Inspecting the crankshaft components
- Check the axial clearance on the connecting rod.
Characteristic
Standard clearance:
0.20 ÷ 0.40 mm
- Check the connecting rod diametrical clearance.
Characteristic
Standard clearance:
0.046 ÷ 0.076 mm
-Check the surfaces that limit the axial free-play
are not scored and measure the width of the crank-
shaft between these surfaces, as shown in the
diagram.
N.B.
BE CAREFUL NOT TO LET THE MEASURE-
MENT BE AFFECTED BY THE UNIONS WITH
THE CRANKSHAFT ENDS.
Characteristic
Standard dimensions:
63.6 - 63.45 mm
CAUTION
THE CRANKSHAFT CAN BE REUSED WHEN THE WIDTH FALLS WITHIN THE STANDARD VAL-
UES AND THE SURFACES ARE FREE FROM SCRATCHES.
Shimming
- Check the overall height of the crankshaft - shoulders - gear assembly.
Characteristic
Standard thickness:
71.804 - 72.000 mm
- Check that shim adjustment is free from scratches.
N.B.
IN CASE OF NEW UTILISATION, MAINTAIN THE FIRST FITTING POSITION.
Engine MP3 400 i.e.
ENG - 84
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