BSA Owners' Club Forum

The BSA Workshop => Singles => Topic started by: BeenyBoy on 06 November, 2017, 12:30:09

Title: gear selector problem
Post by: BeenyBoy on 06 November, 2017, 12:30:09
B31; 1955; M series type gearbox

Help !... this is doing my crust in !!!  I've assembled the gear selector unit as per the service sheet but once the springs are on they pull the pawls away from the ratchet plate. When I put the unit into the box I have to lever the top pawl carrier past the stops on the gearbox
I cant see there is another way of putting it together...believe me I've tried !... so what am I missing ????
Title: Re: gear selector problem
Post by: BeenyBoy on 06 November, 2017, 17:31:41
sorry....continued... so when the selector is in position the pawls are not in the ratchet slots
Title: Re: gear selector problem
Post by: BeenyBoy on 08 November, 2017, 16:04:50
Do these make it clearer ?
Title: Re: gear selector problem
Post by: BeenyBoy on 08 November, 2017, 16:06:42
pix
Title: Re: gear selector problem
Post by: BeenyBoy on 13 November, 2017, 17:45:35
come on guys...I'm struggling here !
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 13 November, 2017, 20:28:17
you may have seen this already but it may help  ;)

https://www.bsa-oc.com/wp-content/uploads/bsk-pdf-manager/96_SECTIONM_BSASERVICESHEETNO608.PDF

i would paste it in but i am not as clever as julians!

regards

derek
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 13 November, 2017, 20:31:15
fail!
Title: Re: gear selector problem
Post by: BeenyBoy on 14 November, 2017, 13:24:03
Hi

Thanks but I've seen that and as far as I'm aware I've put it together as per the instructions.. but once place in the box the pawls are nowhere near the ratchet...so where am I going wrong ?

 
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 14 November, 2017, 15:04:58
i have never worked on that type before so excuse my ignorance when i ask this, what happens when you put gear lever in place and try and select a gear?
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 14 November, 2017, 15:05:58
sorry....continued... so when the selector is in position the pawls are not in the ratchet slots

do they not engage when shaft is turned by gear lever?
Title: Re: gear selector problem
Post by: DEAN SOUTHALL on 14 November, 2017, 17:28:31
Sorry I can't help directly but I'd put money on you getting an answer from one of the many experts on the BSA WM20 forum. You don't have to sign up or join to post on there and I have found them very helpful as I blunder my way through an M20 rebuild.

http://pub37.bravenet.com/forum/static/show.php?usernum=3155626639&frmid=0&msgid=0

good luck!
Title: Re: gear selector problem
Post by: BeenyBoy on 14 November, 2017, 17:30:33
Hi

Operating the gear change lever allows the pawl to engage on one side with the ratchet but it wont move either up or down a "slot"  there doesnt appear to be enough free movement
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 14 November, 2017, 18:11:24
sorry cant be of more help, maybe a fresh pair of eyes can see something.

Sometimes when you are looking for a problem it needs somebody else to have a look, is nobody local to you on forum, i am in Glasgow so doubt if i am close!   :-[
Title: Re: gear selector problem
Post by: BeenyBoy on 15 November, 2017, 17:31:53
Ok thanks guys,,, now sorted. I'm not sure what I've done differently but put it together for the "n"th time and it seems to work, I suspect I hadnt seated the unit properly in the casing...but anyoo...thanks for your help

cheers

Mike :)
Title: Re: gear selector problem
Post by: DEREKANDERSON8 on 15 November, 2017, 17:50:39
excellent news well done!  ;D