I will second what Ryan is saying. Especially getting the air out of
the valve.

If the calipers need moving to get the bleeder up top, then they are on
right left backward and need to be changed over.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Ryan wrote:
>
> I did the same swap this fall, and had the same problem. I had the
> hardest time getting all of the air out of the lines. As a matter of
> fact, the brakes were "professionally" bled, and STILL had air in the
> lines. The trick:
>
> - pull the rear calipers
> - put a block of wood (or something similar) between the pads. I used
> a socket that was the same width as the rotors.
> - rotate the caliper until the bleeder is at the top
> - hold down the bypass button on the proportioning valve (I think
> Jeep has a little clip for this at the parts counter). Otherwise, you
> just push the air back to the front.
> - bleed away.
>
> I still have the stock proportioning valve, and it works fine. I did
> upgrade to a larger master cylinder (for a '79 Firebird with manual
> 4-wheel disk), but only because the old one was leaking anyway.
>
> My suggestion: Bleed 'em again. When the air is gone, it will stop on
> a dime (well, for a jeep).
>
> Check out http://tsmmfg.com/Troubleshooting.htm for some good info as
> well. For a visual of why the pedal is falling 1/2 way before it
> grabs, see: http://auto.howstuffworks.com/master-brake1.htm
>
> Good luck!
> Ryan
> ryansweany@earthlink.net

 

Thanks guys. Can someone please suggest a model or part # for a
bigger, badder master cylinder that will easily fit right into a CJ7?


> If it drops in pressure you probably do need a new master cyl. and it
> would be a good time to try a bigger master cyl.
>
> I have done some reading and it seems you are not the only one with
> this problem. They mention some of the same thoughts like a tougher
> master cyl also mentioned is adjustments to the proportioning valve.
>

 

Thanks guys. Can someone please suggest a model or part # for a
bigger, badder master cylinder that will easily fit right into a CJ7?


> If it drops in pressure you probably do need a new master cyl. and it
> would be a good time to try a bigger master cyl.
>
> I have done some reading and it seems you are not the only one with
> this problem. They mention some of the same thoughts like a tougher
> master cyl also mentioned is adjustments to the proportioning valve.
>

 

Thanks guys. Can someone please suggest a model or part # for a
bigger, badder master cylinder that will easily fit right into a CJ7?


> If it drops in pressure you probably do need a new master cyl. and it
> would be a good time to try a bigger master cyl.
>
> I have done some reading and it seems you are not the only one with
> this problem. They mention some of the same thoughts like a tougher
> master cyl also mentioned is adjustments to the proportioning valve.
>

 

I have no experience with brake upgrades but this looked interesting.
http://www.monsterslayer.com/jeep/HydroBoost.htm
This guy has it on his CJ5
http://www.monsterslayer.com/jeep/Default.htm

Some good brake info here also.
http://www.4x4wire.com/jeep/tech/brakes/

On 5 Jan 2004 18:59:02 -0800, elambeth@hotmail.com (sm3gurpal) wrote:

>Thanks guys. Can someone please suggest a model or part # for a
>bigger, badder master cylinder that will easily fit right into a CJ7?
>
>
>> If it drops in pressure you probably do need a new master cyl. and it
>> would be a good time to try a bigger master cyl.
>>
>> I have done some reading and it seems you are not the only one with
>> this problem. They mention some of the same thoughts like a tougher
>> master cyl also mentioned is adjustments to the proportioning valve.
>>

 

I have no experience with brake upgrades but this looked interesting.
http://www.monsterslayer.com/jeep/HydroBoost.htm
This guy has it on his CJ5
http://www.monsterslayer.com/jeep/Default.htm

Some good brake info here also.
http://www.4x4wire.com/jeep/tech/brakes/

On 5 Jan 2004 18:59:02 -0800, elambeth@hotmail.com (sm3gurpal) wrote:

>Thanks guys. Can someone please suggest a model or part # for a
>bigger, badder master cylinder that will easily fit right into a CJ7?
>
>
>> If it drops in pressure you probably do need a new master cyl. and it
>> would be a good time to try a bigger master cyl.
>>
>> I have done some reading and it seems you are not the only one with
>> this problem. They mention some of the same thoughts like a tougher
>> master cyl also mentioned is adjustments to the proportioning valve.
>>

 

I have no experience with brake upgrades but this looked interesting.
http://www.monsterslayer.com/jeep/HydroBoost.htm
This guy has it on his CJ5
http://www.monsterslayer.com/jeep/Default.htm

Some good brake info here also.
http://www.4x4wire.com/jeep/tech/brakes/

On 5 Jan 2004 18:59:02 -0800, elambeth@hotmail.com (sm3gurpal) wrote:

>Thanks guys. Can someone please suggest a model or part # for a
>bigger, badder master cylinder that will easily fit right into a CJ7?
>
>
>> If it drops in pressure you probably do need a new master cyl. and it
>> would be a good time to try a bigger master cyl.
>>
>> I have done some reading and it seems you are not the only one with
>> this problem. They mention some of the same thoughts like a tougher
>> master cyl also mentioned is adjustments to the proportioning valve.
>>