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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lay shaft bearing failure - again!
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<blockquote data-quote="davidjoyner" data-source="post: 27948" data-attributes="member: 1156"><p>After replacing a blown big end about 10,000 mls ago I put the lay shaft in the wrong way around with consequent lay shaft bearingfailure (non drive side) about 3000 mls later on a trip to Ireland. Used the "riders list" and was helped by Peter in Dublin - wonderful host - but I still had the lay shaft in backwards. I then stacked the bike into a roundabout on the way home- boy does it hurt as you get older! While the repair work was being done I had the gearbox looked over by Conways - sorted! 6000 mls later I've blown that bearing again! The sprocket came loose got a bit beaten up on the end face against the output gear,also the seal was quite deep in the casing, net result the oil was lost and back home on the RAC lorry --------and NZ are world champions------what a grinder of a game, anyway where was I?</p><p>The question finally - is there a good publication that will tell me where the mashed up shim went and how much end float etc. Also the sprocket has been rubbing against the casing, what caused that! </p><p>This time I'm going to put sealed bearings in - could this be my next disaster! I've got to avoid the sniggering from the family when the RAC truck rattles up outside..currently about every 18mnths!</p></blockquote><p></p>
[QUOTE="davidjoyner, post: 27948, member: 1156"] After replacing a blown big end about 10,000 mls ago I put the lay shaft in the wrong way around with consequent lay shaft bearingfailure (non drive side) about 3000 mls later on a trip to Ireland. Used the "riders list" and was helped by Peter in Dublin - wonderful host - but I still had the lay shaft in backwards. I then stacked the bike into a roundabout on the way home- boy does it hurt as you get older! While the repair work was being done I had the gearbox looked over by Conways - sorted! 6000 mls later I've blown that bearing again! The sprocket came loose got a bit beaten up on the end face against the output gear,also the seal was quite deep in the casing, net result the oil was lost and back home on the RAC lorry --------and NZ are world champions------what a grinder of a game, anyway where was I? The question finally - is there a good publication that will tell me where the mashed up shim went and how much end float etc. Also the sprocket has been rubbing against the casing, what caused that! This time I'm going to put sealed bearings in - could this be my next disaster! I've got to avoid the sniggering from the family when the RAC truck rattles up outside..currently about every 18mnths! [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lay shaft bearing failure - again!
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