Inside the gearbox....

[ChrisH]

I found this little blighter lurking beneath the first gear pinion on the output shaft..
Anyone like to make a stab at the reason this (plain) bush ended up in this state, cos it's got me completely bolloxed. Never seen anything like it, looks like it's been eaten... the way I am with this engine, it's probably a TA eating virus. Still I reckon a good dunk in the Atlantic ocean should cure it....

[wheeliebin]

Yuk, are you sure that came from INSIDE the engine ? Doesn't look like it.

Even my '49 Triumph engine, run on monograde oil and stood for thirty years, still has clean internals.

[Fatjohn]

[piguglyshandydrinker]

Doesn't look healthy!!!

Does the bike have known history? (ie been sat at the bottom of a lake for 2 months!)

I suppose youv'e dropped the oil, if now what about getting an oil sample carried out, sending pic's of the bush.

Just for a laugh (not) try sending pics to Honda Tech dept.

What engine prob's have you had to require a strip?

Phil

[ChrisH]

Your views seem to concur with my own! I brought the bike back from the UK in July - went perfectly. Did some miles here until the clutch started getting snatchy, and the engine made queers noises. Stripped it down and found a small lump of hard metal embedded in the oil pump and the clutch basket bush had picked up metal. Everything else was fine!!! So I got a new clutch, bush and oilpump from David Silver (highly recommended - very helpful) then later found this bush when cleaning up the gear shafts. Every other bush in the gearbox is perfect... Consensus round here is that it was a duff bush from the start - can't find any other explanation. There is no sign of anything breaking in the engine, and it doesn't look like it's been thrashed/abused.... My own theory is that somehow some bit of metal got into the engine, oil pressure was reduced and caused the clutch bush to be starved of oil ( feed to the input shaft is via a small drilling in the casing ) and amazingly didn't damage the mains, cams etc. The gearbox pinion bush is unconnected I reckon....You're right Phil, I should have had the oil tested. The crowd I bought the bike off weren't very interested. I'd just like to have some idea of why this happened as it's costing me a bit to repair..... appreciate any thoeries!

[chris v]

Is it small enough to have been 'posted' in the oil filler hole?

[ChrisH]

Can't see it really, I think there may be an element of the Friday Special involved? S'pose anything's possible.....

[Recycler]

Had 3rd gear hardening give in on an XR600, but even then all bushes were fine.

I've still got 2 bushes and a circlip unused. Let me know if they are any use to you - I don't know if they also fit a Tranny.

part nos 23432-mk2-000 and 23432-mn1-670

circlip 90601-107-000

As PC Plod in Noddy says: 'What we have here is...................a mystery.'

[ChrisH]

Thanks Recycler - I ordered the bush from David Silver, just a shame I didn't notice it when I ordered the clutch and oil pump..... another week goes by with the TA off the road. Still it's getting a damn good clean up! I even ground the valves and put new oil seals on them! Don't think even Mr Plod can solve this one, it just better run Ok when it's back together - or I'm gonna tell Tessie Bear and Bumpy Dog, and Bumpy Dog is SO naughty he'll do just the most horrible thing to that bad engine...

[Recycler]

You've got kids too then.