The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: GeoffsA10 on 06.05. 2013 10:18

Title: Plunger A10 gearbox filling
Post by: GeoffsA10 on 06.05. 2013 10:18

Hi All,

I have not had my beloved Golden Flash long but just wondering how to check and fill the oil level in the gearbox...maybe a daft question I know but cannot see anything in the manual ?
There is a projecting bolt on the back of the gearbox presumably this is the level plug but tricky to use it to fill through - or is that the only place to fill too?

Any help much appreciated.

Thanks

Geoff

Title: Re: Plunger A10 gearbox filling
Post by: bsa-bill on 06.05. 2013 11:42

Think that is the level plug Geoff

I only have S/A bikes but presume the Plunger g/box is similar

The stud you see in the pic is the level plug, fill through the oval plate on the outer cover (held by two screws) until oil comes out of the level plug, bike on Centre stand

Title: Re: Plunger A10 gearbox filling
Post by: bikerboy on 06.05. 2013 21:51

Geoff

Bill is spot on the plunger is exactly the same to fill as the swinging arm model

Title: Re: Plunger A10 gearbox filling
Post by: Brian on 07.05. 2013 01:30

Geoff when you tip the oil into the gearbox tip it in very slowly. The oil has to flow into the main section of the gearbox and if you tip it in too quickly it will flow out the level plug before it has gone into the main part and you will get a false level.

Title: Re: Plunger A10 gearbox filling
Post by: GeoffsA10 on 07.05. 2013 08:04

Hey you guys thanks for those tips - you are all spot on. I drained the gearbox and it was a bit silvery with metal filings so I am glad I did it. I also found that the gearbox only takes about 2/3 of a pint not 1 pint as the manual indicates .

Brian Your A10 looks a lovely machine - single saddle and chrome tank same as mine !

Thanks again.

Geoff

Title: Re: Plunger A10 gearbox filling
Post by: Brian on 07.05. 2013 08:45

The bike in the pic is a 1950 A7 Star Twin Geoff, one of the longstroke twin carby jobs. I've added a better pic of it.

I've got a plunger A10 as well though.

Title: Re: Plunger A10 gearbox filling
Post by: GeoffsA10 on 07.05. 2013 08:54

Thats a real beauty . Those Twin Stars are meant to be pretty nippy  presumably that has an iron head too. Mine is a 1952 model which I only bought last year but just love it - especially the magical exhaust note - sounds much better than your average Triumph. Will dig out a pic of mine shortly and post it.

Title: Re: Plunger A10 gearbox filling
Post by: Greybeard on 07.05. 2013 21:52

Quote from: Brian on 07.05. 2013 08:45

The bike in the pic is a 1950 A7 Star Twin Geoff, one of the longstroke twin carby jobs. I've added a better pic of it.

I've got a plunger A10 as well though.

Beautiful bike!