'00 GJC uneven break wear
 

I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
fact the outer pads look like they only contact about half the surface
of the rotor. The other half of the surface is rusty and somewhat
corroded. Both rear rotors look the same. It's hard for me to tell if
there is a braking 'efficiency' problem as I don't drive the Jeep
regularly. It feels OK when I drive it but I suppose it could be
better.

Here is a picture of the right rear: http://i16.tinypic.com/43wrsrl.jpg

I replaced the pads about a year ago. They still look newish, like the
rear brakes are hardly used at all.

I can't remember if the Jeep has slide pins, if it does I would have
cleaned and greased them .

Any ideas on how to troubleshoot this issue?

Is there some adjustment that must be made on the rear brakes when
replacing pads?

Thanks!

Re: '00 GJC uneven break wear
 

Well, I just noticed I spelled "brake" wrong in the title. Oh well.
Can't change the past!

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear: http://i16.tinypic.com/43wrsrl.jpg
>
> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.
>
> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .
>
> Any ideas on how to troubleshoot this issue?
>
> Is there some adjustment that must be made on the rear brakes when
> replacing pads?
>
> Thanks!

Re: '00 GJC uneven break wear
 

Well, I just noticed I spelled "brake" wrong in the title. Oh well.
Can't change the past!

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear: http://i16.tinypic.com/43wrsrl.jpg
>
> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.
>
> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .
>
> Any ideas on how to troubleshoot this issue?
>
> Is there some adjustment that must be made on the rear brakes when
> replacing pads?
>
> Thanks!

Re: '00 GJC uneven break wear
 

Well, I just noticed I spelled "brake" wrong in the title. Oh well.
Can't change the past!

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear: http://i16.tinypic.com/43wrsrl.jpg
>
> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.
>
> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .
>
> Any ideas on how to troubleshoot this issue?
>
> Is there some adjustment that must be made on the rear brakes when
> replacing pads?
>
> Thanks!

Re: '00 GJC uneven break wear
 

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear:
> http://i16.tinypic.com/43wrsrl.jpg

Hmm... Odd pattern, the one cut line almost looks like a rock
has been caught by the pad or the pad material has gone. Most pads
are glued nowdays but a rivet could leave that mark. I'd take
the caliper off and have a closer look at the pad face.

Either way that disc is going to have to be milled or replaced.
A new pad won't seat on a surface like that. These days new hats
are almost as easy to do as having the originals milled. That and
depending on how deep that is you might not have enough thickness
left. (do both sides at the same time)

> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.

Rear brakes are only a minor part of braking. The fronts do most
of the work. When you take it apart check the piston to make sure
you didn't bend it when pushing it back in. I always use the old
pad and a big C clamp to press the piston back in.

> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .

They have slide pins. But usually if a caliper sticks it just
wears out one pad real badly.

> Any ideas on how to troubleshoot this issue?

Take the caliper off and look (post some pics) and the folks here
might be able to give you a better idea.

> Is there some adjustment that must be made on the rear brakes when
> replacing pads?

Only for the internal parking brake shoes.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: '00 GJC uneven break wear
 

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear:
> http://i16.tinypic.com/43wrsrl.jpg

Hmm... Odd pattern, the one cut line almost looks like a rock
has been caught by the pad or the pad material has gone. Most pads
are glued nowdays but a rivet could leave that mark. I'd take
the caliper off and have a closer look at the pad face.

Either way that disc is going to have to be milled or replaced.
A new pad won't seat on a surface like that. These days new hats
are almost as easy to do as having the originals milled. That and
depending on how deep that is you might not have enough thickness
left. (do both sides at the same time)

> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.

Rear brakes are only a minor part of braking. The fronts do most
of the work. When you take it apart check the piston to make sure
you didn't bend it when pushing it back in. I always use the old
pad and a big C clamp to press the piston back in.

> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .

They have slide pins. But usually if a caliper sticks it just
wears out one pad real badly.

> Any ideas on how to troubleshoot this issue?

Take the caliper off and look (post some pics) and the folks here
might be able to give you a better idea.

> Is there some adjustment that must be made on the rear brakes when
> replacing pads?

Only for the internal parking brake shoes.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: '00 GJC uneven break wear
 

DorkyGrin wrote:
> I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> fact the outer pads look like they only contact about half the surface
> of the rotor. The other half of the surface is rusty and somewhat
> corroded. Both rear rotors look the same. It's hard for me to tell if
> there is a braking 'efficiency' problem as I don't drive the Jeep
> regularly. It feels OK when I drive it but I suppose it could be
> better.
>
> Here is a picture of the right rear:
> http://i16.tinypic.com/43wrsrl.jpg

Hmm... Odd pattern, the one cut line almost looks like a rock
has been caught by the pad or the pad material has gone. Most pads
are glued nowdays but a rivet could leave that mark. I'd take
the caliper off and have a closer look at the pad face.

Either way that disc is going to have to be milled or replaced.
A new pad won't seat on a surface like that. These days new hats
are almost as easy to do as having the originals milled. That and
depending on how deep that is you might not have enough thickness
left. (do both sides at the same time)

> I replaced the pads about a year ago. They still look newish, like the
> rear brakes are hardly used at all.

Rear brakes are only a minor part of braking. The fronts do most
of the work. When you take it apart check the piston to make sure
you didn't bend it when pushing it back in. I always use the old
pad and a big C clamp to press the piston back in.

> I can't remember if the Jeep has slide pins, if it does I would have
> cleaned and greased them .

They have slide pins. But usually if a caliper sticks it just
wears out one pad real badly.

> Any ideas on how to troubleshoot this issue?

Take the caliper off and look (post some pics) and the folks here
might be able to give you a better idea.

> Is there some adjustment that must be made on the rear brakes when
> replacing pads?

Only for the internal parking brake shoes.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: '00 GJC uneven break wear
 

Thanks for the reply Doug. Here is a picture of the other side:
http://i1.tinypic.com/2mcj2uw.jpg

Seems like I didn't replace the rotor when I put new pads on it a year
ago. I can't remember. I know I did the fronts and put on new rotors
with new pads. Maybe I should have put new rotors on the rear
too...they didn't cost much. I think the fronts were $50 each.

Incidently, it's my wife's truck and she hates all the brake dust.
Would ceramic pads eliminate the brake dust?

Anyway, I'll tear down one side and take some pictures and post them.
Thanks for the advice.

DG


DougW wrote:
> DorkyGrin wrote:
> > I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> > fact the outer pads look like they only contact about half the surface
> > of the rotor. The other half of the surface is rusty and somewhat
> > corroded. Both rear rotors look the same. It's hard for me to tell if
> > there is a braking 'efficiency' problem as I don't drive the Jeep
> > regularly. It feels OK when I drive it but I suppose it could be
> > better.
> >
> > Here is a picture of the right rear:
> > http://i16.tinypic.com/43wrsrl.jpg
>
> Hmm... Odd pattern, the one cut line almost looks like a rock
> has been caught by the pad or the pad material has gone. Most pads
> are glued nowdays but a rivet could leave that mark. I'd take
> the caliper off and have a closer look at the pad face.
>
> Either way that disc is going to have to be milled or replaced.
> A new pad won't seat on a surface like that. These days new hats
> are almost as easy to do as having the originals milled. That and
> depending on how deep that is you might not have enough thickness
> left. (do both sides at the same time)
>
> > I replaced the pads about a year ago. They still look newish, like the
> > rear brakes are hardly used at all.
>
> Rear brakes are only a minor part of braking. The fronts do most
> of the work. When you take it apart check the piston to make sure
> you didn't bend it when pushing it back in. I always use the old
> pad and a big C clamp to press the piston back in.
>
> > I can't remember if the Jeep has slide pins, if it does I would have
> > cleaned and greased them .
>
> They have slide pins. But usually if a caliper sticks it just
> wears out one pad real badly.
>
> > Any ideas on how to troubleshoot this issue?
>
> Take the caliper off and look (post some pics) and the folks here
> might be able to give you a better idea.
>
> > Is there some adjustment that must be made on the rear brakes when
> > replacing pads?
>
> Only for the internal parking brake shoes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!

Re: '00 GJC uneven break wear
 

Thanks for the reply Doug. Here is a picture of the other side:
http://i1.tinypic.com/2mcj2uw.jpg

Seems like I didn't replace the rotor when I put new pads on it a year
ago. I can't remember. I know I did the fronts and put on new rotors
with new pads. Maybe I should have put new rotors on the rear
too...they didn't cost much. I think the fronts were $50 each.

Incidently, it's my wife's truck and she hates all the brake dust.
Would ceramic pads eliminate the brake dust?

Anyway, I'll tear down one side and take some pictures and post them.
Thanks for the advice.

DG


DougW wrote:
> DorkyGrin wrote:
> > I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> > fact the outer pads look like they only contact about half the surface
> > of the rotor. The other half of the surface is rusty and somewhat
> > corroded. Both rear rotors look the same. It's hard for me to tell if
> > there is a braking 'efficiency' problem as I don't drive the Jeep
> > regularly. It feels OK when I drive it but I suppose it could be
> > better.
> >
> > Here is a picture of the right rear:
> > http://i16.tinypic.com/43wrsrl.jpg
>
> Hmm... Odd pattern, the one cut line almost looks like a rock
> has been caught by the pad or the pad material has gone. Most pads
> are glued nowdays but a rivet could leave that mark. I'd take
> the caliper off and have a closer look at the pad face.
>
> Either way that disc is going to have to be milled or replaced.
> A new pad won't seat on a surface like that. These days new hats
> are almost as easy to do as having the originals milled. That and
> depending on how deep that is you might not have enough thickness
> left. (do both sides at the same time)
>
> > I replaced the pads about a year ago. They still look newish, like the
> > rear brakes are hardly used at all.
>
> Rear brakes are only a minor part of braking. The fronts do most
> of the work. When you take it apart check the piston to make sure
> you didn't bend it when pushing it back in. I always use the old
> pad and a big C clamp to press the piston back in.
>
> > I can't remember if the Jeep has slide pins, if it does I would have
> > cleaned and greased them .
>
> They have slide pins. But usually if a caliper sticks it just
> wears out one pad real badly.
>
> > Any ideas on how to troubleshoot this issue?
>
> Take the caliper off and look (post some pics) and the folks here
> might be able to give you a better idea.
>
> > Is there some adjustment that must be made on the rear brakes when
> > replacing pads?
>
> Only for the internal parking brake shoes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!

Re: '00 GJC uneven break wear
 

Thanks for the reply Doug. Here is a picture of the other side:
http://i1.tinypic.com/2mcj2uw.jpg

Seems like I didn't replace the rotor when I put new pads on it a year
ago. I can't remember. I know I did the fronts and put on new rotors
with new pads. Maybe I should have put new rotors on the rear
too...they didn't cost much. I think the fronts were $50 each.

Incidently, it's my wife's truck and she hates all the brake dust.
Would ceramic pads eliminate the brake dust?

Anyway, I'll tear down one side and take some pictures and post them.
Thanks for the advice.

DG


DougW wrote:
> DorkyGrin wrote:
> > I've got a GJC Laredo 4.7 and the rear brakes are wearing unevenly. In
> > fact the outer pads look like they only contact about half the surface
> > of the rotor. The other half of the surface is rusty and somewhat
> > corroded. Both rear rotors look the same. It's hard for me to tell if
> > there is a braking 'efficiency' problem as I don't drive the Jeep
> > regularly. It feels OK when I drive it but I suppose it could be
> > better.
> >
> > Here is a picture of the right rear:
> > http://i16.tinypic.com/43wrsrl.jpg
>
> Hmm... Odd pattern, the one cut line almost looks like a rock
> has been caught by the pad or the pad material has gone. Most pads
> are glued nowdays but a rivet could leave that mark. I'd take
> the caliper off and have a closer look at the pad face.
>
> Either way that disc is going to have to be milled or replaced.
> A new pad won't seat on a surface like that. These days new hats
> are almost as easy to do as having the originals milled. That and
> depending on how deep that is you might not have enough thickness
> left. (do both sides at the same time)
>
> > I replaced the pads about a year ago. They still look newish, like the
> > rear brakes are hardly used at all.
>
> Rear brakes are only a minor part of braking. The fronts do most
> of the work. When you take it apart check the piston to make sure
> you didn't bend it when pushing it back in. I always use the old
> pad and a big C clamp to press the piston back in.
>
> > I can't remember if the Jeep has slide pins, if it does I would have
> > cleaned and greased them .
>
> They have slide pins. But usually if a caliper sticks it just
> wears out one pad real badly.
>
> > Any ideas on how to troubleshoot this issue?
>
> Take the caliper off and look (post some pics) and the folks here
> might be able to give you a better idea.
>
> > Is there some adjustment that must be made on the rear brakes when
> > replacing pads?
>
> Only for the internal parking brake shoes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!