8. Cylinder / Piston
8-6
Measure the piston outer diameter.
Caution
Service limit:
LA18W: 60.9 mm
Compare measured value with service limit to
calculate the clearance between piston and
cylinder.
Piston Ring Installation
Clean up piston top, ring groove, and piston surface.
Install the piston ring onto piston carefully.
Place the openings of piston ring as diagram shown.
Caution
z The measurement position is 10 mm
distance from piston bottom side, and 90°
to piston pin.
z Do not damage piston and piston rings as installation.
z All marks on the piston rings must be forwarded to up side.
z Make sure that all piston rings can be rotated freely after installed.
Top groove
2
nd
groove
Oil groove
Top ring
2
nd
ring
Oil ring
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