Car Forum / Honda Cars / September 2007
Doing my own brakes (97 Accord) - need some advice
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techman41973@yahoo.com - 08 Sep 2007 23:44 GMT I am a handy guy (engineering background) and I do quite a bit of my own work on my car (oil changes, electrical repairs, etc). I am considering doing my own brake work. With the miles I put on my car each year, I am servicing both front and rear brakes annually at a cost of close to $800. I know that servicing brakes on my own are risky, as my safety can be compromised. I am looking to hear from other "amateurs" who decided to do their own brakes and the problems they have encountered. Any tips and recommendations to quickly get up to speed would be helpfull. I have my service manual to my 97 Accord. Are their classes that any of you took to learn this from a professional? I know that rotors often need to be resurfaced professionally. Where do you guys go for that and how much does it usually cost? Are their videos that anyone would recommend?Since this is my only car, I am wondering if that means I need to keep spare rotors to swap out.
Elle - 09 Sep 2007 00:14 GMT >I am a handy guy (engineering background) and I do quite a >bit of my [quoted text clipped - 11 lines] > the problems > they have encountered. One thing I learned (writing as an amateur also with an engineering background, though a fairly "hands on" one) is that it's hard to mess up brakes so badly that the risk is any greater than a random non-brake part failing and causing injury.
Automotive brake systems are "mechanically tough" and have multiple redundancies in their design.
Some 12 years after I started doing my own front brake pad replacements and rear brake inspections, I took one community college (vocational side) course on brakes. Mostly what it did is give me more practice at quickly getting apart and putting back together my 91 Civic's rear drum brakes and similar drum brakes.
I replaced the front pads on my 91 Civic this past summer (after a somewhat exhausting do-it-yourself timing belt tensioner etc. replacement that went a bit amiss) and was amazed at how quickly I did them this time vs. the first time some 15 years ago. It took around fifteen minutes total, with five of those minutes going to put the front of my car on jackstands. Knowing exactly what tools will speed up the job helps immensely, of course.
Some (all?) 97 Accord's have rear drum brakes. The shoes on rear drum brakes wear much more slowly than the front brake's pads. This is good, because the pads are much easier to change.
I never had the rotors on my 91 Civic turned. The thickness is okay (a bit uneven), and they are a bit scored, but the brakes seem to work fine. Plus the car is likely only good for the proverbial (amongst those of us who drive cars into the ground!) "five more years." But YMMV, as far as wanting nicer rotors is concerned.
hls - 09 Sep 2007 00:15 GMT I am servicing both front and rear brakes annually at a
> cost of close to $800. That is AWFULLY expensive, I think
> I know that servicing brakes on my own are risky, as my safety can > be compromised. I am looking to hear fromother "amateurs" who [quoted text clipped - 7 lines] > is my only car, I am wondering if that means I need to keep spare > rotors to swap out. Years ago, I worked evenings and weekends as a mechanic to make extra money. I took classes and worked with professionals who could give me the benefit of their experience.
As far as safety wise, be very careful how you get your car up on supports, and how you take it down. (You already know the supports MUST be robust)
Sometimes rotors need to be resurfaced or replaced. BUT NOT ALWAYS If they must be resufaced, I take them to a local machine shop. I have dial indicators and micrometers which help me determine if the rotors are true and of sufficient thickness. I have a torque wrench to put the wheels back on properly.
If you are having to re-do brakes annually, something seem suspicious. Pads usually last a lot longer than that. Rotors do too.
What is your problem, or what are you trying to accomplish?
Hachiroku ハチロク - 09 Sep 2007 19:42 GMT > I am servicing both front and rear brakes annually at a >> cost of close to $800. [quoted text clipped - 26 lines] > and of sufficient thickness. I have a torque wrench to put the wheels > back on properly. Rotors at palces like CarQuest and AutoZone are anywhere from $8 to $50. Resurfacing costs $25-40 per rotor. I usually just buy the new rotors when doing the pads, then I don't have to fart around with it for 30,000 miles or more...
The way I drive my cars, that's ~3 years between jobs...
> If you are having to re-do brakes annually, something seem suspicious. > Pads usually last a lot longer than that. Rotors do too. > > What is your problem, or what are you trying to accomplish? Dave - 09 Sep 2007 00:44 GMT I'm gonna jump in here and offer general comments - I haven't done my Honda brakes yet but am close to doing so - I have done brakes on several other vehicles that I have owned and would recommend that you consider going ahead and do your own on the Honda - others may have more Honda-specific tips to suggest.
from the diagrams I have seen, Honda rotors look to be quite simple to exchange - some vehicles have the rotors as part of the hub assembly and this would complicate the issue so that you would have to deal with bearings and greasing them and torquing them, etc - apparently Honda has taken the higher road and has the rotors as a removeable disk attached to the hub so we don't have to get into that.
what has to be done is to remove the caliper (pads first) - take out a couple of screws holding the rotor in place - replace with a new rotor (or resurface your old one and replace) and reinstall the caliper and pads (probably new ones) - and you're done one thing to watch is master cylinder fluid level - you may have to compress the caliper piston (I use a C-clamp) to make room for new pads which have more thickness and this might overflow the master cylinder fluid level another thing to ware of is that you take care to hang the removed caliper so that it doesn't cause stress on the caliper hoses.
to determine whether to resurface or replace you first may determine the remaining thickness of your rotors by miking them and comparing to min specs taking into consideration the condition of your rotors (i.e. if they are deeply scored and grinding them down to remove the scoring will make them too thin..)
nowadays, it seems that resurfacing has taking a back seat to replacing (maybe it's more cost effective {if so, another sad state of affairs} and others will give advice about that) - but that seems to be the recommendations that garages I've dealt with offer - maybe it's simpler for them...
spare rotors: I wouldn't think that's necessary - the only risk might be in getting things apart and discovering you need a part or something and have no way of getting to a parts place to get it because your car is on jacks.... think ahead here > don't get too heavily into the project that you can't back out and drive to the parts store. If you have no other way to get to a place to have rotors resurfaced, and you find they are below spec by preliminary inspection, have new rotors on hand. You can always put the new pads in and drive for a bit without destroying them immediately if your pads are shot. Also make sure you have the necessary wrenches on hand - I don't know yet about the Honda ones, but I got caught on my Taurus ones not have the correct size Torx bit.
I'm sure someone here will post a link to a full-scale how-to for you. But these are my initial caveats for you to consider. As for your previous experience qualifications, I would say that you should have no problems since you can use tools and can read (the engineering part is only relevant regarding the literacy component - my son is an aerospace engineer ;-)
Dave.
>I am a handy guy (engineering background) and I do quite a bit of my > own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 11 lines] > is my only car, I am wondering if that means I need to keep spare > rotors to swap out.
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Hachiroku ハチロク - 09 Sep 2007 19:39 GMT > from the diagrams I have seen, Honda rotors look to be quite simple to > exchange - some vehicles have the rotors as part of the hub assembly and > this would complicate the issue so that you would have to deal with > bearings and greasing them and torquing them, etc - apparently Honda has > taken the higher road and has the rotors as a removeable disk attached to > the hub so we don't have to get into that. You need a press to service this system.
Scott Dorsey - 09 Sep 2007 02:10 GMT >I am a handy guy (engineering background) and I do quite a bit of my >own work on my car (oil changes, electrical repairs, etc). I am >considering doing my own brake work. With the miles I put on my car >each year, I am servicing both front and rear brakes annually at a >cost of close to $800. I know that servicing brakes on my own are >risky, as my safety can be compromised. It's an easy job, and it's not hard to do right. If you are nervous about it, get a friend to show you. But really, just replacing pads is easy to learn from the Haynes manual.
>I am looking to hear from >other "amateurs" who decided to do their own brakes and the problems >they have encountered. Any tips and recommendations to quickly get up >to speed would be helpfull. I have my service manual to my 97 Accord. >Are their classes that any of you took to learn this from a >professional? No, I watched my dad do it on our MGB when I was a kid, and that was all the training it took.
> I know that rotors often need to be resurfaced >professionally. Where do you guys go for that and how much does it >usually cost? Are their videos that anyone would recommend?Since this >is my only car, I am wondering if that means I need to keep spare >rotors to swap out. How much do spare rotors cost? If they are cheap, just get an extra set. Follow the directions in the manual and measure the rotors with a micrometer (I actually cheat and use a vernier caliper) to make sure they aren't too thin and aren't warped.
On most cars you won't need to resurface them unless they either get warped or they get wrecked by not replacing the pads soon enough. If you have access to a bench lathe at work, you can use it to resurface the things. But if they are cheap, just replace them if you see any signs of problem.
Ask someone at work who works on their own car to show you. It's an easy job to do. --scott
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Tegger - 09 Sep 2007 18:21 GMT > I am a handy guy (engineering background) and I do quite a bit of my > own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 11 lines] > is my only car, I am wondering if that means I need to keep spare > rotors to swap out. I made up this series of pages: http://www.tegger.com/hondafaq/rustybrakes/brakes1.html It specifically concerns an Integra/Civic, but may help as a general overview for your Accord.
Don't know if your Accord has rear drums or rear discs, and if discs, whether you've got drum-in-hat or PB on caliper. If you've got drums, the rears can be left alone for many years.
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Hachiroku ハチロク - 09 Sep 2007 19:38 GMT > I know that servicing brakes on my own are risky, as my safety can be > compromised Wow! How so? Once you get in there and see how easy it is, you'll wonder why you didn't so it sooner.
Also, look at it this way: if someone with no more than a High School education can do it, why can't you?
(HOLD IT!!!! That was meant as a JOKE, son. Those guys are well trained (usually) by their employers, and have to deal with EVERY SINGLE brake system on the road. When I get stumped, guess what I do...)
At any rate, the only thing I don't like about Hondas is that some of the rotors are pressed onto the bearing, and it makes it a REAL PITA. I think Honda got awa from this by '97.
I used to think the same way until I did my first brake job. And all wheel dics are a snap. If it has rear drums, pay attention, make notes, or use your digital camera. One time I put the adjuster on wrong on one side, but corrected it before I drove the car...
jim beam - 10 Sep 2007 05:10 GMT Hachiroku $B%O%A%m%/ wrote:
>> I know that servicing brakes on my own are risky, as my safety can be >> compromised [quoted text clipped - 11 lines] > At any rate, the only thing I don't like about Hondas is that some of the > rotors are pressed onto the bearing, and it makes it a REAL PITA. but it's a great way of reducing the probability of insufficiently trained brake jockeys causing brake judder...
> I think > Honda got awa from this by '97. [quoted text clipped - 3 lines] > your digital camera. One time I put the adjuster on wrong on one side, but > corrected it before I drove the car... Hachiroku ハチロク - 13 Sep 2007 03:21 GMT > Hachiroku $B%O%A%m%/ wrote: >> [quoted text clipped - 16 lines] > but it's a great way of reducing the probability of insufficiently trained > brake jockeys causing brake judder... And it works! My '88 Accord always went to the shop!
Our friend, "*" (um, who knows EVERYTHING about ALL cars) may not want to admit it, but *I* know when I'm over my head and it's time to consult a Pro...
And I usually do before I take on almost any job. I used to work at a CarQuest and know EVERY mechanic and tech in town, and know who to ask about what situation. If they say, "It's easy!" I listen to their direections/instructions and decide wheter to tackle the job myself or not.
Sometimes I do, sometimes I don't. But I alays get a better understanding (and a lot of respect for the guys who do the jobs I won't...)
>> I think >> Honda got awa from this by '97. [quoted text clipped - 3 lines] >> or use your digital camera. One time I put the adjuster on wrong on one >> side, but corrected it before I drove the car... * - 13 Sep 2007 14:45 GMT Hachiroku $B%O%A%m%/ wrote in article <x81Gi.6564$jn3.168@trndny05>...
> > Hachiroku $B%O%A%m%/ wrote: > >> [quoted text clipped - 22 lines] > admit it, but *I* know when I'm over my head and it's time to consult a > Pro... If you know when you are over your head, why, then, do you get all flustered when I point it out?
> And I usually do before I take on almost any job. I used to work at a > CarQuest and know EVERY mechanic and tech in town, and know who to ask [quoted text clipped - 11 lines] > >> or use your digital camera. One time I put the adjuster on wrong on one > >> side, but corrected it before I drove the car... Hachiroku ハチロク - 14 Sep 2007 01:21 GMT >> Our friend, "*" (um, who knows EVERYTHING about ALL cars) may not want >> to admit it, but *I* know when I'm over my head and it's time to consult >> a Pro... >> > If you know when you are over your head, why, then, do you get all > flustered when I point it out? Trick question?
Because you haven't yet?
Dude, you need to get 'unstuck' off yourself. You're just making an a.s out of yourself.
Perhaps you do know a boatload more than I do, but I don't really care, since your "Holier Than Thou" attitude just keeps making you come off looking like an arrogant a.s.
And as far as I can see, you haven't really helped anyone with anything, you just come across with put downs and ad hominems that do nothing but steer the conversation at hand away from the point.
Maybe if you dropped the attitude and added some content people would listen more to you.
* - 13 Sep 2007 15:59 GMT Hachiroku $B%O%A%m%/ wrote in article <x81Gi.6564$jn3.168@trndny05>...
> >> At any rate, the only thing I don't like about Hondas is that some of > >> the rotors are pressed onto the bearing, and it makes it a REAL PITA. [quoted text clipped - 3 lines] > > And it works! My '88 Accord always went to the shop! There you go again, letting your ego set you up for an embarassing fall.
If you knew ANYTHING about the automotive service and repair industry, you would know that the manufacturers are all trying to lock up ALL aftermarket service and repair by making their vehicles serviceable ONLY by dealership shops - blocking independent shops from working on their cars.
There is also an ongoing struggle by aftermarket independents to gain access to service informnation that the manufacturers are tagging as "propriatary" in order to keep it out of the aftermarket. (You, obviously, do not read ANY trade magazines in spite of your all your posturing.....)
It has nothing to do with squeezing the Shade Tree Garage "technicians" out. You guys are a mere drop in the bucket in the aftermarket service and repair picture, so give your ego a rest.
Hachiroku ハチロク - 14 Sep 2007 01:18 GMT > Hachiroku $B%O%A%m%/ wrote in article <x81Gi.6564$jn3.168@trndny05>... >> [quoted text clipped - 14 lines] > by dealership shops - blocking independent shops from working on their > cars. They're losing on me...I do about 80% of routine maintenance myself.
> There is also an ongoing struggle by aftermarket independents to gain > access to service informnation that the manufacturers are tagging as > "propriatary" in order to keep it out of the aftermarket. (You, > obviously, do not read ANY trade magazines in spite of your all your > posturing.....) Nope, I don't. I buy Haynes manuals and the shop service manual when I can. I bought a lot of shop manuals for my cars when I was working at a Toyota dealer.
> It has nothing to do with squeezing the Shade Tree Garage "technicians" > out. You guys are a mere drop in the bucket in the aftermarket service and > repair picture, so give your ego a rest. Wait...wait...YOU are telling ME to give MY ego a rest?!?!
There you are in that mirror again!
* - 11 Sep 2007 15:08 GMT Hachiroku $B%O%A%m%/ wrote in article <L4XEi.341$Z33.42@trndny08>...
> > I know that servicing brakes on my own are risky, as my safety can be > > compromised > > Wow! How so? I would humbly suggest that someone who cannot see the potential safety issues in working on brakes - even the simplest operations such as changing pads - is hardly qualified to give advice on servicing brakes.
> Once you get in there and see how easy it is, you'll wonder > why you didn't so it sooner. [quoted text clipped - 5 lines] > (usually) by their employers, and have to deal with EVERY SINGLE brake > system on the road. When I get stumped, guess what I do...) Yet, YOU feel qualified to encourage an untrained individual to tackle his own brakes.
> I used to think the same way until I did my first brake job. And all wheel > dics are a snap. If it has rear drums, pay attention, make notes, or use > your digital camera. One time I put the adjuster on wrong on one side, but > corrected it before I drove the car... That's the only mistake that you KNOW about. I'll bet you made a few more you DON'T know about.
Hachiroku ハチロク - 12 Sep 2007 10:54 GMT > Hachiroku $B%O%A%m%/ wrote in article <L4XEi.341$Z33.42@trndny08>... >> [quoted text clipped - 6 lines] > issues in working on brakes - even the simplest operations such as > changing pads - is hardly qualified to give advice on servicing brakes. What are you, a wise-a.s?
I've done the brakes on all my cars since 1999, including a 240SX, Tercels, Celicas, Supras, AWD Caravans, etc etc. Once you've done it once, it's elementary. I've rebuilt calipers, resurfaced rotors, done discs and drums.
How about adding something that helps the OP instead of being a Richard?
>> Once you get in there and see how easy it is, you'll wonder why you >> didn't so it sooner. [quoted text clipped - 8 lines] > Yet, YOU feel qualified to encourage an untrained individual to tackle his > own brakes. Sure. Why not? The guy's an engineer. I was just a lowly technician and was able to figure it out in under an hour.
>> I used to think the same way until I did my first brake job. And all > wheel [quoted text clipped - 5 lines] > That's the only mistake that you KNOW about. I'll bet you made a few more > you DON'T know about. I'll bet this is you:
http://www.pacificsites.com/~lakenews/LCFP%20Graphics/head_up_ass.gif
Ya know, after the first 12,000 miles, I stop wondering.
Stop following me around like a little puppy looking for attention, huh?
If you haven't anything to add, STFU. Remember, better to remain silent and be thought a fool, than to speak up and remove all doubt...
* - 12 Sep 2007 13:34 GMT Hachiroku $B%O%A%m%/ wrote in article <HHOFi.3975$Z33.1682@trndny08>...
> > Hachiroku $B%O%A%m%/ wrote in article <L4XEi.341$Z33.42@trndny08>... > >> [quoted text clipped - 52 lines] > If you haven't anything to add, STFU. Remember, better to remain silent > and be thought a fool, than to speak up and remove all doubt... Guys like you are dangerous!
You THINK you know everything, but you REALLY don't.
For example, you saw no potential safety issues with an inexperienced person working on brakes. I, on the other hand, have seen plenty of dangerous, inexperienced DIY errors in jobs as "simple" as replacing brake pads.
You, obviously, have never worked in a real service garage and had your Monday morning filled with fixing the Saturday/Sunday DIY screwups........then listened to the crying when correcting the screwup in addition to effecting the original repair came to two-or-three times what the original repair would have cost alone.
I'm merely pointing out the areas in which someone might want to reconsider your opinions on things......That's all.
I'm not going after you in particular, but you seem to make more assinine statements concerning automotive service than most of the other posters.
Don't flatter yourself into thinking you are some sort of celebrity worthy of a stalker.
Hachiroku ハチロク - 13 Sep 2007 03:17 GMT > Hachiroku $B%O%A%m%/ wrote in article <HHOFi.3975$Z33.1682@trndny08>... >> [quoted text clipped - 66 lines] > > You THINK you know everything, but you REALLY don't. Damn, son, you're looking in the mirror again.
Funny how you went Dead Silent when I said I wanted to know about the effects on steering and suspension geometry in the post about tires. Instead you come back with some BS about tire pressures and contact patches. The fact of the matter is, the car maker's spec was 32 PSI for the tires, and the tiremaker's max was 35 PSI. 3 PSI isn't going to make or break anything. The difference is negligible.
But you kept on rambling and rambling until I asked about geometry. Then is got quiet awful fast...
> For example, you saw no potential safety issues with an inexperienced > person working on brakes. I, on the other hand, have seen plenty of > dangerous, inexperienced DIY errors in jobs as "simple" as replacing brake > pads. WTF is there to a modern braking system?! Even ABS is no big mystery! What garage do you work at? What kind of boat do you have?
Take the wheel off. Look at the brakes. If you can figure it out, go ahead. If not, put the wheel back on, and drive to any competent shop (Sorry, *, thatr leaves you out...)
> You, obviously, have never worked in a real service garage and had your > Monday morning filled with fixing the Saturday/Sunday DIY > screwups........then listened to the crying when correcting the screwup in > addition to effecting the original repair came to two-or-three times what > the original repair would have cost alone. I worked at a Toyota dealer...doing brakes...after having taught myself...
> I'm merely pointing out the areas in which someone might want to > reconsider your opinions on things......That's all. NO! HE *HAS* TO DO HIS OWN BRAKES!!!! I SAID SO, THAT'S WHY!!!!
HEY, OP!!! IF YOU DON'T DO YOUR OWN BRAKES, I'LL HUNT YOU DOWN AND YELL NEENER, NEENER, NEENER UNTIL YOUR EARS FALL OFF!!!!
> I'm not going after you in particular, but you seem to make more assinine > statements concerning automotive service than most of the other posters. Just thought I'd join in and give you a hand.
> Don't flatter yourself into thinking you are some sort of celebrity worthy > of a stalker. Great! Then go away, you irritating little man!
* - 13 Sep 2007 15:41 GMT Hachiroku $B%O%A%m%/ wrote in article <P41Gi.5129$Ic3.3740@trndny09>...
> > Guys like you are dangerous! > > [quoted text clipped - 12 lines] > But you kept on rambling and rambling until I asked about geometry. Then > is got quiet awful fast... The geometry question came up about halfway through the thread.....
============================================ Hachiroku $B%O%A%m%/ wrote in article <DIYEi.347$Z33.129@trndny08>...
> The Mazda is a stock '89 626 with no modifications. As the header in the > original message says, "OEM Tires, Optional OEM tires, and totally [quoted text clipped - 10 lines] > So, I don't know what this means in terms of steering and suspension > goemetry. ==========================================
Tires DO NOT affect steering or suspension geometry. They are affected BY steering and suspension geometry.
You must change/modify steering and suspension components in order to change steering and suspension geometry.
Now, will you be so kind as to answer a few of the technical tire questions I have posed since the beginning of the "tire" thread?
> > For example, you saw no potential safety issues with an inexperienced > > person working on brakes. I, on the other hand, have seen plenty of > > dangerous, inexperienced DIY errors in jobs as "simple" as replacing brake > > pads. > > WTF is there to a modern braking system?! Even ABS is no big mystery! Okay! Give us a brief description of ABS and its components..........
> What garage do you work at? What kind of boat do you have? > > Take the wheel off. Look at the brakes. If you can figure it out, go > ahead. If not, put the wheel back on, and drive to any competent shop
> (Sorry, *, thatr leaves you out...) ASE, the people who have given me a number of certificates to hang on my wall, several automotive manufacturers - brake and others - who have ALSO provided certificates for training and updating session attendance going back to the late '60s, and the State Board of Education and Cultural Services that granted me a Vocational Automotive Technology teaching certificate would disagree with you.............
Oh yeah.....and my "regular" customers in the motorsports arena for whom I do suspension setups and dyno-test shocks and tires weekly.
What lubricant do you use on caliper pins?....on brake shoe pads?.....or do you even bother?
Where does the shim go on disc brakes?
On drum brakes, you're diassembling a cheap set of relines, and replacing them with a set of brand-new shoes. Which shoe goes towards the front?
Which cars require the use of a special tool to reset the caliper piston(s), and can be damaged if the tool is not used - or not used correctly? Remember, you're giving out general information here - not just for people who own the same make/model car as you do.
What is the difference between a fixed and a floating caliper?
What's the prupose of a metering valve - NOT proportioning valve - on a disc brake setup? How does one diagnose it? (HINT: If you know what it actually IS, you are halfway to diagnosing it.)
> > You, obviously, have never worked in a real service garage and had your > > Monday morning filled with fixing the Saturday/Sunday DIY [quoted text clipped - 3 lines] > > I worked at a Toyota dealer...doing brakes...after having taught myself... Which confirms my initial statement......you've been "protected" from the real world by a Service Manager who stuck his nose in the air when a DIY came in with a screwup, sending him down the road......You've NEVER had to undo dangerous, screwed-up repairs.
I've always helped out the hapless DIY-ers who erroneously followed advice dished out by people like you - advice that was worth every single cent they paid for it.
That's part of the reason for the soapbox, Bunky! I've seen a lot of it!
I've since decided to give other shops the opportunity to help out people who REALLY don't appreciate the help, and continue to paint themselves into corners by taking sketchy advice from unqualified strangers on the 'net. I send them down the street to the Shade Tree Garage guy who works for $10/hour "CASH-under-the-table" evenings and weekends, and thinks he's making BIG money.
Tegger - 13 Sep 2007 18:37 GMT As a certified shade-tree grease monkey who hasn't broken a bolt in twenty years, I'll try to answer these questions...
> What lubricant do you use on caliper pins?....on brake shoe > pads?.....or do you even bother? Sil-Glyde on the pins if they have rubber boots. Anti-seize if they do not.
Molykote M-77 or Sil-Glyde between pads and shims.
For shoes, a dab of anti-seize where the shoe contacts the backing plate.
> Where does the shim go on disc brakes? If you mean the anti-squeal shims...on the backs of the pads. Some applications have two shims on the inner pad.
The other find of shims I'm aware of go between the pad and the padss bracket. These give the pads a slippery surface to ride on as they wear towards the rotor.
> On drum brakes, you're diassembling a cheap set of relines, and > replacing them with a set of brand-new shoes. Which shoe goes towards > the front? The short shoe, assuming the brakes have one leading shoe and one trailing shoe.
> Which cars require the use of a special tool to reset the caliper > piston(s), and can be damaged if the tool is not used - or not used > correctly? Remember, you're giving out general information here - not > just for people who own the same make/model car as you do. My only experience with rear calipers that require a tool are those where the piston must be screwed back in. These all had parking brake mechanisms as part of the caliper.
Do drum-in-hat type rear discs require a caliper piston tool, or can you just push those in?
> What is the difference between a fixed and a floating caliper? Floating caliper uses the force of piston(s) on only one side of the caliper to pull both inner and outer pads into contact with the rotor. The caliper must slide over to allow the outer pads to contact.
Fixed calipers usually have pistons on both sides, so there is no need to enable the caliper to slide
I saw a weird setup on a Nissan pickup once. The caliper itself was fixed, but the assembly was still "floating", with two pistons on just the one side. Very interesting.
> What's the prupose of a metering valve - NOT proportioning valve - on > a disc brake setup? How does one diagnose it? (HINT: If you know what > it actually IS, you are halfway to diagnosing it.) It keeps the front discs from working before the rear drums have begun to work. I suppose if you had a problem with the rear brakes not working but the fronts working fine, you'd investigate the metering valve if everything else checked out OK.
How'd I score?
 Signature Tegger
Hachiroku ハチロク - 14 Sep 2007 01:14 GMT >> Where does the shim go on disc brakes? > > If you mean the anti-squeal shims...on the backs of the pads. Some > applications have two shims on the inner pad. Shoot!!! I thought they went between the pads and the rotors!
No WONDER I keep hitting kids, trees, old ladies, etc...
But, I'm racking up points like a champ!!!
Hachiroku ハチロク - 14 Sep 2007 01:15 GMT >> On drum brakes, you're diassembling a cheap set of relines, and >> replacing them with a set of brand-new shoes. Which shoe goes towards >> the front? > > The short shoe, assuming the brakes have one leading shoe and one trailing > shoe. On the one car I have with drum rears, they're both the same size!!!
What do I do?!?! What do I do?!?!
Grumpy AuContraire - 16 Sep 2007 17:31 GMT >>>On drum brakes, you're diassembling a cheap set of relines, and >>>replacing them with a set of brand-new shoes. Which shoe goes towards [quoted text clipped - 6 lines] > > What do I do?!?! What do I do?!?! IF the shoes have different lengths, one is primary and the other secondary and oddly, the secondary should be the longer of the two and is on the rear facing side of the backing plate...
JT
Tegger - 14 Sep 2007 01:18 GMT >> What's the prupose of a metering valve - NOT proportioning valve - on >> a disc brake setup? How does one diagnose it? (HINT: If you know what [quoted text clipped - 3 lines] > working but the fronts working fine, you'd investigate the metering > valve if everything else checked out OK. On second reading, this sounds dumb. I've never had to tackle one, so I'm guessing.
 Signature Tegger
* - 14 Sep 2007 13:37 GMT Tegger <tegger@tegger.c0m> wrote in article <Xns99AA8A68D48BEtegger@207.14.116.130>...
> As a certified shade-tree grease monkey who hasn't broken a bolt in > twenty years, I'll try to answer these questions... [quoted text clipped - 62 lines] > > How'd I score? Excellent!
You know a LOT more than SOME of the participants here......
One problem, however, is your use of anti-seize in place of lubricant.
Most anti-seize compounds are designed to keep non-moving things from sticking together, NOT for lubrication of moving items.
Some anti-seize compounds, those intended for oxygen sensors for example, contain glass beads. What sort of lubrication do you suppose glass beads provide?
For drum brake shoe pads, there is "Brake Lube" - which is, simply, white lithium grease.
Tegger - 14 Sep 2007 19:43 GMT > Tegger <tegger@tegger.c0m> wrote in article > <Xns99AA8A68D48BEtegger@207.14.116.130>...
>> How'd I score? > > Excellent! > > You know a LOT more than SOME of the participants here...... Glad to know that.
> One problem, however, is your use of anti-seize in place of lubricant. > [quoted text clipped - 4 lines] > example, contain glass beads. What sort of lubrication do you suppose > glass beads provide? They roll, to prevent seizure of the sensor?
> For drum brake shoe pads, there is "Brake Lube" - which is, simply, > white lithium grease. That's what I use in electrical connectors, which is what the factory used. I did not know you could use it for where the shoes contact the backing plate.
 Signature Tegger
Grumpy AuContraire - 16 Sep 2007 17:40 GMT snip
>>For drum brake shoe pads, there is "Brake Lube" - which is, simply, >>white lithium grease. > > That's what I use in electrical connectors, which is what the factory used. > I did not know you could use it for where the shoes contact the backing > plate. Yep, been using "cup grease" for contact points for conventional brakes since... well, er.. forever!
<G>
JT
Hachiroku ハチロク - 14 Sep 2007 21:54 GMT > You know a LOT more than SOME of the participants here...... > > One problem, however, is your use of anti-seize in place of lubricant. I---I *LEARNED* something USEFUL from "*" today!
<THUD!>
Tegger - 15 Sep 2007 02:07 GMT > Some anti-seize compounds, those intended for oxygen sensors for > example, contain glass beads. What sort of lubrication do you suppose > glass beads provide? First post doesn't seem to have "taken". Repost follows:
The beads roll, to prevent seizure of the sensor?
> For drum brake shoe pads, there is "Brake Lube" - which is, simply, > white lithium grease. That's what I use in electrical connectors, which is what the factory used. I did not know you could use it for where the shoes contact the backing plate.
End of repost.
 Signature Tegger
* - 15 Sep 2007 14:38 GMT ----------
> From: Tegger <tegger@tegger.c0m> > Newsgroups: rec.autos.makers.honda; rec.autos.tech; rec.autos.misc [quoted text clipped - 8 lines] > > The beads roll, to prevent seizure of the sensor? Don't confuse "seizing" with "galling."
In this case we use the following descriptions......
Threads "gall" in motion. Dry threads need lubrication to keep metal from transfering from one side to the other.
Threads and components "seize" while sitting still - often due to the properties of different metals reacting to heat/water/exhaust chemicals/galvanic activity/etc.
Threads/components are "seized" by rust and corrosion. You need an anti-seize compound that works to prevent this - not lubricate the components.
The use of anti-seize has increased in direct relationship to the increased use of aluminum components with steel fasteners, and other different metal interactions in the modern automobile.
jim beam - 15 Sep 2007 14:54 GMT > ---------- >> From: Tegger <tegger@tegger.c0m> [quoted text clipped - 24 lines] > anti-seize compound that works to prevent this - not lubricate the > components. well, "lubrication" is separation of the working parts. in that respect, antiseize does "lubricate". and yes, corrosion is often a factor, but there's also cold welding. if two metals are in intimate contact, they can mechanically fuse [and this is not corrosion]. particularly at elevated temperatures. it's the same process that causes galling.
> The use of anti-seize has increased in direct relationship to the increased > use of aluminum components with steel fasteners, and other different metal > interactions in the modern automobile. it's more that use has increased in proportion to its availability. you're right that dissimilar metals can corrode and seize spectacularly, [as can steel on steel] but antiseize doesn't always stop that. and aluminum/steel combinations have been used since the dawn of automotive systems.
Tegger - 18 Sep 2007 12:29 GMT > ---------- >> From: Tegger <tegger@tegger.c0m> [quoted text clipped - 16 lines] > Threads "gall" in motion. Dry threads need lubrication to keep metal > from transfering from one side to the other. It has been my impression that galling was a phenomenon most commonly experienced between metals that were close in hardness. In other words, if one metal was significantly softer than the other, galling wouldn't occur for the reason that the softer metal would simply smear instead of balling up.
> Threads and components "seize" while sitting still - often due to the > properties of different metals reacting to heat/water/exhaust > chemicals/galvanic activity/etc. And simple surface-texture embedment. From what I've been told by an engineer at BoltScience, embedment is the primary reason that loosening torque can be several times what's applied while tightening.
> Threads/components are "seized" by rust and corrosion. You need an > anti-seize compound that works to prevent this - not lubricate the > components. Oils are not compatible with water. If oil is present, water cannot generally react with the metal. I have found that just about any kind of oily substance will keep rust off the threads, provided it does not wash away.
I have found (after a lifetime of living in the Rust Belt) that rust rarely penetrates more than one turn of thread. It's corrosion of the head to its mating surface that makes such bolts hard to remove. If the bolt goes into a through hole, the end thread of the bolt will seize at its bottom turn, which is why these often need to be drilled out.
> The use of anti-seize has increased in direct relationship to the > increased use of aluminum components with steel fasteners, and other > different metal interactions in the modern automobile. I wonder why my car has absolutely no substances applied to any of its fasteners that go into aluminum holes? I guess the bolt itself may have a plating or wash that consists of an anti-seize? Toyota's OEM spark plugs that were intended for 100K mile intervals used to be cadmium plated, to prevent seizure. I'm told they've replaced the cadmium with something else that's supposed to be more "environment friendly".
 Signature Tegger
Grumpy AuContraire - 18 Sep 2007 13:28 GMT >>---------- >> [quoted text clipped - 23 lines] > for the reason that the softer metal would simply smear instead of balling > up. The most flagrant example of galling, (in my experience), was with large stainless steel bolts/nuts in the semiconductor equipment mfg biz.
Since such assembly operations took place in clean room conditions, use of grease, oil etc. was not an option. In fact, the only possibility wa the use of IPA, (isopropanol), which worked to reach the required torque spec...
JT
(No longer dons bunny suits)
Scott Dorsey - 17 Sep 2007 16:36 GMT >> Some anti-seize compounds, those intended for oxygen sensors for >> example, contain glass beads. What sort of lubrication do you suppose [quoted text clipped - 3 lines] > >The beads roll, to prevent seizure of the sensor? Yes, it's sort of a kind of lubricant.
Another example of that sort of macrolubrication is bentonite grease, which is made with a kind of clay that has big flat pieces that slide easily across one another.
>> For drum brake shoe pads, there is "Brake Lube" - which is, simply, >> white lithium grease. > >That's what I use in electrical connectors, which is what the factory used. >I did not know you could use it for where the shoes contact the backing >plate. I tend to suspect silicone dielectric grease is more effective on connectors, but the lithium grease is cheaper and should last twenty or thirty years. --scott
 Signature "C'est un Nagra. C'est suisse, et tres, tres precis."
jim beam - 19 Sep 2007 05:31 GMT >>> Some anti-seize compounds, those intended for oxygen sensors for >>> example, contain glass beads. What sort of lubrication do you suppose [quoted text clipped - 18 lines] > I tend to suspect silicone dielectric grease is more effective on > connectors, it is - it's oem. bearing grease isn't a good insulator, is not good in the wet and can deteriorate the plastic materials used in the connectors
> but the lithium grease is cheaper and should last twenty or > thirty years. it's not the grease that matters - it's the connectors!
> --scott Hachiroku ハチロク - 14 Sep 2007 01:13 GMT > What lubricant do you use on caliper pins?....on brake shoe pads?.....or > do you even bother? [quoted text clipped - 14 lines] > disc brake setup? How does one diagnose it? (HINT: If you know what it > actually IS, you are halfway to diagnosing it.) RTFM...it's all in there.
* - 12 Sep 2007 13:34 GMT Hachiroku $B%O%A%m%/ wrote in article <HHOFi.3975$Z33.1682@trndny08>...
> > Hachiroku $B%O%A%m%/ wrote in article <L4XEi.341$Z33.42@trndny08>... > >> [quoted text clipped - 15 lines] > > How about adding something that helps the OP instead of being a Richard? I believe that, in pointing out your erroneous statements, and cavalier attitude towards effecting SAFE repairs, I AM actually contributing something to the OP....................
You, OTOH, may exercise your right to disagree.
Hachiroku ハチロク - 13 Sep 2007 03:08 GMT > Hachiroku $B%O%A%m%/ wrote in article <HHOFi.3975$Z33.1682@trndny08>... >> [quoted text clipped - 26 lines] > > You, OTOH, may exercise your right to disagree. Thanks! Brakes are No Great Mystery. If the OP gets even a Haynes manual, it should take far less than an afternoon to figure out. There's a set of pads or shoes, and a friction surface. Big deal.
I showed my daughter how to do brakes when she was 14.
Al G - 11 Sep 2007 18:57 GMT >I am a handy guy (engineering background) and I do quite a bit of my > own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 11 lines] > is my only car, I am wondering if that means I need to keep spare > rotors to swap out. Ok, here's one I can answer, having just done this on my '98 Accord.
First, it is easier than any car I've owned. My dealer wanted $112 per end, plus parts. The pads(mine has disks on both ends), cost $118 and since I already had a caliper expander, that was all I spent. (Total dealer would have been $336)
The front: My accord has wheels that you can reach through to check the wear on the disk. Mine had minimal wear, probably a couple thousandths, you could just barely hook a fingernail on the lip. After removing the wheel, pull the lower caliper bolt, and the assembly rotates up and out of the way. The old pads pop out rather easily. Drain about half of the brake fluid from the reservoir, so when you expand the caliper it doesn't overflow. (I used a turkey baster). Expand the caliper using c clamps or a tool, insert the new pads,(with shims and the included anti-seize compound) rotate into position and replace the lower bolt. Repeat for the other wheel. Having done this, I think I could do it in an hour, with hand tools, including the jacking the car using the little scissors jack. Why Honda thinks it is worth 2 hours each end is beyond me. If you need to get the rotors resurfaced, a shop in town will do it for around $10 per rotor. The rotors are held on with 4 bolts(I think), and have some predrilled and tapped holes that you can use to pull stuck rotors off. (you put bolts in the holes, and screw them in, forcing the rotor out). All in all, a very clean design, and easy to work on.
The rear brakes are only slightly different, because of the emergency brake. I had to pull both caliper bolts, and the calipers are expanded by rotating them as opposed to just pushing on them. There is a little box type tool that does this, or you can use a very large screwdriver. Because this adjustment is in the caliper, you won't have fluid overflow issues like you do on the front.
All in all, mine took a couple of hours, cost me only the official Honda pads, and I would recommend this job to any backyard mechanic. If you have problems, bring them here for a wealth of good advice.
Al G
smallg - 16 Sep 2007 22:52 GMT >I am a handy guy (engineering background) and I do quite a bit of my > own work on my car (oil changes, electrical repairs, etc). I am > considering doing my own brake work. With the miles I put on my car > each year, I am servicing both front and rear brakes annually at a > cost of close to $800. Is this just for pads? Sounds w-a-y high.
>I know that servicing brakes on my own are > risky, as my safety can be compromised. Not really. I've been doing my own brake work on my cars (including my BMW) for years. Disk brake service is pretty easy, at least on the cars I've had. It takes some muscle at times, and you'll get plenty dirty, but it's not that difficult or complicated.
>I am looking to hear from > other "amateurs" who decided to do their own brakes and the problems [quoted text clipped - 3 lines] > professional? I know that rotors often need to be resurfaced > professionally. Nope, don't fall for that one. I've never in my life had a rotor turned. If they get too bad, I just replace the rotors with new ones. I replace the rotors on my BMW with every other pad change. My Japanese rotors last a good deal longer.
>Where do you guys go for that and how much does it > usually cost? For just pads for all four wheels, maybe $80? I don't remember, it's been a while (DON'T go to the dealership for these.)
>Are their videos that anyone would recommend? Probably won't need any videos. A Haynes or Bentleys manual might be a good idea, but really, I'd bet those Honda brakes are pretty straightforward and you could do it just eyeballing the situation.
 Signature ----------------- Jay McKenzie http://home.bellsouth.net/p/pwp-wstviews
Hachiroku ハチロク - 16 Sep 2007 23:35 GMT >>I am a handy guy (engineering background) and I do quite a bit of my >> own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 11 lines] > I've had. It takes some muscle at times, and you'll get plenty dirty, > but it's not that difficult or complicated. oh, no! Don't let * see this post! He'll tell you how you've been doing it wrong for years, and endangering everybody including yourself due to 'invisible' things only he seems to be able to see...
Now, in all seriousness, we're talking brakes on a car here, not on the landing gear of a Space Shuttle. Pads, a rotor, a caliper is pretty much it. No advanced degree in Aerospace engineering or a Mensa IQ required.
To the OP: pick up a manual and pre-read it before attempting. Even if you decide not to do the job, it helps you understand your car better.
Also, look here:
http://www.autozone.com/az/cds/en_us/0900823d/80/0d/1b/f1/0900823d800d1bf1/repai rInfoPages.htm
this is for a 1995 Accord, but you can see it's not too hard to comprehend.
Of course, I think * managed to scare the OP into giving up anyway...
loewent - 17 Sep 2007 04:22 GMT I hate guys like this, who think its up to them to make everybody think "just take it to the shop"
Let me tell you, I've seen more botch brake jobs, timing belts, etc etc come out of these 'qualified' shops than you can shake a stick at.
As a rule of thumb, I think that if someone thinks they are intelligent enough to comprehend the brakes, and are confident enough, let them at em!
Enough of this BS 'ooooo brakes are so complicated'...
:)
>>>I am a handy guy (engineering background) and I do quite a bit of my >>> own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 20 lines] > >Of course, I think * managed to scare the OP into giving up anyway... Hachiroku ハチロク - 18 Sep 2007 03:10 GMT > I hate guys like this, who think its up to them to make everybody think > "just take it to the shop" I think he has a boat payment to make...
> Let me tell you, I've seen more botch brake jobs, timing belts, etc etc > come out of these 'qualified' shops than you can shake a stick at. [quoted text clipped - 3 lines] > > Enough of this BS 'ooooo brakes are so complicated'... You'd be amazed how many people say, "You do your own brakes?!
Um, yeah.
> :) > [quoted text clipped - 23 lines] >> >>Of course, I think * managed to scare the OP into giving up anyway... * - 17 Sep 2007 13:58 GMT Hachiroku $B%O%A%m%/ wrote in article <WciHi.2908$Ap2.265@trndny05>...
> To the OP: pick up a manual and pre-read it before attempting. How does one "pre-read" something?
You either read it or you don't!
Hachiroku San blows the English language, again!
Nobody - 17 Sep 2007 07:05 GMT > I am a handy guy (engineering background) and I do quite a bit of my > own work on my car (oil changes, electrical repairs, etc). I am [quoted text clipped - 11 lines] > is my only car, I am wondering if that means I need to keep spare > rotors to swap out. Where are you paying $800 for a brake job!!! Holy crap! If you have a 4- wheel disc system, the job is cake. Check out the cost of replacement rotors at a local parts store (not the dealer!) if resurfacing is needed to compare costs. Never bought rotors for my Hondas, but my Ford replacement rotors were $13 each.
Here's a hint: Do one side at a time...if you forget where a part goes, check the other side.
Disc brakes are cake. Drum adjustments (bearing torque, initial brake adjustment) are a little tricky.
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