Gearbox issues

Well, after my rebuild was going so well for a while now, this was bound to happen at some point, wasn't it?
Yes, problems have finally appeared. I can't select 3rd or 4th gear without the use of a hammer. 1st and 2nd works fine, a really nice shift. But 3rd and 4th isn't happening. I took the selector housing back off to find that there was about .3cm of free travel on the 3rd/4th synchro hub, is this normal?

Have you had the box to bits? Reason I ask synchro hub only goes in one way.
Would think there is some play on synchro hub as the brass outer does not want to be driven by 4th side when selecting 3rd gear and vis versa

Blackburn said:

Have you had the box to bits? Reason I ask synchro hub only goes in one way.
Would think there is some play on synchro hub as the brass outer does not want to be driven by 4th side when selecting 3rd gear and vis versa

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Yea, it's been in pieces.... is there any way to tell which way goes in which?

ProcrastinatorFraser said:

Yea, it's been in pieces.... is there any way to tell which way goes in which?

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synchro hub does have some travel , if you look into the splines one end of hub has a splines to the end which goes to the input shaft ,the other a recess which is needed to go over the snap ring which secures 3rd gear

I done did it. Yep, got the synchro round the correct way now, but why i couldn't select 3rd or 4th was a different issue: I thought the copper thingy that went all the way around the selector casing was a gasket: but no, it is in fact some form of spacer to stop the selector shafts binding on either sides of the casing. Does anyone know where i can find me another copper thingy?

ProcrastinatorFraser said:

I done did it. Yep, got the synchro round the correct way now, but why i couldn't select 3rd or 4th was a different issue: I thought the copper thingy that went all the way around the selector casing was a gasket: but no, it is in fact some form of spacer to stop the selector shafts binding on either sides of the casing. Does anyone know where i can find me another copper thingy?

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not sure what you mean ,any more details

What series box is it never seen anything between selector top and gearbox they are machined as a pair and should have corresponding numbers stamped on edge by front on casing and selector top..

Blackburn said:

What series box is it never seen anything between selector top and gearbox they are machined as a pair and should have corresponding numbers stamped on edge by front on casing and selector top..

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Well i got me a mismatched pair then, when i took the selector top off, there was a copper spacer in between the 2 pieces, if it wasn't there, the selector shafts would bind between the 2 casings

on the rear of both the box plus top are markings showing they are a matched set without it will never be quite right

jamesmartin said:

on the rear of both the box plus top are markings showing they are a matched set without it will never be quite right

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I will check them...

well i got f6-5 stamped on the selector casing but nowt on the gearbox

ProcrastinatorFraser said:

well i got f6-5 stamped on the selector casing but nowt on the gearbox

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marks should be stamped close to each other, if they arent the same it is a different top, you might be able to salvage something but if 3rd 4th selector maching is far out it would take some effort

jamesmartin said:

marks should be stamped close to each other, if they arent the same it is a different top, you might be able to salvage something but if 3rd 4th selector maching is far out it would take some effort

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Well, bollocks.
I may have to improvise the way it was before..

LOL why is it I only find out they a machined as a pair a week after I buy one to replace a slightly battered one on mine.

LordOWar said:

LOL why is it I only find out they a machined as a pair a week after I buy one to replace a slightly battered one on mine.

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Cos that's how life works with a tratter