Disc brake pistons

[moke2b]

Ok Maddog or Terry, this will i'm sure be an easy answer.  I am following the rebuild of the calipers that Maddog has kindly illustrated on the mokeworx page.  My question is in one of the pics there is a piston that has a higher edge on one side to the other. My calipers have four of these pistons.  I don't believe they are oem? Is there any particular way they are to go in to the caliper?

[Maddog]

Hi m2b,

The ones with the cut away section in my photo are the original chrome pistons. It is to help stop brake squeal and make the pads wear evenly by reducing piston pressure on the leading edge of the pad. The new stainless ones don't have it anymore, and use a shim with cut outs instead. Not sure about the new chrome pistons.

When you put them back, try to get the cut out part of the piston at the top of the caliper as it will be when bolted on - the easiest way to work it out is to point the cut out at the bleed screw on the inner caliper half or the fluid hole at the top of the outer half.

Mind you, all the ones I've pulled apart were all over the place! Then again, they didn't work that well either........

Hope this helps.


Cheers, MD.

[Terry]

Hi,

This is the article being referred to here, but I must admit  I can't see which piston is being discussed.

http://www.moke.com.au/modifications-and-repairs/471-caliper-overhaul

Terry

PS. Nice article MD

[Maddog]

I can't see which piston is being discussed

The one on the left Terry (bit hard to see though).

MD.

[moke2b]

Yep, nail on the head and all that! you guys r awesome cheers!