly position X = installation toward exhaust
side
e
Attention:
Make sure that retaining rings are properly seated
on piston pin.
Oil the friction faces.
Always use pistons of the same weight class in any
one engine.
Markings: ..................................................... + or—
( 11.11)
a
Piston size identification:
On piston crown A, B, AB (for either A or B cylinder),
and on cylinder A, B.
11.56
X
R21110060