BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: Rocketdemon on 09 Sep, 2022, 13:26

Title: 1971 OIF B25 SS external oil filter order of assembly
Post by: Rocketdemon on 09 Sep, 2022, 13:26
Hi All

As anyone got a diagram of the original external oil filter showing position of washers, spring and seals?

Cheers

Pete
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Spaceman on 09 Sep, 2022, 13:53
There is a diagram in RR Vol. 2 but I can't reproduce it here for copyright reasons.

The diagram shows that on the inlet pipe that pokes down into the centre of the filter there is an O-ring at the top followed by a large washer followed by a circlip.

The diagram then shows there to be an O-ring between the retaining bolt head and the bottom of the filter bowl. Inside the filter bowl at the bottom is the spring followed by a smaller washer, an O-ring, a large washer and then the circlip uppermost.

Hope this helps.
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Rocketdemon on 13 Sep, 2022, 10:29

Thanks Spaceman, this is how mine is assembled, does it look right?

Cheers

Pete
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Rocketdemon on 13 Sep, 2022, 10:53

My Bike!
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Spaceman on 13 Sep, 2022, 12:07
The attached shows the correct configuration of the components:
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Rocketdemon on 13 Sep, 2022, 12:36

Thanks Spaceman, is the spring in the diagram conical shaped? ie larger at the top than the bottom, as mine is?

Pete
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Spaceman on 13 Sep, 2022, 14:17
I seem to remember it was conical on my B25 but diagram is not that clear although it looks as though wider end is probably at the bottom - that bearing against the bottom of the filter bowl?
Title: Re: 1971 OIF B25 SS external oil filter order of assembly
Post by: Rocketdemon on 02 Oct, 2022, 13:11
Okie Dokie, thanks for all the help, oil changed and new filter fitted, all working well.

Pete