I'm not even going to try and complain anymore... I'm just a drum brake moron. - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-22-2004, 06:28 PM
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Angry I'm not even going to try and complain anymore... I'm just a drum brake moron.

The saga continues. Any advice would be gratefully received. So anyway, I just got done putting my brakes together on the jeep... finally (see difficulty removing drums thread) and they do work the way they're supposed to, the car stops and better than it did before I might add......................... BUT- THe thing feels like its going to shake itself apart when I brake anything more than lightly at any speed more than about 20 miles per hour. WTF? lol I can't do a set of drum brakes to save my life. ITs obvious that something is chattering around in the drum somewhere, I can't figure out what it is, because everything is new and lubed, and (to the best of my knowledge, checked several times and looks correct...) is assembled by the book. What gives?!

THanks in advance. I obviously need a brake education or something.

K

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Old 05-22-2004, 07:25 PM
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they're new drums aren't they?
did you use new hardware?

have you pulled the drums back off to see if everything is riding correctly?

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Old 05-22-2004, 09:01 PM
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Good q larry. Yup, all new hardware, even all new adjusters, new cables for the self adjusters, new springs, shoes. New drums. How should it ride? I adjusted the wheel to where the shoes just drag on the drum, then stuck it on. Anything I should be looking for specifically?

K
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Old 05-22-2004, 09:13 PM
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if it were me, i'd say the damn parts place probably sold me the wrong parts. happens to me all the fn time.....

as long as nothing looks like it could bind up it 'should' be ok. can you get some one to step on the brake after you've given the wheel a spin, to see what's actuating?..... i think the drums aren't seating against the pads well..... actually just the opposite of that....


have you checked out the tech section at the mpb

website?


lots of great info....
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Old 05-22-2004, 09:54 PM
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Are the shoes on correctly? Is the shoe with the longer pad, at the back of the vehicle?
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Old 05-22-2004, 10:34 PM
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yup, longer pad to the back, adjusting lever cable running along the back shoe, adjusting wheel engaging the adjusting lever...


K
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Old 05-22-2004, 11:12 PM
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It sounds like one or more of your new drums are out of round if the shaking occurs only when you apply the brake, and your front wheel bearings are tight. Try this, get the car up to about 50 mph on the street and very lightly apply the brake, gradually giving it more and more pressure. If you sense a thump, thump, thump, before the shoes fully engages the drum, one or more of the drums is out of round.
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Old 05-23-2004, 07:21 AM
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Sounds like you have done the brake job correctly. Since this is a 4WD and you had to remove the lock out hub mechanism to get at the front brakes, I would go back and check the hub assembly and make sure the wheel bearings have the correct adjustment, If they are loose or worked loose because the locking mechanism was not installed correctly, you will get big time vibes during braking. Can be felt thru steering wheell. Been there; done that.

Trees
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Old 05-23-2004, 09:04 AM
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I remember on the drum brakes I had, ones with self adjusters, I had to drive backwards and slam on the brakes. My dad said it set the shoes to the drums.

Dutch
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Old 05-23-2004, 09:47 AM
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Quote:
Originally posted by trees
Sounds like you have done the brake job correctly. Since this is a 4WD and you had to remove the lock out hub mechanism to get at the front brakes, I would go back and check the hub assembly and make sure the wheel bearings have the correct adjustment, If they are loose or worked loose because the locking mechanism was not installed correctly, you will get big time vibes during braking. Can be felt thru steering wheell. Been there; done that.

Trees
I agree with Trees! This is where I would look first.
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Old 05-23-2004, 11:28 AM
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Hmmm. First of all thanks for all the replies. I guess I can see if they're out of round... they shouldn't be!!! They're brand f'n new! As far as the 4wd mechanism is concerned, I'm pretty sure that's not it. I did the front brakes about six months ago, no complaints. I did the first brake last week, took me forever because the drum needed a 15 ton puller to come off, and drove it. Noticed a little vibration with just the first drum done. Opened up the other drum this week, rebuilt all that. As I was using the original drum for reference, I noticed the self adjuster spring was on backwards, and it wasn't engaging the wheel, and the guide bar in the middle had fallen out (!@@!@#??). So I fixed all that, adjusted it correctly, and away I went!!! Vibration like a MF'er.

One thing I can think of is that it isn't seating quite right, and maybe I should wait until it wears in?

I'll try going fast in reverse and slamming the brakes. Sounds like fun even if it doesnt work.

K
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Old 05-23-2004, 03:01 PM
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I had the trembling rear brake problem on a new VW Passat and it was the drums being out of round.Had the wheels balanced four times, in the end VW did it under warranty.
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Old 05-24-2004, 08:59 PM
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try driving at approx 15mph, then applying the park brake slightly. if you can, hold the P. brake release off as well. if the brake handle/pedal pulses or shudders, it's a pretty good indication of out of round drums. btw, what brand of drums did you get? i have run into some brands being made by the cheapest bidder being absolute crap, and being out of round, tapered, bell mouthed.... right out of the box!!! some of these brands did have good word of mouth reps too.
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Old 05-24-2004, 09:24 PM
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on the topic of out of round brakes

I agree i had a bronco that i put new pads and drums on once, the parts store actually sold me out of round brand spanking new drums, i was pissed as you could imagine, so it's not as unlikely as some might think
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Old 05-24-2004, 09:28 PM
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Hey killer, You sure you didn't bend your axle flange when getting that stubborn drum off?...........pretty far fetched, but just a thought.
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