Rear Brake inspection question
09-04-2011, 05:06 PM
#1
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Year: 1990
Model: Cherokee
Engine: 4.0
Rear Brake inspection question
So I have been thinking of why it seems I have no rear brakes.The fronts are almost non existant on an incline.
I take off the Drivers rear tire and the drum is tight. It will wiggle almost all the way off but its apparent theres a "lip" I gingerly continue to walk it out and it comes off. Sure enough theres a lip in the drum. Brakes themselves are about 25%(guesstimate) Not worn all the way down,but will need replacing soon.
Passenger side drum comes off no problem at all. Passenger side looks the same as far as wear is concerned.
So looks like theres binding/adjustment issues on the drivers side.
Should I just take it all apart and lube up the adjusters on both sides?
What might cause binding on one side and not the other?
Top pic is Drivers side,bottom is passenger side
I take off the Drivers rear tire and the drum is tight. It will wiggle almost all the way off but its apparent theres a "lip" I gingerly continue to walk it out and it comes off. Sure enough theres a lip in the drum. Brakes themselves are about 25%(guesstimate) Not worn all the way down,but will need replacing soon.
Passenger side drum comes off no problem at all. Passenger side looks the same as far as wear is concerned.
So looks like theres binding/adjustment issues on the drivers side.
Should I just take it all apart and lube up the adjusters on both sides?
What might cause binding on one side and not the other?
Top pic is Drivers side,bottom is passenger side
09-04-2011, 05:13 PM
#2
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Year: 1991
Model: Cherokee
Engine: 4.0 HO
looks like you might have a leaky wheel cylinder on the second photo. If there is a ridge on the drum you need to have it either turned or replaced. While you have it apart you may as well replace the shoes. Do you have 9" or 10" drums? Coach
09-04-2011, 05:19 PM
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Year: 1997 & 1998
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Engine: 4.0
A few things to do first.
Have someone pump the brakes while you watch to see if they are moving outward toward where the drum would be or not.
Remove and check the star wheel to see if it's frozen or not. This could explain the difference between the two sides. This itself is not all that uncommon to happen, to have sides with slightly different wear. More common on drum brakes than on disc. If the adjuster is frozen, break apart, clean and lube before you reattach. If it is real bad, replace them.
Make sure wheel cylinders are moving on pressing the pedal (see first task above).
If this doesn't correct the issue , after replacing the pads and hardware also (it's likely time considering the wear and malfunctioning), you also may want to bleed the entire system. A soft pedal can be caused by contaminated fluid. Once this is ruled out, if you haven't seen significant improvement by now, I'd look to a malfunction of the master cylinder. Now, you'd have to replace that.
Have someone pump the brakes while you watch to see if they are moving outward toward where the drum would be or not.
Remove and check the star wheel to see if it's frozen or not. This could explain the difference between the two sides. This itself is not all that uncommon to happen, to have sides with slightly different wear. More common on drum brakes than on disc. If the adjuster is frozen, break apart, clean and lube before you reattach. If it is real bad, replace them.
Make sure wheel cylinders are moving on pressing the pedal (see first task above).
If this doesn't correct the issue , after replacing the pads and hardware also (it's likely time considering the wear and malfunctioning), you also may want to bleed the entire system. A soft pedal can be caused by contaminated fluid. Once this is ruled out, if you haven't seen significant improvement by now, I'd look to a malfunction of the master cylinder. Now, you'd have to replace that.
09-04-2011, 05:25 PM
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
you will never get great brakes on the older xjs with the single diaghpram booster upgradeing to the dual version is needed to get great brakes ,second thing it looks like the self adjuster lever is not in touch with the adjuster whell and there appearts to be slack in the adjuster cable
09-04-2011, 05:28 PM
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Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
A few things to do first.
Have someone pump the brakes while you watch to see if they are moving outward toward where the drum would be or not.
Remove and check the star wheel to see if it's frozen or not. This could explain the difference between the two sides. This itself is not all that uncommon to happen, to have sides with slightly different wear. More common on drum brakes than on disc. If the adjuster is frozen, break apart, clean and lube before you reattach. If it is real bad, replace them.
Make sure wheel cylinders are moving on pressing the pedal (see first task above).
If this doesn't correct the issue , after replacing the pads and hardware also (it's likely time considering the wear and malfunctioning), you also may want to bleed the entire system. A soft pedal can be caused by contaminated fluid. Once this is ruled out, if you haven't seen significant improvement by now, I'd look to a malfunction of the master cylinder. Now, you'd have to replace that.
Have someone pump the brakes while you watch to see if they are moving outward toward where the drum would be or not.
Remove and check the star wheel to see if it's frozen or not. This could explain the difference between the two sides. This itself is not all that uncommon to happen, to have sides with slightly different wear. More common on drum brakes than on disc. If the adjuster is frozen, break apart, clean and lube before you reattach. If it is real bad, replace them.
Make sure wheel cylinders are moving on pressing the pedal (see first task above).
If this doesn't correct the issue , after replacing the pads and hardware also (it's likely time considering the wear and malfunctioning), you also may want to bleed the entire system. A soft pedal can be caused by contaminated fluid. Once this is ruled out, if you haven't seen significant improvement by now, I'd look to a malfunction of the master cylinder. Now, you'd have to replace that.
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