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Jesse
Joined: February 27th, 2014, 3:19 pm Posts: 16 Location: Strathpeffer, the Highlands, Scotland
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Input shaft question
Hi all, With a bit of help from Martins thread ( viewtopic.php?f=7&t=5519) I am in the process of rebuilding a couple of gearboxes. Bearing replacement is no issue but my problem is that the input shaft oil scrolls are worn. It seems that most are... Both boxes had a lot of dirt/oil around the bellhousing which would suggest the scrolls are not doing what they are supposed to do - keep the oil inside the box. My question is - can I remove the internal bush pictured below (just the first shorter one) and replace this with an oil seal? Has anyone done this? I just wondered if the bush would come out easy enough? I guess I would have to block off the small oil return tube also? I haven't done any measuring to determine what size of seal as yet so am not sure if I can even get one to fit. Or should I source another input shaft? Any help/thoughts appreciated. Regards, Jesse Edit - after looking at it again I have just realized that a seal of that outer diameter wouldn't slide over the splines on the input shaft...
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August 11th, 2015, 5:15 pm |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm Posts: 3684 Location: Ecosse
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Re: Input shaft question
and the scroll will rip the lip....id tried various o rings on the concentric ( rather than spiral) bit but as this coincided with the gap between the bushings the size of the o ring needed meant that the shaft wouldnt push through. STP or one of the tuners welds up the shaft machines it to take an oil seal but....bit of a faff
Ken has a nice little trick but it needs carefull set up, dunno if he can do it for DIY fitting?
BTW they dont look tooooo bad, new pilot bush at the same time?
_________________ Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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August 11th, 2015, 8:02 pm |
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AZS
Firing on two.
Joined: December 22nd, 2013, 5:01 am Posts: 300 Location: Netherlands
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Re: Input shaft question
STP doesn't weld anything in this world anymore, although the site is still up.
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August 11th, 2015, 8:31 pm |
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AZS
Firing on two.
Joined: December 22nd, 2013, 5:01 am Posts: 300 Location: Netherlands
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Re: Input shaft question
Ken would be your best bet, i'm very interested in his solution as well. https://www.flickr.com/photos/30132857@N06/9855124914/
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August 11th, 2015, 8:41 pm |
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Jesse
Joined: February 27th, 2014, 3:19 pm Posts: 16 Location: Strathpeffer, the Highlands, Scotland
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Re: Input shaft question
Thanks Sean. It looks like there is no easy solution. Yeah I have fitted a new pilot bush to the rebuilt engine so that should help things anyway. I will probably source another input shaft though.
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August 19th, 2015, 7:33 pm |
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2CViking
viking bastard
Joined: April 18th, 2009, 11:43 am Posts: 2424 Location: Meneac, Bretagne France
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Re: Input shaft question
AZS wrote: STP doesn't weld anything in this world anymore, although the site is still up. Why not
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August 19th, 2015, 9:10 pm |
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subarupete
Firing on two.
Joined: March 5th, 2009, 6:23 pm Posts: 2186 Location: Near Monmouth
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Re: Input shaft question
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August 20th, 2015, 1:34 pm |
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