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Old 11-30-2011 | 08:19 AM
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BobV1700
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From: NottinghamNottinghamshire, UNITED KINGDOM
Default RE: YS 110s problem

Pete,<div>
</div><div>Ive removed both bearings now and can see that the rear bearing cage (some sort of hard plastic material) has partly broken, which probably explains the damaged piston, ring and bore damage. I noted that there is no damage to the valve facings which would have shown more if it had been the glow plug element breaking off damaging the 'top end' rather than the 'bottom end' which it clearly has. </div><div>
</div><div>The brass insert sleeve just behind the front oil seal is clearly visible with the crank pressure hole close to the 10 minutes past the hour position. I can' t  tell where it should be but the pressure hole is completely blocked and not allowing any air to pass. </div><div>
</div><div>1) Is it possible to heat up the crankcase and thus allow re-alignment of the brass sleeve and hole or is  a return to dealer job?.</div><div>
</div><div>2) In view of possible complete rebuild does the front oil seal need to be removed (and how)?.</div><div>
</div><div>Gents. I appreciate your help here as I'm a pensioner and could do with spending only enough to do the job properly.</div><div>
</div><div>Thanks Bob Vaughan</div><div>
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