Rear brakes on truck

[Bruce King]

Had corrosion and dragging brakes so I took it to a well known mechanic. Getting some squeaking back there after the total rebuild. They texted me to see if everything was ok and I told them I might have to bring it back. I asked if they used anti-squeal and they said no. I don’t get it because most brakes will squeal without it. Anyone have a brake job where it got left out and no squeaking?

[John K Jordan]

Had corrosion and dragging brakes so I took it to a well known mechanic. Getting some squeaking back there after the total rebuild. They texted me to see if everything was ok and I told them I might have to bring it back. I asked if the used anti-squeal and they said no. I don’t get it because most brakes will squeal without it. Anyone have a brake job where it got left out and no squeaking?

I almost always do the brake work myself. I have never used anything called anti-squeal on truck or other vehicle brakes, drum or disk., front or rear. I've never had brakes squeal.

I feel left out. What kind of brakes squeal?

JKJ

[Jerome Stanek]

I almost always do the brake work myself. I have never used anything called anti-squeal on truck or other vehicle brakes, drum or disk., front or rear. I've never had brakes squeal.

I feel left out. What kind of brakes squeal?

it is a stock truck that hauls pigs

[Warren Lake]

Is used on both front and rear brakes at least on the elderly cars I drive. Maybe Permatex Orange was the last good quality one and purple before that but think orange is easier on rubber stuff where pins slide.

[Bruce King]

I had the problem on many cars when I forgot to use it. I spray it on the back of the pads and wait till very tacky. Maybe not turning the rotors has caused it. I have put high mileage on 3 BMW’s and always put on new discs on the 2nd or 3rd set of replacement pads with the red can of ant-squeal. Have heard many cars on the road squeaking. The squeal indicator on cars without the electronic pad thickness monitor has a much harsher squeal and on every brake application. A light squeal can’t be heard after a certain age or with damaged hearing from working on or being around certain types of machinery for 40 hours every week.

[Bill Dufour]

I think anti squeal is only for disk brakes. I have seen drums with a coil spring looped around the outer diameter. Modern vehicles do not have much extra space for such a thing and you do not want to coat the drum with rubber as it will cause overheating.
Bill D

[Bruce King]

My truck has disc on the rear even though it’s a 2003. It looks similar to drum on the outside because of the parking brake drums.

[Bill Dufour]

Now that we know it has rear disks, yes they should have put anti squeal on the pad backs before installation. I do not understand why that is not factory applied on replacement pads. Did the pins or slideways get cleaned and greased?
Bil lD

[Bruce King]

Everything back there to do with brakes was replaced except parking brake. Some pads come with a composite thin slab on the back for anti squeal but I had to coat those also.

[roger wiegand]

I'm missing something, both the pad surface and rotor are wear surfaces, the pad at least losing several mm of thickness over a few 10,000's of miles. Does the spray soak through them? How does it affect braking performance? If it's some kind of lubricant that would seem to be a Bad Thing for braking.

I've bought pads in the past that were suppose to be anti-squeal, and some that were supposed to not make as much dust. Can't say that I've noticed much difference. I did buy some "high performance" pads for a former BMW one time. I think they were more fade resistant, but they only lasted about 15k miles.

[Todd Trebuna]

I'm missing something, both the pad surface and rotor are wear surfaces, the pad at least losing several mm of thickness over a few 10,000's of miles. Does the spray soak through them? How does it affect braking performance? If it's some kind of lubricant that would seem to be a Bad Thing for braking.

I've bought pads in the past that were suppose to be anti-squeal, and some that were supposed to not make as much dust. Can't say that I've noticed much difference. I did buy some "high performance" pads for a former BMW one time. I think they were more fade resistant, but they only lasted about 15k miles.

The anti-squeal goes on the rear of the backing plate, between the caliper and the rear of the pad, the non-wear part. It prevents the metal on metal from squeaking.

[michael langman]

It pays to use good grease to lubricate the caliper pins and the grooves in the calipers the pads set into. I bought a pint of stabila synthetic grease years ago for brakes and it makes a huge difference in brake performance. Anti squeel goop helps also.
I had a heck of a time stopping the chatter on the buick lesabre when I first bought it. High quality pads and rotors with anti squeel finally got rid of the noise. GM pads and rotors were junk.

[roger wiegand]

The anti-squeal goes on the rear of the backing plate, between the caliper and the rear of the pad, the non-wear part. It prevents the metal on metal from squeaking.

Aha! Knew something was off in my thinking. That wasn't a place I would have expected squeal to come from. I usually hear it when we get to the metal-on-metal part of the brake pad life.

[Bruce King]

The squeaking that is unrelated to worn brakes is caused by a high frequency oscillation when the brakes are just barely to low application. All pads fit in loosely for reasons that I don’t know.

[lowell holmes]

I take my truck to the dealer and always I am satisfied. They know the idiosyncrasies of the vehicle.

[Doug Dawson]

It pays to use good grease to lubricate the caliper pins and the grooves in the calipers the pads set into.
Back in the 70’s some Datsun dealerships used Dow Corning 111 for this purpose. It rocked, and I still use it to this day. it’s an industrial steam valve lubricant, BTW.

[Myk Rian]

Had corrosion and dragging brakes so I took it to a well known mechanic. Getting some squeaking back there after the total rebuild. They texted me to see if everything was ok and I told them I might have to bring it back. I asked if they used anti-squeal and they said no. I don’t get it because most brakes will squeal without it. Anyone have a brake job where it got left out and no squeaking?
Never got squealing or squeaks. Never have used anti-squeal anything.
They might have gotten dirty fingers all over the pads.

[Dan McGonigle]

Thought I'd share my two cents. I've been a dealership tech for 10 years, ASE master, etc. What I've found is squealing is usually caused by low quality components or overheating or glazing of the brake rotors (both of which affect coefficient of friction), or in some cases, brake hardware contacting the rotor, which is less of a squeal and more of a dragging sound. Another important thing is brake pad shims, which fit onto the backside of the pad with a little lubrication between the shim and pad. This helps to absorb vibration and allows the pad to be able to move slightly independent of the caliper. If a customer comes in with a brake squeal and the pads are OE, in good condition with all shims and hardware intact, resurfacing of the brake rotors typically takes care of it. Adequate lubrication of the slide pins is also important, but a seized or sticking slide pin will usually cause a low brake pedal and not usually noise. I've never used any of the anti-squeal compounds, so I can't speak to them. I believe using OE parts and proper shim lubrication is best for noise free braking.

[michael langman]

Sounds like good lubricant for o rings and anything that moves and gets wet Doug. I'll have to get some next time I order some things.

I looked up the grease I mentioned. It was StaLube synthetic brake and caliper grease. Made by CRC. Not Stabila. There are so many good products out there today that can make a big difference in how long mechanical things will last, and how well they work.

[Bruce King]

The shims I’ve seen are already secured to the back of the pad.


Thought I'd share my two cents. I've been a dealership tech for 10 years, ASE master, etc. What I've found is squealing is usually caused by low quality components or overheating or glazing of the brake rotors (both of which affect coefficient of friction), or in some cases, brake hardware contacting the rotor, which is less of a squeal and more of a dragging sound. Another important thing is brake pad shims, which fit onto the backside of the pad with a little lubrication between the shim and pad. This helps to absorb vibration and allows the pad to be able to move slightly independent of the caliper. If a customer comes in with a brake squeal and the pads are OE, in good condition with all shims and hardware intact, resurfacing of the brake rotors typically takes care of it. Adequate lubrication of the slide pins is also important, but a seized or sticking slide pin will usually cause a low brake pedal and not usually noise. I've never used any of the anti-squeal compounds, so I can't speak to them. I believe using OE parts and proper shim lubrication is best for noise free braking.