Hi Mike,
Since this happened after you change shoes I'd look to their
adjustment. I do it on assembly, hand turning the star until I can just
fit the drum on. The final adjustments with each stop in reverse. The
adjusters are left and right threaded so it is very important they be
reinstalled on the correct side. If you have to replace the master
cylinder try your best to bleed it at it's fittings and not allow air to
be pumped into the system. If there is air in the pump, then with the
ignition off pump the brake pedal thirty times to release the two
thousand pounds pressure stored in the accumulator, then it may bleed
normally.?
http://www.spanishtrailrovers.com/Te...bs_brakes.html
God Bless America, ßill O|||||||O
http://www.billhughes.com/

wrote:
>
> I have a 94 Grand Cherokee and I think it has a problem with the
> master cylinder. I changed the brake shoes on the rear this weekend and
> the front was done last year but I have excessive brake pedal when I
> apply the brakes. They do not drift down when I apply them, but they
> travel further down than I would like and if I let go and press again I
> have full pressure on the brakes like normal. Someone said either I
> need to bleed the brakes or the master cylinder is at fault. If it is
> the master cylinder, I can replace it but since it has ABS brakes I was
> told I cannot bleed the brakes without the DRB II scanner mentioned in
> my manual. The manual says to bleed as normal, then use the DRB II
> scanner tool, then bleed again as normal. Is there a way I can bleed
> the brakes without this tool, someone said I could just start the car
> and let it idle so the ABS can cycle on and then bleed as normal, can
> this be done?
> Thanks,
> Mike Francis