Author Topic: Sleeve gear bushes replacement  (Read 9565 times)

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #30 on: 24.02. 2012 20:53 »
Got the box apart and guess what the bushes are the long and short type. Also the play was awful but on measuring the shaft was 0.812 and the worn bush 0.816 only 4 thou *eek*. Still it does need doing so we will see how it is afterwards.

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #31 on: 29.02. 2012 12:37 »
Done. The first measurements were wrong the shaft was .809 and the old bush 0.816. New one is in, and a vast improvement some vibration still but no snatching from the primary chain.

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #32 on: 01.03. 2012 09:24 »
Tempting fate here all seems fine (whispering now )the box does not leak shhh

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Re: Sleeve gear bushes replacement
« Reply #33 on: 03.03. 2012 06:37 »
Did you put any oil in? ;)
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Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #34 on: 03.03. 2012 10:50 »
Cheeky sod. Yes I did 80/90 but I have used 140 before now.

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #35 on: 18.04. 2012 17:17 »
Update-replaced the primary chain as its well past its sell by date and noisy. Guess what yep the play is back in the clutch large amount of up and down play. WTF!! is going on here. Any other suggestions? the gearbox sprocket does not move so I am ruling out the main bearing.Surely the bushes cannot have worn out in one month can they???. God I wish I had some beer, and on top of it all work is being a pain in the a**e as well. I have got my health (still want a beer).
Andy

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Re: Sleeve gear bushes replacement
« Reply #36 on: 18.04. 2012 20:58 »
 It must be in the clutch bearing. What type of clutch? Most will wobble a bit even when new.
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Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #37 on: 19.04. 2012 11:34 »
Its the four spring type with the roller bearings. Its not a wobble as such more an vertical up and down and quite a lot could it still be the bearings?

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Re: Sleeve gear bushes replacement
« Reply #38 on: 19.04. 2012 13:28 »
Could be if the rollers are the wrong size or the bearing surfaces (ID of chainwheel or center adapter) are worn. Is the center adapter a good fit on the taper?
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Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #39 on: 19.04. 2012 16:33 »
The rollers are about twenty plus tears old so they may need replacing  *smiley4*. What I will do is strip it down and check for play in the bearing and shaft and hope its the clutch as it the far easlier to fix.

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Re: Sleeve gear bushes replacement
« Reply #40 on: 19.04. 2012 17:21 »
Andy, just a thought ,has you have changed the p/chain you didn't adjust it to  tight ? easy to do and I beleive that'll kill the bearings double quick although I hope its just the cluth rollers, best wishes BobH
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Re: Sleeve gear bushes replacement
« Reply #41 on: 19.04. 2012 18:10 »
Andy, just a thought ,has you have changed the p/chain you didn't adjust it to  tight ? easy to do and I beleive that'll kill the bearings double quick although I hope its just the cluth rollers, best wishes BobH

It can become too tight when the rear chain pulls the gearbox back.

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #42 on: 19.04. 2012 22:26 »
Nope both the primary and rear chains are the correct tension.

Offline BSA500

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Re: Sleeve gear bushes replacement
« Reply #43 on: 20.04. 2012 20:54 »
Shows how often I do this stripped down the primary side and back together in 1 hour 10 mins. This was clutch off and the inner primary. Conclusion the bushes are toast in under a month. Were they made from cream cheese??. Got them from Draganfly and as I have said before I seem to have problems with late delivery,wrong parts and missing items. I did drill in oil holes and the shaft was wobble free when I put it together. I shall have to do it again but I will try C&D Autos this time. Any other ideas/pointers/free beers *sad2*

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Re: Sleeve gear bushes replacement
« Reply #44 on: 20.04. 2012 21:29 »
I'm told it's easier to make wearing parts from free machining brass than from phosphor bronze, aluminium bronze or oilite, but it doesn't last well.