Had to replace my rear brake assemblies due to a leaking near side brake cylinder. Back plates Brake cylinders Brake shoes Star adjusters Outside rear wheel bearing seal All came apart easily enough and reassembled both rears no trouble at all (even the hub nuts! Lol) Or that was until I took it for a test drive and heard a grinding noise coming from the rear brakes. Put it back on the ramp, backed off the star adjusters and hand brake cables, but the grinding noise was still there and only from the near side wheel. So I took the n/s wheel off and the brake drum. Turns out the brake drum (which i have not renewed) is rubbing against the new back plate. Question is: do I complain to Machine 7 and get a new back plate sent out? Or go to my local engineering firm and get 1mm taken off the edge of the brake drum? Should be noted that the offside back plate that was also replaced but had a OEM sticker on it, where the near side, which is the one causing the issue, I think is a pattern part and not OEM.
If you paid for best quality complain, if not still complain but expect to receive more junk as a replacement !
I had this a few years ago with new drums and genuine back plates from creative engineering ..spoke to them and they had never heard of problem ...back plate was flat .....easiest way was to machine the drum groove as it will eventually rust and rub so I removed 3mm
Use a lever and some patience. There is no need to remove anything, it can be bent. You will only get another one the same if you send it back. Treat spares as a sort of user-finishable kit rather than drop in replacements. It is usually only just touching and it now will have a nice wear mark where it needs to have the spacing increased. Remember that if you bend it away at that point, the plate will bend forward to rub the drum at + and -90 degrees from where you bend it, because it has a stiffened edge. It is just a bit of a pain.
You may be out of luck. I'd avoid trying to bend the backplates - it won't end well. Mine scraped a bit, but I kept driving...they wore themselves down slightly eventually. May be that your drums are slightly distorted.
I shaved the brake drum with an angle grinder, takes minutes and fixes the issue.....the drum is even grooved so you can be pretty uniform.
It was the advice I was given on here....it took minutes and has caused zero issue since and no uncomfortable chaffing....
I should have done the same . I reckon the drums warp slightly, but wear the original backplates down over the years. Only when you put new plates on do you notice it.
The drums grow due to corrosion and your genuine set up that has never previously rubbed will eventually ...I'd rather machine a bit out of the groove at the rear of the drum than end up with a thruppenny bit back plate ....
It's definitely the back plate. The bits that are rubbing are pressed with strengtheners spot welded to the back. The drum is in good nick, checked with a DTI, and runout is pretty good Have to say bleeding the brakes is a breeze with this. Sucks the fluid / air out rather than pressurising the system. Didn't want to burst the pipe between the upper reservoir and the lower reservoir. It's looking a little frail.
Not sure if its your rubbish photography or my rubbish eyes but that looks enormous How big is it ? I`m guessing you did that so we old folk could see it. It looks the size of a wheelie bin in this piccy. Is it powered ? Or pumped by hand or pressurised ? Looks like an improvement on my gunson and dragging a spare around the bus Ozziedog,,,,,,,,,,,,,,,,,Machine Mart ???
Lol It stands about 12" tall. It's quite a size considering how much brake fluid is actually in any one system. (Although it can be used to suck out engine / gearbox oil as well). It runs off compressed air to create a vacuum.
Brill yunt,so does it need a pipe to my compressor while its in use Or do I just pressurise it then use it . Ozziedog,,,,,,,,,,,,It really looks much much bigger
Needs to be plugged into an airline. I'm sure I've seen one model that has a hand pump, if you don't have access to an air compressor or airline.
Iv`e got a fairly good compressor and airlines, I sound like Richard Branson with the airlines ozziedog,,,,,,,,,,,,,,, ill end up with one of those next time I`m down there
