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Rear drums - what's gone wrong

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Hi, never had this issue before when doing drums on the Fabia. Put new cylinders, pre assembled shoe kit and drums on but one side has rubbed so much it was literally smoking. It's fairly obvious that my hard work has been wasted and I'll need to do this side again (or scrap the car). But just trying to work out why the inside edge seems to have rubbed to badly. The other axle is absolutely fine. Everything was going so well too 🤦🏽‍♂️

I've attached before (shiny new gear) and after photos (shiny new gear 30 mins later).

The cylinder pistons were equally pushed out when the job was finished, not unequal like when I took the photo.

Screenshot_20241111_163757_Photos.jpg

Screenshot_20241111_163837_Photos.jpg

Your assembly looks absolutely spot on 👌

 

I think all it's going to be is the corrosion on the back plate where the shoes sit against it. You can try giving them a good wire brushing and put some copper grease on mating surfaces, but ideally, I think it's probably ready for a back plate. They do bolt on, but the bolts are likely to be rusted to death, so you'll probably need to take the hub off to do it. 

 

The good news is, if you're taking the hub off, there's no need to disassemble the shoes. 

  • Author

Thanks for the reply. I'll give replacing the back plate a go, wish I'd just done that today now. Think they have them in euros for £40ish a side. I guess the cylinder will need replacing again as it's probably had boiling hot brake fluid in it, might see if the back plate resolves the issues before deciding whether to replace the brand new shoes again. 

Can't help @roguegoblin but could I ask where you bought your pre-assembled kit from, as I want to buy the same for my Mk2. I've seen a TRW one on Mister Auto and Carparts4less have a Pagid with £10 off when you spend £50+. It appears to be the same kit as for the Mk1.

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There are 3 little plastic 'buttons' that push fit through the backplate under each shoe, to provide a low-friction contact. These tend to be near invisible unless you're looking for them, but you may well see the retaining clips of each poking out the back of the backplate.

They start life white/cream coloured, as seen if you look here. Scroll through the images to see them installed. 6N0609589, 6 per backplate.

They get carved up over time.

https://allegro.pl/oferta/suwak-szczek-hamulcowych-komplet-12-szt-oryginal-12710229048?dd_referrer=https%3A%2F%2Fwww.google.com%2F

 

  • Author
4 minutes ago, phs12 said:

Can't help @roguegoblin but could I ask where you bought your pre-assembled kit from, as I want to buy the same for my Mk2. I've seen a TRW one on Mister Auto and Carparts4less have a Pagid with £10 off when you spend £50+. It appears to be the same kit as for the Mk1.

I got the pagid one from carparts4less. Comes with everything except the guide pad plastic button things. 

Found it quite easy to do really, well other than the final result being wrong that is.... 

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7 minutes ago, Breezy_Pete said:

There are 3 little plastic 'buttons' that push fit through the backplate under each shoe, to provide a low-friction contact. These tend to be near invisible unless you're looking for them, but you may well see the retaining clips of each poking out the back of the backplate.

They start life white/cream coloured, as seen if you look here. Scroll through the images to see them installed. 6N0609589, 6 per backplate.

They get carved up over time.

https://allegro.pl/oferta/suwak-szczek-hamulcowych-komplet-12-szt-oryginal-12710229048?dd_referrer=https%3A%2F%2Fwww.google.com%2F

 

Thanks 👍 is that the part number for the button things? 

I'll get a back plate and buttons ordered and have another bash later in the week. Fortunately i have use of another car to get to work. 

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Yep 6N0609589 , you shouldn't really need to change the backplate, unless the holes have rotted out.

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I'll order it anyway and see if it's needed or not. 

Do you reckon I need another pair of shoes now? It's really made a mess, took ages for it to all cool down. Doesn't look like it now but that's a brand new cylinder too

Screenshot_20241111_195342_Photos.jpg

Edited by roguegoblin

5 minutes ago, Breezy_Pete said:

Yep 6N0609589 , you shouldn't really need to change the backplate, unless the holes have rotted out.

I've seen on videos a small amount of grease being applied to those gliders but wonder if that could be counter-productive as it might attract brake shoe dust and an anti-slide effect?

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The workshop manual suggests applying grease. 

Doubt it does much harm, but in many cases these bits of plastic are probably 20 + years old, so may have worn to nearly nothing.

1 minute ago, Breezy_Pete said:

The workshop manual suggests applying grease. 

Doubt it does much harm, but in many cases these bits of plastic are probably 20 + years old, so may have worn to nearly nothing.

Must be ok then.

I'm thinking I might get the TRW GSK1512 kit from Autodoc as they have the gliders in (cheap) as well. They seem hard to find in the UK and if I have to order separately from a dealer, I'd have to drive or pay an additional postage charge. I've emailed a local motor factor to ask if they can source the TRW kit but doubt they'll be price competitive even if they can (even with Autodoc's £8+ delivery charge).

Edited by phs12

Local VW dealer quoted me £1.01 each for 6N0 609 589 glide pieces (£12.12 for a set). Seems a bit steep. 

 

Autodoc not so cheap for the TRW kit at £85.80. Mister Auto was £77. My local Motor factor quoted £93.75 which would be slightly cheaper than Autodoc when their £8+ carriage is added.

Edited by phs12
Spelling

1 hour ago, phs12 said:

£12.12 for a set

Similar prices on ebay unless ordering from Latvia with spurious delivery dates.

Local garage (does my MOT's) sourced them from TPS for me. They're 84p + VAT = £12.10. VW dealer expected me to drive down to pay and go back again to collect when in stock; got the impression they weren't too keen to help out.

 

They're surprisingly small;

image.thumb.jpeg.5689843ff625d1829b4aecce506065cd.jpeg

  • 4 weeks later...
  • Author

Delayed update for this in case anyone's interested. 

 

I bought the back plates from Euros, they come with the little plastic button things installed already. Got on the driveway in the cold and took everything off again only to find out that the bolt holes didn't line up at all. Took them back to Euros only to be told after a good 20 mins of the guy clicking away on his computer, that despite the website saying  they were correct, they were in fact backplates for a Octavia 🙄.

 

Euros can't get hold of the back plates and nor could 2 other local motor factors. Skoda parts department wanted £130 a side for them however they have no UK stock.  Be advised that the majority of the ones that came up on AutoDoc etc appear the same as the ones Euros gave me and therefore won't fit. The only correct looking ones I found were from websites delivering from Poland and Germany so just double check if you are buying some. 

 

I got hold of some more plastic button things and decided to refurb the existing back plates as best I could. Anyway it all seems to be working correctly now , brakes feel good and handbrake is sooooo much better. 

 

Thanks for all the help 😁

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