XJ brakes don't release after WJ parts upgrade
08-28-2011, 07:04 PM
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
XJ brakes don't release after WJ parts upgrade
I installed the booster and master cylinder from a 2000 WJ into my 1992 XJ. During the test drive, I braked easy twice. After the third stop the brakes wouldn't release. I loosened up the two bolts holding the master cylinder and pulled it back to release the built up vacuum. The brakes release immediately. Got it home but letting the pads cool before I try it again.
Any ideas what caused this.
Any ideas what caused this.
08-29-2011, 09:29 PM
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
Placing a 1/4" spacer between the firewall and booster appears to have fixed the problem. It resulted in a bit more free peddle and the top of the stroke and they work fine now. I was also able to adjust the p-valve to get the rear discs to lock up just after the front.
08-30-2011, 12:12 AM
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Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by PapasXJ
Placing a 1/4" spacer between the firewall and booster appears to have fixed the problem. It resulted in a bit more free peddle and the top of the stroke and they work fine now. I was also able to adjust the p-valve to get the rear discs to lock up just after the front.
08-31-2011, 09:14 AM
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
I'm running 35" on a Ford 8.8 rear and Ford D44 front.
As for performance: They are great. Driving into work I came on a late yellow light. Applying the brakes as I normally do I stopped nearly two car lengths short of the limit line.
As for performance: They are great. Driving into work I came on a late yellow light. Applying the brakes as I normally do I stopped nearly two car lengths short of the limit line.
08-31-2011, 11:07 AM
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Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by PapasXJ
I'm running 35" on a Ford 8.8 rear and Ford D44 front.
As for performance: They are great. Driving into work I came on a late yellow light. Applying the brakes as I normally do I stopped nearly two car lengths short of the limit line.
As for performance: They are great. Driving into work I came on a late yellow light. Applying the brakes as I normally do I stopped nearly two car lengths short of the limit line.
08-31-2011, 10:24 PM
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
It originally came from a 1976 Ford 4X4 Conversion Van. The guy I bought it from had already set up the mounts and ran it for a while on his XJ before going to D60's. I re geared it to my 4:88.
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