14 bolt disc issues (cap in center of Eldo calipers????)

[74kay5]

I did a disc swap on my 14 Bolt FF about 3 months ago and it seemed to be working out fine for a while. The new rotors and pads were beginning to seat and wear in fine with no noise. I got an adjustable proportioning valve and got it set up to work the way I wanted. Then at one point I took a peek under the truck and there was fluid spattered over both of the tires. At first I thought it was gear oil from leaking hub seals but I took off one caliper and it's definatly comming out of it. I used the El Dorado calipers from a bone yard and they were full of fluid when pulled. The fluid isn't gushing out on the ground but when I press on the yellow rubber center of the piston it starts leaking out. OK so I need new calipers or a rebuild kit for them. Now for the second issue. While placing the caliper aside I nudged the rotor and hub assembly and then noticed I was able to move it back and forth. The hub nut must have came loose or was never tight enough. The nut torqued to spec didn't do the trick so is there a better way of getting it tight enough?
Also can someone tell me why there would be a cap in the middle of a brake piston?

 

[neverendingproject]

There is a cup that goes inside the piston and the seal for it must be bad. They sell rebuild kits or just seal kits for those calipers.

 

[74kay5]

There is a cup that goes inside the piston and the seal for it must be bad. They sell rebuild kits or just seal kits for those calipers.

I know they have the seal that goes around the piston but I haven't been able to find parts for the actual piston.

http://coloradok5.com/forums/<a href=

 

[neverendingproject]

Flip the piston over and youll see a mechanism that is the ratchet for the e-brake. Take a little screwdriver to get the cage off, be careful cause theres a spring in there, then take all the guts out and youll see what i mean. The seal thats bad is inside the piston.

Edit: go on partsamerica.com and youll find the seal/rebuild kit.

 

[74kay5]

Flip the piston over and youll see a mechanism that is the ratchet for the e-brake. Take a little screwdriver to get the cage off, be careful cause theres a spring in there, then take all the guts out and youll see what i mean. The seal thats bad is inside the piston.

Edit: go on partsamerica.com and youll find the seal/rebuild kit.

Cool, that's the answer I was looking for, thanks

 

[74kay5]

OK, I got the seal kit from napa and it's got everything in it to rebuild the caliper minus the piston which looks salvagable. Now I just need to figure out where all these seals go. I would just look at the old caliper and how I dissasembled it but the problem is that the seals must have been so far gone that they are pretty much non-existant!!! Anyone know of a "how to page" for rebuilding cadillac calipers with pictures? Tons of disc swaps GM Ford and Dodge use these calipers, so there's got to be someone who's done it. I searched for 3 hours yesterday and couldn't come up with anything.

 

[neverendingproject]

Just put the seals on that fit. They are different sizes. Just look at it and it will come together easier than you think.

 

[mechted]

http://classicbroncos.com/reardiscs.shtml

ahhh... search is a wonderful thing... I spend 10 mins trying to find this article with Google, and 45 seconds trying to find it with the internal CK5 search function.

found it here: http://coloradok5.com/forums/showthread.php?t=135266&highlight=caliper+rebuild

 

[74kay5]

http://classicbroncos.com/reardiscs.shtml

ahhh... search is a wonderful thing... I spend 10 mins trying to find this article with Google, and 45 seconds trying to find it with the internal CK5 search function.

found it here: http://coloradok5.com/forums/showthread.php?t=135266&highlight=caliper+rebuild

Thanks that's what I needed, what words did you put in for the search? If I can find what I need in 45 seconds instead of 3 hours life will be good from now on. Your Kung Fu is the best.

 

[mechted]

I think i used "caliper rebuild" and searched in the garage forum... but you have to be a member to have the search function.... so $25, well worth the knowledge, access to increased forums, and parts discounts IMO.