Removing The Piston; Checking The Cylinder And Piston - Yamaha YZF-R15 Service Manual

Hide thumbs Also See for YZF-R15:
Table of Contents

Advertisement

REMOVING THE PISTON

1. Remove:
• Piston pin clips "1"
• Piston pin "2"
• Piston "3"
CAUTION:
Do not use a hammer to drive the piston pin
out.
NOTE:
• Before removing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the piston pin clip from falling into the crank-
case.
• Before removing the piston pin, deburr the pis-
ton pin clip's groove and the piston pin bore ar-
ea.
2
3
2. Remove:
• Top ring
• 2nd ring
• Oil ring
NOTE:
When removing a piston ring, open the end gap
with your fingers and lift the other side of the ring
over the piston crown.
1
5-23
CYLINDER AND PISTON

CHECKING THE CYLINDER AND PISTON

1. Check:
• Piston wall
• Cylinder wall
Vertical scratches → Replace the cylinder,
and replace the piston and piston rings as a
set.
2. Measure:
• Piston-to-cylinder clearance
s s s s s s s s s s s s s s s s s s s s s s s s s s
a. Measure cylinder bore "C" with the cylinder
bore gauge.
NOTE:
Measure cylinder bore "C" by taking side-to-side
and front-to-back measurements of the cylinder.
Then, find the average of the measurements.
Bore
56.985–57.010 mm
Taper limit
0.05 mm
Out of round limit
0.05 mm

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Yzf-r15 2008

Table of Contents