Rate my brake ;)

[Solar]

Hey everyone

Ok next problem....So the van, 1967 PA wanderer, hasn’t moved in 5 years so i was expected things to be a bit creaky, however one rear wheel was making a grinding sound. First i tried the micram adjuster through the wheel as i thought pulling the brakes away from the drum would work, it helped a tiny bit but not much. I can spin the wheel by hand but it comes to a stop quickly whilst making that grinding noise. When i tightened the micram adjuster fully i could still move the wheel, but when i did this on the opposite rear side the wheel locked. I presume the wheel should lock when the micram adjuster is fully tightened?

On inspection the shoe lining has got deep lines on it and i think uneven wearing. How thick should the shoe lining be?
The inside of the drum seemed to look ok,
(The PA has one cylinder at the rear brakes, and two on the front.) If the cylinder is oily/messy is that a sign it has failed? If so can i repair or do i need to replace?
I also noticed that the shoe had a bit of moment, it felt like the springs were pulling the shoes outwards, not by much but there was movement. The opposite side was solid.

The second but less offending wheel was the front left. I opened that up and the two cylinders look quite oily. And the inside of the drum had a few raised rusty parts.

I’ve cleaned the drums with brake cleaner but haven’t touched the brake lining, i wasn’t sure if it was asbestos?

Any opinion greatly appreciated again!

 

[Panky]

It looks like something has got into the drum and gouged the shoe, it's a bit to coarse for the damage to be caused by a brake fluid and dust combination. It could have been rust braking away from the back plate, or the shoes themselves, getting trapped under the surface, either way they will need replacing. Personally I would do all four corners as it does look like you have a few leakers. It would be cheaper to replace the seals (if the cylinder bores are OK) but I've found they don't last. For now I think you will get away with just replacing the rear shoes but they are quite difficult to find, you might have a better chance of finding a company that will re-line them for you.
It's possible they contain asbestos but it was mostly removed from brake linings many years ago and since you've already washed the dust away just use sensible precautions like gloves and a mask if unsure