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Blaine.D

Dual Diagram Brake Booster

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Going to robbed some parts from a 1997-2001 Cherokee and one the things I am thinking about getting is the dual diagram brake booster from it . Would a 1997-2001 Cherokee brake booster work for this upgrade?

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37 minutes ago, Strokermjcomanche said:

I believe the rod is too long . The 95/96 XJ booster or WJ booster are the good swaps 

Thanks for the info.

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I have bled my brakes a lot and I have good pad, but my pedal doesn’t grab and isn’t firm till the later half of the pedal. Any help? It’s also pretty soft throughout but it still locks the brakes. Possible bad booster? I replaced it with one from a 87 Cherokee because mine hissed 

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56 minutes ago, Isaiah Hahn said:

I have bled my brakes a lot and I have good pad, but my pedal doesn’t grab and isn’t firm till the later half of the pedal. Any help? It’s also pretty soft throughout but it still locks the brakes. Possible bad booster? I replaced it with one from a 87 Cherokee because mine hissed 

 

1. Have you manually adjusted the rear brake shoes to minimize the amount of piston travel in the wheel cylinders before the rear brakes engage?

 

2. Did you follow the full procedure for bleeding the emergency circuit in the MJ brake system?

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^^^do this first, then consider the booster upgrade.  The self adjusters on the rear drums are anything but that.

 

FWIW, I now run an 02 KJ with drums on the rear 8.25.   Nothing makes the brakes work better than manually adjusting the rear drums.  About every 6 months I crawl under the back and adjust them.

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Ooor you could convert to disc all round.

 

Pretty sure this can be done on the Dana 35. I know it can be done with Chrysler 8.25 because I did mine. 

 

4 wheel disc + booster upgrade = put you through the windshield brakes.

 

If you got the coin you could upgrade even farther by using WJ front brakes, but that is very involved.

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1 hour ago, Eagle said:

 

1. Have you manually adjusted the rear brake shoes to minimize the amount of piston travel in the wheel cylinders before the rear brakes engage?

 

2. Did you follow the full procedure for bleeding the emergency circuit in the MJ brake system?

I adjusted and followed full procedure, but still soft 

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Soft peddle usually means air in the system ... somewhere. If you're certain you got all the air out, then the next things to look at are the booster and the master cylinder.

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