Engine Part Control; Connecting Rod Assembly; Bal A Nce Masses, Veri F I C Ati O N Of The Exteri O R Si D E; Radial Clearance Of The Crank Head - SHERCO 125 SE-R 2017 Workshop Manual

ENGINE PART 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 calliper, 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
gauge [A] against the crank head.
- Push [B] 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.
64.30
mm
B A
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