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 Topic: Gearbox sprocket shaft seal leaking 







wb

 
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wb » Sat Jun 10, 2006 4:18 pm

OK. I very carefully installed the replacement seal (taped the splines and lubed the lip before sliding on. No problem. Just taken it for a test ride though and sure enough it's leaking copiously from the seal again Confused So I have a couple of questions:

1. can anyone give me the exact dimensions of the OEM honda seal? The one fitted, and therefore the one I've replaced, was a 25/45/7. Acording to the receipts I have with it, the motor was completely rebuilt less than a year ago, so I'm wondering if the builder used the wrong seal and I've simply replicated their mistake by buying a seal of the same dimensions? The 7mm wide seal seems to sit a little recessed into the hole in the engine cover, and on closer inspection of the shaft i'm thinking maybe the oil feed whole on the outside of the bearing is nicking the seal (the lip of which should maybe sit further out on the shaft if the OEM seal is wider?)

2. Should there be about .5 - 1mm of lateral (ie: in & out) play in the shaft? I can pull it out that much, but there is no sideways movement at all and its rotation is very smooth. I'm assuming therefore that this is OK, but as this is my first foray into an NSR 'box I thought I should ask.

I'd really apprciate any help/pointers at all with this as it's impossible to properly sort the carburation etc. if I can't ride the bike to check things. I can't seem to access the online parts book either so I don't know if the info is in there? I get the main screen up but nothing happens when I click the links to the different pages for any of the models? Anyone have any ideas on this? I'd really appreciate it if anyone who can access teh manual could post up the relevant page on this thread.

I have ordered a new OEM seal from Apex leisure but I'm told it could be up to a fortnight before it arrives, so if I can fix it with a generic seal that would allow me to hopefully get the thing running and riding properly before then - enjoy the sunshine and all that...

I did notice quite an improvemnet from the general tinkering and tidying I've done so far on my short run - before the oil all over my boot wiped the smile off my face Evil or Very Mad ) Backing off the preload, rebound and compression adjusters so that verything wasn't set to maximum has certainly helped the handling, and it's running quite a bit better than it was too. Just need to get this seal sorted so that I can give it a sound thrashing to see how it compares with my beloved TZR250R 3XV's - very unfavourably at the moment I'm afraid to say, but I hope to be able to revise this opinion...

Plesae help me... Wink

Wb
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