The BSA A7-A10 Forum

Technical => A7 & A10 Engine => Topic started by: Old git on 20.12. 2010 12:06

Title: One or Two Gaskets
Post by: Old git on 20.12. 2010 12:06

My basket case A10SR is coming on slowly,but I have come aganst a small prob, whil'st prepairing to fit the back half primary case to crank case one of my spares lists states 2, 43-7509 round gaskets another list says 1, which is correct and in what order are they fitted.

Pete

Title: Re: One or Two Gaskets
Post by: A10Boy on 20.12. 2010 12:15

Hi Old Git

There are two round paper gaskets with a round steel plate in between.

Regards

Title: Re: One or Two Gaskets
Post by: MG on 20.12. 2010 12:16

Hello Pete!

parts list before 1960 have 1 gasket listed, later ones state 2 off. Dunno why  *dunno*
I have however fitted 2 on my bikes without any subsequent problems, in the following order: crankcase-gasket-spacer ring-gasket-inner primary cover.

HTH, Markus

Title: Re: One or Two Gaskets
Post by: brackenfel on 20.12. 2010 16:09

Hi Pete,
As others have said, use two, one either side of the metal spacer. I've used Wellseal on all surfaces, just to try & keep things oil-tight. My A10 is 1962...
Hope this helps..

Adrian

Title: Re: One or Two Gaskets
Post by: Old git on 20.12. 2010 19:31

Thanks for all your replys much appreciated,now i've a few choices

Pete