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If one o-ring has 'fallen out' then you have got to view all of them as suspect
(a) as they should all be the same through the chain links
(b) if the link has been fitted properly them the compression of the failed ring should be the same as the rest of the chain.
If it was a Regina chain then the rings at the link can be fitted the 'wrong way round' which will make them fail very early, if this is the case then the rest of the chains rings will be OK.
DID use a common ring through the chain.
Again the compression at the link is important for DID 525 HV3 the distance between the outer surfaces of the end plates should be 19.6 mm +/- 0.1mm, for Regina 525 ZRPK it's 22.7 mm +/- 0.15mm.
This is from Ducati and it's in a release excitingly titled "Final Drive Chain Maintenance Precautions All Models and Model Years (Except XDiavel) Service Repair Bulletin SRV-SRB-18-030"
Chains are a bit more tetchy than they used to be !!
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Last edited by Nickj; 04-09-2020 at 03:59 PM..
Reason: cite source
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