Installing Kelsey Hayes Caliper Pistons ?
I do a lot with those four piston Kelsey Hayes disc brake calipers, so i will give you my 2 cents worth on the subject.
I read that you wrote "new" pistons.
How many? All 8 of them, or just a couple that needed replacing?
Were these calipers sitting around unused, for years, or were they in service needing a rebuild, when doing a brake job?
Did you scrape out all the crud, rust, that may have accumulated in the seal groove, in the bore, before you put in the new seal?
How about honing, sanding, the bore itself, before installing the new pistons?
When i rebuild these calipers, they have been sitting unused, for years and years, before i get them as cores to rebuild.
I use a Dremel, and a "flap wheel" to clean up the bores in the caliper.
You do any clean up of the bores, to remove any old crap that accumulates?
New pistons can sometimes be "tight" going in, but if they are lubed up properly, with slippery, assembly lube, i never have seemed to have any trouble.
I use a product since the 1980's called McKay Assembly Lube, but it is very hard to find, and purchase in this day and age.
Just hope that you don't pinch the seal in the bore when installing the new pistons.
Well, my two cents.
Good luck with the rest of them.
Jim V.
hemi71x
I do a lot with those four piston Kelsey Hayes disc brake calipers, so i will give you my 2 cents worth on the subject.
I read that you wrote "new" pistons.
How many? All 8 of them, or just a couple that needed replacing?
Were these calipers sitting around unused, for years, or were they in service needing a rebuild, when doing a brake job?
Did you scrape out all the crud, rust, that may have accumulated in the seal groove, in the bore, before you put in the new seal?
How about honing, sanding, the bore itself, before installing the new pistons?
When i rebuild these calipers, they have been sitting unused, for years and years, before i get them as cores to rebuild.
I use a Dremel, and a "flap wheel" to clean up the bores in the caliper.
You do any clean up of the bores, to remove any old crap that accumulates?
New pistons can sometimes be "tight" going in, but if they are lubed up properly, with slippery, assembly lube, i never have seemed to have any trouble.
I use a product since the 1980's called McKay Assembly Lube, but it is very hard to find, and purchase in this day and age.
Just hope that you don't pinch the seal in the bore when installing the new pistons.
Well, my two cents.
Good luck with the rest of them.
Jim V.
hemi71x
