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brake callipers

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Randy Forbes, in the photo above your calipers are silver in color. I am in the process of rebuilding the calipers on my BJ7 and they are black. What is the correct, as in from the factory, color?

Thanks,
JPF
 
JP_Furble said:
Randy Forbes, in the photo above your calipers are silver in color. I am in the process of rebuilding the calipers on my BJ7 and they are black. What is the correct, as in from the factory, color?

Thanks,
JPF
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The factory replacement drums were supplied in black so maybe you have factory replacement calipers. Is the finish quite thick and difficult to remove?

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I hope that it's ok to revive this old thread.

I read Donny L's problems above with ruining seals while trying to install caliper brake cylinders. Then carefully reviewed the feed back and proceeded to rebuild my calipers. I did split them apart. The first two halfs went just fine. The second two did not. The cylinders would not go in. I ruined three seals before I noticed that the bottom of the cylinders were sharp, not rounded much at all. They were slicing my seals as I pushed them in. I was very very careful to square up the cylinder and work it in after ruining the first seal. In the end I took off a little material to create a bull nose edge on the new cylinders, which closely match the old ones. After that the cylinders pushed in nicely.

Also, the 3rd half (sounds strange, 3rd half)went together very hard. That was before I found the sharp edge on the cylinders. I took it back apart and it had damaged the seal. I wouldn't have known it. Thought that it went together so it was fine. I was wrong.

Dale
 
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A little trick to ease the pistons past the boots and into the caliper body is to direct compressed air into the caliper body to inflate the boot as you press the piston against the boot. Dial down the pressure so that it is just enough to inflate the boot and open it up enough to allow the piston to get by. It helps to have an assistant work the air gun.
I use an assembly lube product made by Wagner for brake cylinder assembly. Works better than brake fluid.
 
Donny

Just one more thing, just because a professional is doing the job, they can still make mistakes. When you install them, just give those brakes a darn good pumping and then check for leaks. I bought replacement calipers, put them on and bled them up then took the car for a spin, parked in the drive and watched a pool of fluid developing on the floor. Stripped them out and took them back to the vendor and he found that the seal was nipped in one of them, causing the leak, of course he sorted it out FOC and they are fine now.

:cheers:

Bob
 
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