Chapter 8 – Cylinder and Piston
Service Manual AJP PR3/PR4 8 - 8
the piston has been exceeded, it must be
inspected the inner diameter of the head of
the connecting rod which encompass the
piston pin.
With regard to the inspection of the
connecting rod, more specifically its head,
which will also enter the pin of the piston shall
be checked if the hole have signs of wear /
seized or bluish.
Measure the inner diameter and then
calculate the clearance between this diameter
and the outer diameter of piston pin.
This clearance should not exceed the value of
the service limit. If it exceeds, it must be
replaced together with the pin of the piston
and the piston.
Use limit of clearance between O.D.
connecting rod head and O.D. piston pin:
0,10mm
CYLINDER AND PISTON
INSTALLATION
If necessary, use a chisel to remove any
residue of the old gasket between the two
crankcases and completely clean the contact
surface, always being careful not to damage.
Apply a bit of silicone on the area of the
gasket in the middle of the crankcases to
ensure proper sealing.
