Rear Caliper Issues - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Rear Caliper Issues

TJ 5.25" Speaker Adapters - NalinMFGJEEP Gear Change Packages From ROCKRIDGE 4WD. We Are DIFFIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 08-22-2013, 06:41 PM   #1
brandon789
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2013
Location: Raleigh, NC
Posts: 26
Rear Caliper Issues

I recently bought a 1991 Wrangler with a ford dana 60 swapped in the rear. It has a disk brake conversion using 77 Cadillac eldorado rear calipers and pads/rotors from a early 80's Chevy k20. Both rear pads were worn and soon after I got it the passenger rear rotor started grooving. I went today to replace the pads and rotors but can't compress the caliper piston at all. I tried opening the bleeder valve but I'm still unable to compress the piston using a c-clamp. I also tried turning the piston but couldn't get either to turn. Am I going to have to replace the calipers or is there some way to get them to compress?

brandon789 is offline   Reply With Quote
Unread 08-22-2013, 07:12 PM   #2
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 4,932
http://www.studebaker-info.org/tech/...earCaliper.jpg

Is this your setup? Most likely the E brake system has the piston jacked out. Find a way to back it off.
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote
Unread 08-22-2013, 08:33 PM   #3
kloppk
Registered User
1992 YJ Wrangler 
 
Join Date: Oct 2006
Location: Massachusetts
Posts: 2,714

Agreed.
You need to loosen the e-brake adjuster. This will let the piston go in on those calipers.
Gotta have the bleeder open too.
__________________
Baystate Jeepers
Deep Woods Extreme
New England 4 Wheelers
kloppk is offline   Reply With Quote
Unread 08-22-2013, 10:46 PM   #4
brandon789
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2013
Location: Raleigh, NC
Posts: 26
My setup is similar but not exact, the ebrake cable is disconnected and i made sure it is pushed all the way to the off side, do I have to do more to disconnect it?
brandon789 is offline   Reply With Quote
Unread 08-22-2013, 10:47 PM   #5
brandon789
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2013
Location: Raleigh, NC
Posts: 26
Tomorrow I'll buy the autozone tool and see if that helps at all.
brandon789 is offline   Reply With Quote
Unread 08-22-2013, 11:01 PM   #6
jokerchief462
Wild Wheeler
 
jokerchief462's Avatar
1989 YJ Wrangler 
 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,848
I looked on the web and found absolutely nothing to help. Are the caliper pistons rusted or real crappy??? I k ow some calipers actually screw back in. Best I got good luck.

Take a caliper with you to the parts house never know who's behind the counter.
__________________
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

AF Jeep Club Tail #184
jokerchief462 is offline   Reply With Quote
Unread 08-23-2013, 12:05 AM   #7
brandon789
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2013
Location: Raleigh, NC
Posts: 26
Calipers look pretty good, no rust or anything just flaking paint. I'll try the tool, it rotates while pushing in and if that fails i'll have to take the calipers in and get replacements.
brandon789 is offline   Reply With Quote
Unread 08-23-2013, 11:42 AM   #8
XJ93
Registered User
1995 YJ Wrangler 
 
Join Date: Apr 2009
Location: Michigan
Posts: 762
If nothing is coming out at the bleeder screw, try loosening the banjo bolt slightly and see if that relieves pressure. If it does than your hose is to blame. I see it all the time at NAPA.
XJ93 is offline   Reply With Quote
Unread 08-23-2013, 03:30 PM   #9
brandon789
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2013
Location: Raleigh, NC
Posts: 26
Alright so I got the autozone tool and it didn't help but then I decided to pull off the caliper and drain the fluid. I still couldn't compress the piston so I pulled off the ebrake lever on teh back and undid the ebrake part and suddenly it was easy to compress all the way. I also noticed even when it was stuck out i could pull the ebrake lever and the piston would come out more but not return. Is this a fault of hte ebrake part of the caliper? It seems like somehow it is pushing the piston out but not allowing it to return. It would also explain why the brakes wore out so quickly. Any ideas on if this is the issue or how to fix it?
brandon789 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.