Series 3 brake issue

//HS88// · Feb 6, 2021

Hello all

My SWB series 3 has got a 109 axle up front. I recently bled the brakes as the pedal went soft and now I have excellent pedal pressure and all is good there.

The only issue now is the front brakes are out of balance and the N/s front locks hard and the landy pulls almost to full lock under heavy braking. I have check the shoe clearance and they both spin freely. I tightened then to the point they wouldn’t move and backed off the same amount where they both span free. Any ideas? Just want some ideas so I know what to buy and not waste money!

thanks

Colthebrummie · Feb 6, 2021

I had this problem, when I took the drum off, the shoes on the o/s had worn unevenly. They weren't contacting the drum for their full width. One edge looked nearly new and the opposite edge was worn away.

Col

steve2286w · Feb 6, 2021

Also put some chamfers on the leading edges on shoes , stops them grabbing ,

sorted mine when pulling to the side

//HS88// · Feb 6, 2021

steve2286w said:
Also put some chamfers on the leading edges on shoes , stops them grabbing ,View attachment 230278 sorted mine when pulling to the side

Cool thanks! I will give that a go. It’s drivable but at low speed it’s a full on lock up and pulls hard! Cheers for the info

//HS88// · Feb 6, 2021

Colthebrummie said:
I had this problem, when I took the drum off, the shoes on the o/s had worn unevenly. They weren't contacting the drum for their full width. One edge looked nearly new and the opposite edge was worn away.

Col

Thanks for the info!

steve2286w · Feb 6, 2021

Can be scary when you’re not expecting it

boguing · Feb 6, 2021

It's about nine years since I last worked on the twin leading drums, but have you checked that you've got the springs all in correctly? And they are notoriously tricky to bleed so if one side's a bit soft the other might feel grabby.

rob1miles · Feb 7, 2021

Look at the outside edge, they can catch on the drum. File a chamfer

Blackburn · Feb 7, 2021

The 11" brakes have an adjustable bolt on the back plate that is to keep the shoe central should be just in contact with the shoe , they where fitted with a little end cap so shoe could slide over them but they tend to get lost left off. Special name for them but that escapes me at the moment.

kermit_rr · Feb 7, 2021

Worth double checking the other side, give it another bleed just in case and that they are both adjusted equally

Series 3 brake issue

//HS88//

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//HS88//

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//HS88//

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