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Mechanics of the OT: Brake drums
Posted on 5/19/15 at 7:27 pm
Posted on 5/19/15 at 7:27 pm
I've got a '99 4Runner. The front are disc brakes. The rear are drum brakes. I'm certain I need to replace the front rotors as it vibrates like a mother fricker when braking at 60 mph. How do I know if I need to replace the rear brake drums?
eta: E-brake doesn't work either. Is this related to needing to replace front or rear setups?
TIA: recent grad, not a car guy, not an OT baller (yet)
eta: E-brake doesn't work either. Is this related to needing to replace front or rear setups?
TIA: recent grad, not a car guy, not an OT baller (yet)
This post was edited on 5/19/15 at 7:30 pm
6
Posted on 5/19/15 at 7:29 pm to TimRiggins
quote:
How do I know if I need to replace the rear brake drums?
Take the rear drums off and inspect the shoes. If they are really thin or the rivets are starting to contact the drum it's time to change them. Shoes last a good while, but are much much harder to change than discs.
If you diy, do one side at a time so you can see how all the springs go back into place.
Posted on 5/19/15 at 7:30 pm to Napoleon
I've got a guy that will do both for me for $100. I'm gonna buy the parts just don't wanna buy the rear setup if I don't need to.
He'll do the front for $40. I've read its simple, but I'd rather pay.
He'll do the front for $40. I've read its simple, but I'd rather pay.
This post was edited on 5/19/15 at 7:32 pm
Posted on 5/19/15 at 7:33 pm to TimRiggins
If less than 100K, rear drums are probably OK.
Posted on 5/19/15 at 7:35 pm to TimRiggins
shite, I can do it myself, but I would still rather pay $40. 
Just look at the rear drums and shoes,
If they are really glazed and cracked up, they are bad
or is they are really thin
They don't have wear indicators and are more complicated than discs. But they also probably only do 20% of the braking so last a lot longer.
Just look at the rear drums and shoes,
If they are really glazed and cracked up, they are bad
or is they are really thin
They don't have wear indicators and are more complicated than discs. But they also probably only do 20% of the braking so last a lot longer.
Posted on 5/19/15 at 7:37 pm to TimRiggins
You can get them turned and they will measure to see if you have enough material to do it.
Drums and Rotors are quite inexpensive, I would just buy new ones unless you are on a tight budget.
Drums and Rotors are quite inexpensive, I would just buy new ones unless you are on a tight budget.
Posted on 5/19/15 at 7:37 pm to VetteGuy
quote:
If less than 100K, rear drums are probably OK.
This but if the e brake isn't working you need to check the self adjusters and make sure the rears are adjusted properly
Posted on 5/19/15 at 7:47 pm to Agforlife
Some cars now (Nissan Pathfinder was the one I first saw this on. Have both disc and drum brakes in the back.
A disc hydralic brake for the pedal, then a drum cable operated brake for the parking brake. I found this very odd and complex.
A disc hydralic brake for the pedal, then a drum cable operated brake for the parking brake. I found this very odd and complex.
Posted on 5/19/15 at 7:50 pm to Napoleon
Nah it's really not, the disc brakes are hydraulic and the little drum set up on the backside is the cable operated e brake.
Old school drum brakes have the same set up (hydraulic and cable) but use the same shoes for both.
The little gif you posted actually shoes old shool e brake in action, if it was regular braking the shoes would be pushed out equally from a wheel cylinder at the top
Old school drum brakes have the same set up (hydraulic and cable) but use the same shoes for both.
The little gif you posted actually shoes old shool e brake in action, if it was regular braking the shoes would be pushed out equally from a wheel cylinder at the top
This post was edited on 5/19/15 at 7:56 pm
Posted on 5/19/15 at 7:53 pm to Agforlife
quote:
This but if the e brake isn't working you need to check the self adjusters and make sure the rears are adjusted properly
Its just his cable. You have to remove it when taking off the rear drums. some people get tired of doing this if they are constantly pulling the rear end apart and lots of older cars and 4x4s have reworked and non functioning e-brakes.
Whenever you have the chance, just replace drum brakes. You dont have the visual or auditory cues of discs and its just not worth guessing if you werent the owner the last time they were changed.
Posted on 5/19/15 at 7:57 pm to TimRiggins
honestly, if you have someone that will do it for that cheap, I would certainly have him at least replace rear brake shoes and get the self adjuster working again....drum brakes are a nasty pain in the arse to work on...
ETA: to answer your question directly, the internal diameter of the rear brake drums needs to be measured...if there is too much wear, they should be replaced. you can typically see the original thickness versus the worrn part if you take them off...
ETA: to answer your question directly, the internal diameter of the rear brake drums needs to be measured...if there is too much wear, they should be replaced. you can typically see the original thickness versus the worrn part if you take them off...
This post was edited on 5/19/15 at 9:06 pm
Posted on 5/19/15 at 8:07 pm to Spankum
quote:
honestly, if you have someone that will do it for that cheap, I would certainly have him at least replace rear brake shoes and get the self adjuster working again....drum brakes are a nasty pain in the arse to work on...
All of this right here. They aren't difficult, just a pain in the arse. At least they tend to last a lot longer.
Posted on 5/19/15 at 9:28 pm to TimRiggins
My opinion on brakes. I change mine but have been doing so for many years.
If in doubt and especially if you have someone hopefully qualified to change them for so cheap, let them do it.
Would be tragic if you or someone in your family were to get into a wreck because of the want to save money.
If in doubt and especially if you have someone hopefully qualified to change them for so cheap, let them do it.
Would be tragic if you or someone in your family were to get into a wreck because of the want to save money.
Posted on 5/19/15 at 9:31 pm to TimRiggins
I'm just here to say that I brought my truck to Goodyear off of Siegen a few weeks back and they charged me $160 for a left rear drum replacement. Pretty sure I got absolutely fricked. Had no choice at the time and needed it done ASAP
Posted on 5/19/15 at 9:37 pm to TimRiggins
Some good advice here OP.
Good luck on the vehicle.
As was said, at the labor price you are being charged for the work, you have a winner there.
Good luck on the vehicle.
As was said, at the labor price you are being charged for the work, you have a winner there.
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