CYLINDER AND PISTON ENG
Piston pin
1.Inspect:
●Piston pin
Blue discoloration/grooves →
Replace, then inspect the lubrication system.
2.Measure:
●Piston pin outside diameter
●Piston pin bore inside diameter
Measurement steps:
●Measure the piston pin outside diameter a.
If out of specification, replace the piston pin
Outside diameter (piston pin): 12.996 ~ 13.000 mm (0.5117 ~ 0.5118 in) <Limit>:12.976 mm (0.5109 in)
●Measure the piston inside diameter b. If out of specification, replace the piston.
Inside diameter (piston): 13.002 ~ 13.013 mm (0.5119 ~ 0.5123 in)
<Limit>: 13.045 mm (0.5136 in)
ASSEMBLY AND INSTALLATION
Piston
1.Install:
●Piston rings (onto the piston)
NOTE:
●Be sure to install the piston rings so that the manufacturer’s marks or numbers are located on the upper side of the rings.
●Lubricate the piston and piston rings liberally with engine oil.
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