Installing The Piston And Cylinder - Yamaha T135SE Service Manual

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YamahaT135.COM
Yamaha T135 Service Manual
CYLINDER AND PISTON
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4. Calculate:
9piston-pin-to-piston-pin-bore clearance
Out of specification → Replace the piston
pin and piston as a set.
Piston-pin-to-piston-pin-bore clearance =
Piston pin bore diameter b b –
Piston pin outside diameter a a
Piston-pin-to-piston-pin-bore clear-
ance
0.002 – 0.018 mm
(0.0001 – 0.0007 in)
<Limit>: 0.068 mm (0.027 in)
EAS00267
INSTALLING THE PISTON AND
CYLINDER
1. Install:
9top ring 1
92nd ring 2
9oil ring expander 3
9lower oil ring rail 4
9upper oil ring rail 5
NOTE:
Be sure to install the piston rings so that the
manufacturer's marks or numbers face up.
2. Install:
9piston 1
9piston pin 2
9piston pin clip 3
NOTE:
9Apply engine oil to the piston pin.
9Make sure the mark a on the piston points
towards the exhaust side of the cylinder.
9Before installing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the clip from falling into the crankcase.
ENG