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CYLINDER AND PISTON
Piston pin
1. Inspect:
Piston pin
Blue discoloration/grooves →
Replace, then inspect the lubrication
system.
2. Measure:
Piston pin-to-piston clearance
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)
Measure the piston inside diameter b.
Calculate the piston pin-to-piston clear-
ance with the following formula.
Piston pin-to-piston clearance =
Bore size (piston pin) b –
Outside diameter (piston pin) a
If out of specification, replace the piston.
Piston pin-to-piston clearance:
0.002 ~ 0.017 mm
(0.00008 ~ 0.00067 in)
<Limit>: 0.07 mm (0.003 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
located on the upper side of the rings.
Lubricate the piston and piston rings liberally
with engine oil.
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