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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic eccentric shimming method
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<blockquote data-quote="timetraveller" data-source="post: 136022" data-attributes="member: 456"><p>Hello Spqreddie, I am not sure that I understand what has gone wrong. The only shims in the steering parts are those for the eccentrics. There are no other shims on any of the other spindles. If you take the FF33 and insert it into the bottom of the main steering lug then it should just appear in the middle of the hole at the top of the steering lug. Prior to this the FF36 washer and all parts of the lower cup and cone type bearing will have been placed on the FF33. The upper cup bearing, FT128 should be in place. If the top of FF33 is not in the middle of the top cup bearing then that suggests that some part of the lower bearing is not fitted correctly. Lower the FF33 slightly so that the bearings are loose, but don't fall out, and then see if the top of the FF33 tube is in the middle of the top cup bearing. If it is then, to me, that suggests that at least one part of the lower cup and cone is not properly into its housing. </p><p>One other thing to be aware of is that the felt washers, to protect the lower cup and cone, are often/always supplied much too thick. Roughly double the thickness needed. Make sure that felt washer is not causing trouble.</p><p> Come back with more information after you have tried that.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 136022, member: 456"] Hello Spqreddie, I am not sure that I understand what has gone wrong. The only shims in the steering parts are those for the eccentrics. There are no other shims on any of the other spindles. If you take the FF33 and insert it into the bottom of the main steering lug then it should just appear in the middle of the hole at the top of the steering lug. Prior to this the FF36 washer and all parts of the lower cup and cone type bearing will have been placed on the FF33. The upper cup bearing, FT128 should be in place. If the top of FF33 is not in the middle of the top cup bearing then that suggests that some part of the lower bearing is not fitted correctly. Lower the FF33 slightly so that the bearings are loose, but don't fall out, and then see if the top of the FF33 tube is in the middle of the top cup bearing. If it is then, to me, that suggests that at least one part of the lower cup and cone is not properly into its housing. One other thing to be aware of is that the felt washers, to protect the lower cup and cone, are often/always supplied much too thick. Roughly double the thickness needed. Make sure that felt washer is not causing trouble. Come back with more information after you have tried that. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic eccentric shimming method
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