Service Manual

4-20 ENGINE TOP END
Piston Pin, Piston Pih Hole, and
Connecting Rod Wear
@Remove the piston pin.
l Measure the diameter of the piston pin with a micrometer at several
points.
*If the outside diameter is less than service limit, replace the piston pin.
Piston Pln Outslde Diameter
Servke Llml: 16.975 mm (0.6682 In)
l Measure the inside diameter of the piston pin hole at several points on
both side. Use a dial bore gauge.
*If the inside diameter is more than the service limit, replace the piston.
Piston Pin Hole lnslde Diameter
Service Llmlt: 17.041 mm (O-.6709 In)
0 Measure the inside diameter (A) aof the small end of the connecting rod
at several points. Use a dial bore gauge.
*If the inside diameter is more than the service limit, replace the
connecting rod.
Connecting Rod Small End lnrlde Diameter
Servke Llmlt: 17.051 mm (0.6713 In)
Piston Diameter
*Measure the outside diameter of the piston 11 mm (0.43 in) up from
the bottom of the piston at a right angle to the direction of the piston
pin hole.
*If the measurement is fess than the service limit, replace the piston.
PbtonDhmobr
Senke Llrnlt 75.875 mm (2.9672 In)
Cylinder Inside Diameter
l Clean and measure the cylinder inside diameter.
0 Use a dial bore gauge to measure front-to-back and side-to-side at the
points shown below.
*If any of the cylinder bore measurements is greater than the service
limit* the cylinder must be bored to the next oversize and then honed
(see Cylinder Boring and Honing).
Cyllndar lnslde Diameter
standard:
Swvke LImIti
76.000 mm (2.9921 in)
76.067 mm (2.9948 ln)
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