Author Topic: Gearbox Removal?  (Read 2216 times)

Offline brackenfel

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  • Adrian - Bristol UK
Gearbox Removal?
« on: 20.03. 2010 14:29 »
Dear All,
Back from a few days away, the garage has warmed up a bit & I've had another go at the A10 (1961).. At this stage I was hoping to be on the re-assembly side of things. Things went well to start with, a few jobs ticked off the list...

However.....

I thought I'd just drain the gearbox oil to check what state PO had left it in (& whether it was full of grease like everywhere else..!) Gawd knows what length of bar he used to do the drain plug up with but it won't budge (not exactly pristine either, nicely rounded...) Either that or Hematite  / thread lock has been used!
As I'm not happy with gearchange I thought I might try & remove it & dismantle it on the bench rather than in situ..

Question: can you ge the thing out without removing the motor or half the rest of the bike??

Thanks as always..

Adrian
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1961 A10 650 Golden Flash - Blue
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Online bsa-bill

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Re: Gearbox Removal?
« Reply #1 on: 20.03. 2010 14:44 »
I think it's a No Adrian, probably could be done if you remove the rear engine plate on the timing side, to do that maybe the Magneto would have to come off too.
As always others may have found a way and will comment

All the best - Bill
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All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline alanp

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Re: Gearbox Removal?
« Reply #2 on: 20.03. 2010 15:13 »
I've just checked the photo records of my strip and found that I took the gearbox out by removing the upper halves of the gearbox plates on the timing side and drive side, without disturbing the lower gearbox plates, engine plates or magneto.  Of course the clutch was off as well, but maybe not the inner primary, although mine was off at the time. Hope this helps.
Alan
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Offline brackenfel

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Re: Gearbox Removal?
« Reply #3 on: 20.03. 2010 21:38 »
Thanks Bill & Alan,
The primary side is already off to sort the clutch and various leaks out so I'll have a go at getting the 'box out as well.. What started as a tidy up has now developed into a full-scale strip down!!..
Still, I did that 15 years ago with my Velo and that has stood me well - it's very badly in need of attention now though as I've ridden the wheels off it which is why I need to get the A10 sorted!
Hopefully I'll get the 'box out without removing the mag, I really don't want to go down the route of starting on the engine area..

Thanks again,

Adrian
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1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...

Offline brackenfel

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Re: Gearbox Removal?
« Reply #4 on: 23.03. 2010 20:07 »
Alan,
have made a start loosening the upper g/box plate bolts but am not convinced that they're going to come out without removing other things (like the mag) which I don't want to do..

Could you check your log to see that you did get the box out easily? I don't disbelieve you but it doesn't look easy & I don't want to end up with it half out and not be able to ge  it back again!!

Has anyone else done this please?

Thanks,

Adrian
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1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...

Offline Jim

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Re: Gearbox Removal?
« Reply #5 on: 24.03. 2010 17:41 »
Hi Adrian,

I've recently removed the gearbox without to much problem, didn't have to remove engine or mag. From memory I removed the top two gearbox plates and the through bolt underneath and out she came.

If the photo attched itself, don't worry about the missing barrel and head theses were removed for a different reason.

Jim
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Offline brackenfel

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Re: Gearbox Removal?
« Reply #6 on: 24.03. 2010 19:20 »
Hi Jim,
That's brilliant, many thanks... I've already got the oil pipes & tank out as I wanted to flush the sludge out of the bottom of the latter.. I guess I just needed a bit more courage!! Back in the garage after work tomorrow!

Thanks again,

Adrian

PS I see you're a fellow Buell owner, I'll bet the '12 goes..!!
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1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...