Engine Parts Control; Connecting Rod Assembly; Balance Masses, Verification Of The Exterior Side; Radial Clearance Of The Crank Head - SHERCO 125 SE FACTORY Workshop Manual

ENGINE PARTS CONTROL

❱❘ Connecting rod assembly
• If the roller bearings have been changed, then the
internal ring that sits against the balance weight
must also be changed.
Heat the R464 tool to roughly 150°C, then
•
immediately insert it onto the internal ring.
Ensure that the tool sits squarely on the ring in
order to more effectively transmit the heat and
extract the ring
• To install the new ring, heat the tool once again to
approx. 150°C. Next, insert the new ring and
immediately position it on the reach of the

connecting rod assembly

❱❘ Balance masses, verification of the exterior side
• Using a caliper, measure the outer distance of the
balance masses.
Exterior value: 57.0 +/- 0.1 mm
❱❘ Radial clearance of the crank head
• Install the crankshaft on the V and place a dial
[A]
gauge against the crank head.
[B]
• Push the crank head first toward the gauge
and then in the opposite direction. The
difference between these two measurements
corresponds to the radial clearance.
Crank head radial clearance:
Standard: 0.015 mm - 0.025 mm
Tolerance limit: 0.06 mm
If the radial clearance exceeds the tolerance limit,
the crankshaft must be replaced
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