94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

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
mailto:-------------------- http://www.----------.com/

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

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
mailto:-------------------- http://www.----------.com/

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

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
mailto:-------------------- http://www.----------.com/

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

You are describing back brake shoes out of adjustment. They usually
need to be hand set up before the automatic adjusters start working.
The automatic adjusters adjust when you hit the brakes in reverse after
hitting them in the forward direction to ---- it.

This also usually means the emergency brake will be at the end or almost
all the way out.

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

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

You are describing back brake shoes out of adjustment. They usually
need to be hand set up before the automatic adjusters start working.
The automatic adjusters adjust when you hit the brakes in reverse after
hitting them in the forward direction to ---- it.

This also usually means the emergency brake will be at the end or almost
all the way out.

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

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

You are describing back brake shoes out of adjustment. They usually
need to be hand set up before the automatic adjusters start working.
The automatic adjusters adjust when you hit the brakes in reverse after
hitting them in the forward direction to ---- it.

This also usually means the emergency brake will be at the end or almost
all the way out.

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

mdfranci@airmail.net 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

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

mdfranci@airmail.net did pass the time by typing:
> 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?

That section only applies if you get air into the system or want to do
a full up flush. You don't need the DRBII to bleed just the calipers.

What you do need to do is double check you put the adjustment stars in
the correct side and that the pads have been adjusted out so the drum
just slides on with a smidge of friction. To me it sounds like your
pads are not adjusted properly.

To adjust the brakes simply tug up on the emergency brake handle a
few times till it firms up about half way up. If they are way loose
this can take quite a few tugs.

--
DougW

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

mdfranci@airmail.net did pass the time by typing:
> 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?

That section only applies if you get air into the system or want to do
a full up flush. You don't need the DRBII to bleed just the calipers.

What you do need to do is double check you put the adjustment stars in
the correct side and that the pads have been adjusted out so the drum
just slides on with a smidge of friction. To me it sounds like your
pads are not adjusted properly.

To adjust the brakes simply tug up on the emergency brake handle a
few times till it firms up about half way up. If they are way loose
this can take quite a few tugs.

--
DougW

Re: 94 Grand Cherokee with ABS, can I bleed the brakes myself?
 

mdfranci@airmail.net did pass the time by typing:
> 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?

That section only applies if you get air into the system or want to do
a full up flush. You don't need the DRBII to bleed just the calipers.

What you do need to do is double check you put the adjustment stars in
the correct side and that the pads have been adjusted out so the drum
just slides on with a smidge of friction. To me it sounds like your
pads are not adjusted properly.

To adjust the brakes simply tug up on the emergency brake handle a
few times till it firms up about half way up. If they are way loose
this can take quite a few tugs.

--
DougW