Brake Drum Servicing Tips
#11
Senior Member
When you consider how many times you will do a rear brake job on vehicles with rear disc brakes, compared to this set up, it is sweet......
First time I ran into this set up, that single spring was a pain in the butt.....then the tool guy came around with this tool, and it was so easy to do....
Usually, a lot of brake dust back there, so wash down with Brake Klean....I always use never seize....use it on the adjuster screw, and also on the "lands" on the backing plate, that should be sanded down......now would be the time to replace rear wheel cylinders if they are leaking.......chances are, those drums can be turned, especially if this is the first brake job......even with 100-150K on them......then adjust the shoes outward until the drums have a little resistance when being put on.........I put the drum on, give a pull on the e-brake cable for that side, and then spin it.....if it spins easy, take the drum off, adjust outward slightly more, and repeat until there is a slight drag.........final adjustment can be done just by backing the car up and hitting the brakes a few times....
My wife'* old Bonneville, had her front pads replaced at 60K and 120K.....all I had to do was clean the rear brakes of break dust, and lube the adjuster and lands......she traded in the car at 170K, and the rears were still going strong....
First time I ran into this set up, that single spring was a pain in the butt.....then the tool guy came around with this tool, and it was so easy to do....
Usually, a lot of brake dust back there, so wash down with Brake Klean....I always use never seize....use it on the adjuster screw, and also on the "lands" on the backing plate, that should be sanded down......now would be the time to replace rear wheel cylinders if they are leaking.......chances are, those drums can be turned, especially if this is the first brake job......even with 100-150K on them......then adjust the shoes outward until the drums have a little resistance when being put on.........I put the drum on, give a pull on the e-brake cable for that side, and then spin it.....if it spins easy, take the drum off, adjust outward slightly more, and repeat until there is a slight drag.........final adjustment can be done just by backing the car up and hitting the brakes a few times....
My wife'* old Bonneville, had her front pads replaced at 60K and 120K.....all I had to do was clean the rear brakes of break dust, and lube the adjuster and lands......she traded in the car at 170K, and the rears were still going strong....
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WilliamE (05-13-2014)
#12
Senior Member
True Car Nut
The only thing I ever struggled with when doing a drum brake job is getting the old drums off. I find it tricky to reach in with a hook (usually made from coat hanger wire) to catch and pull on the adjuster release bar while reaching in with a screw driver to spin the adjuster wheel to release the brakes. Do you guys who do this professionally have a better way? Do you just beat the drums off with a 15 pound persuader?
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WilliamE (05-13-2014)
#13
Senior Member
True Car Nut
Seems the rear brakes don't take the brunt of the force when stopping, I have replaced my front pads a few times, but the rear brake shoes/drums have 135k on them, I never thought to remove the drum and put anti-seize on the adjuster, and the bleeders when I do the drums, but in the future I may start occasionally doing so, thank you for those tips.
I just hope that while doing the job I won't have to do the brake lines any time soon.
I just hope that while doing the job I won't have to do the brake lines any time soon.
depends on the car, ifs its been a more southern car you wont have to do lines and put never seize and such nearly as much, this is all caused by the salt we have. i pretty much figure if a line goes i do them all because they will be soon to go.
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WilliamE (05-13-2014)
#14
Retired
Last I heard, it was a 80/20 split. 80% of the braking is done up front, 20% in the rear. Thus why we go through pads quicker than shoes.
__________________
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
2011 Chevrolet Tahoe PPV
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
2011 Chevrolet Tahoe PPV
The following users liked this post:
WilliamE (05-13-2014)
#15
Senior Member
True Car Nut
Thread Starter
When you consider how many times you will do a rear brake job on vehicles with rear disc brakes, compared to this set up, it is sweet......
First time I ran into this set up, that single spring was a pain in the butt.....then the tool guy came around with this tool, and it was so easy to do....
Usually, a lot of brake dust back there, so wash down with Brake Klean....I always use never seize....use it on the adjuster screw, and also on the "lands" on the backing plate, that should be sanded down......now would be the time to replace rear wheel cylinders if they are leaking.......chances are, those drums can be turned, especially if this is the first brake job......even with 100-150K on them......then adjust the shoes outward until the drums have a little resistance when being put on.........I put the drum on, give a pull on the e-brake cable for that side, and then spin it.....if it spins easy, take the drum off, adjust outward slightly more, and repeat until there is a slight drag.........final adjustment can be done just by backing the car up and hitting the brakes a few times....
My wife'* old Bonneville, had her front pads replaced at 60K and 120K.....all I had to do was clean the rear brakes of break dust, and lube the adjuster and lands......she traded in the car at 170K, and the rears were still going strong....
First time I ran into this set up, that single spring was a pain in the butt.....then the tool guy came around with this tool, and it was so easy to do....
Usually, a lot of brake dust back there, so wash down with Brake Klean....I always use never seize....use it on the adjuster screw, and also on the "lands" on the backing plate, that should be sanded down......now would be the time to replace rear wheel cylinders if they are leaking.......chances are, those drums can be turned, especially if this is the first brake job......even with 100-150K on them......then adjust the shoes outward until the drums have a little resistance when being put on.........I put the drum on, give a pull on the e-brake cable for that side, and then spin it.....if it spins easy, take the drum off, adjust outward slightly more, and repeat until there is a slight drag.........final adjustment can be done just by backing the car up and hitting the brakes a few times....
My wife'* old Bonneville, had her front pads replaced at 60K and 120K.....all I had to do was clean the rear brakes of break dust, and lube the adjuster and lands......she traded in the car at 170K, and the rears were still going strong....
I ask because I know some pros like to have front rotors turned a little before installing them.
I have some Break Klean, but I may need to get a second can of it, as it sounds like one may not be enough, I want to get all of that brake dust out of there.
The only thing I ever struggled with when doing a drum brake job is getting the old drums off. I find it tricky to reach in with a hook (usually made from coat hanger wire) to catch and pull on the adjuster release bar while reaching in with a screw driver to spin the adjuster wheel to release the brakes. Do you guys who do this professionally have a better way? Do you just beat the drums off with a 15 pound persuader?
i dont even remember how many fronts i have had to do, its been a ton. maybe every other year with her doing 15 to 20k a year
depends on the car, ifs its been a more southern car you wont have to do lines and put never seize and such nearly as much, this is all caused by the salt we have. i pretty much figure if a line goes i do them all because they will be soon to go.
depends on the car, ifs its been a more southern car you wont have to do lines and put never seize and such nearly as much, this is all caused by the salt we have. i pretty much figure if a line goes i do them all because they will be soon to go.
Thanks for the feedback, and tips guys, I do appreciate it!
#16
Retired
Another thing I've noticed years ago. Long story, but I'll try and shorten it.
Back when I use to be a really impatient driver, (I mean YEARS ago) and I use to use the brakes real hard, many times I'd panic brake to a stop(you know, typical teen not paying attention). But what I did notice was, my rotors were always warping. Now, this is just my little theory, but if one were to slam on the brakes and hold the car with those hot brakes, this is what makes the rotors warp.
Once I learned not to do that anymore, I've noticed no more warped rotors.
So, increase your following distance, and if you do have to stop hard, stop shorter than you need to and pop it into neutral so you can let off the brakes a little and maybe roll forward some. This keeps the hot rotors from sitting in one spot.
Back when I use to be a really impatient driver, (I mean YEARS ago) and I use to use the brakes real hard, many times I'd panic brake to a stop(you know, typical teen not paying attention). But what I did notice was, my rotors were always warping. Now, this is just my little theory, but if one were to slam on the brakes and hold the car with those hot brakes, this is what makes the rotors warp.
Once I learned not to do that anymore, I've noticed no more warped rotors.
So, increase your following distance, and if you do have to stop hard, stop shorter than you need to and pop it into neutral so you can let off the brakes a little and maybe roll forward some. This keeps the hot rotors from sitting in one spot.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
2011 Chevrolet Tahoe PPV
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
2011 Chevrolet Tahoe PPV
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WilliamE (05-13-2014)
#17
Senior Member
True Car Nut
Thread Starter
Another thing I've noticed years ago. Long story, but I'll try and shorten it.
Back when I use to be a really impatient driver, (I mean YEARS ago) and I use to use the brakes real hard, many times I'd panic brake to a stop(you know, typical teen not paying attention). But what I did notice was, my rotors were always warping. Now, this is just my little theory, but if one were to slam on the brakes and hold the car with those hot brakes, this is what makes the rotors warp.
Once I learned not to do that anymore, I've noticed no more warped rotors.
So, increase your following distance, and if you do have to stop hard, stop shorter than you need to and pop it into neutral so you can let off the brakes a little and maybe roll forward some. This keeps the hot rotors from sitting in one spot.
Back when I use to be a really impatient driver, (I mean YEARS ago) and I use to use the brakes real hard, many times I'd panic brake to a stop(you know, typical teen not paying attention). But what I did notice was, my rotors were always warping. Now, this is just my little theory, but if one were to slam on the brakes and hold the car with those hot brakes, this is what makes the rotors warp.
Once I learned not to do that anymore, I've noticed no more warped rotors.
So, increase your following distance, and if you do have to stop hard, stop shorter than you need to and pop it into neutral so you can let off the brakes a little and maybe roll forward some. This keeps the hot rotors from sitting in one spot.
#19
Senior Member
True Car Nut
Thread Starter
#20
Senior Member
William I have never heard of turning new rotors or drums before installation......kind of defeats the purpose of getting them if the old ones are still within spec.....problem I see, are those extremely cheap products....can almost guarantee within a year, you will have pulsation problems.....Even had them pulsate right out of the box......
But I will say this.....the main cause of pulsation is improper torquing of lug nuts after rotations.....and yes, if you drive like a madman like Mike use to, overheating those rotors/drums will cause pulsations, too.....we had one guy with a Buick Century, who had pulsating drums on a regular basis........how many people actually use their e-brake? Well, this guy did.....he would really apply his e-brakes to his hot drums, and that would cause the pulsations......finally convinced him to only use the e-brake when parking on a hill.....problem solved....
But I will say this.....the main cause of pulsation is improper torquing of lug nuts after rotations.....and yes, if you drive like a madman like Mike use to, overheating those rotors/drums will cause pulsations, too.....we had one guy with a Buick Century, who had pulsating drums on a regular basis........how many people actually use their e-brake? Well, this guy did.....he would really apply his e-brakes to his hot drums, and that would cause the pulsations......finally convinced him to only use the e-brake when parking on a hill.....problem solved....