SHERCO 125 SE-R 2017, Руководство по ремонту

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125 SE-R
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ENGINE PART CONTROL
❱❘ Crank head lateral clearance
- Measuring the lateral clearance of the crank
head [A].
Crank head lateral clearance:
Standard: 0.7 mm - 0.9 mm
Tolerance limit: 1.15 mm
If the clearance exceeds the tolerance limit,
replace the crankshaft.
❱❘ Control of the crankshaft radial
runout
- Set the crankshaft on an alignment device or on
shims laid out in a “V” pattern, and place a
gauge as shown on the image.
- Now slowly turn the crankshaft. The maximum
difference between the measurements
corresponds to the level of crankshaft
eccentricity.
Out-of-roundness:
Standard: 0.03 mm maximum
Tolerance limit: 0.05 mm
If the eccentricity is incorrect, replace the
crankshaft or else align it to ensure lying within
the tolerance limits.
❱❘ Piston
If you introduce a piston that has already been in
use, the following points would need to be
verified:
Apron: search for possible smears (clamping).
Slight smears may be removed with a soft stone.
Segment grooves: The segments must not snag
in their groove. To clean in this spot, an older
segment or emery cloth (400-grain).
The segment retainers must be snugly fastened
and not be worn parts.
Segments: Verify the condition and clearance at
the cross-section.
❱❘ Cross-sectional clearance
- Insert the segment into the cylinder and install it
with the piston (at approx. 10 mm from the upper
A
A A