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Adjusting brake drums to eliminate pull #2313797
05/30/17 07:56 PM
05/30/17 07:56 PM
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Cincinnati,Ohio
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jcastle1 Offline OP
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So, recently my car has developed an extreme hard pull to the right when braking. I'm still on the large front drums for the road runner.
(that's on the upgrade list for next year, discs)
So I noticed that the strut rod bushings were shot and removed the torsion bars and installed new Moog problem solver upgrades today. Same issue.
So now i am back to looking at the brake adjustment or possible brake hoses.
Oh, BTW- after the immmediate hard pull to the right it tends to straighten up.
Rest of the suspension is tight.

Ideas?

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2313805
05/30/17 08:13 PM
05/30/17 08:13 PM
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Lincoln Nebraska
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RapidRobert Offline
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A pull to the right means the left side ain't doing its job (for whatever reason). open it up & see what's up.


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Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2313806
05/30/17 08:15 PM
05/30/17 08:15 PM
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northern,Ohio,USA
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Clanton Offline
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Maybe it makes contact before the other side.sticking parts.


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Re: Adjusting brake drums to eliminate pull [Re: Clanton] #2313823
05/30/17 08:32 PM
05/30/17 08:32 PM
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Eagle, Idaho
Neil Online content
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Make sure you have the pads in the right orientation.

Check the brake drum backing plates for wear where the brake pad frames ride. I recently had to weld and smooth the rear backing plates out on my pickup rear brakes to get the pads to move and return smoothly. They can fall into the groves which makes the brakes feel inconsistent and touchy.

Another time I had pads that were glued instead of riveted and the leading edge came unglued from the steel frame. When the brakes came on the loose part of the pad would grab the drum and bunch up which would cause that one brake to apply way too fast. Once that partially unglued pad was swapped out all was good again.

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2313878
05/30/17 10:19 PM
05/30/17 10:19 PM
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Verrrrry South Jersey
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SpeedThrills Offline
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Old backing plates can get notches worn into them where the brake shoes sit against them. The shoes stick in them. I've welded them up and dressed them off with a grinder.

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314174
05/31/17 01:29 PM
05/31/17 01:29 PM
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Bend,OR USA
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Are you using the stock self adjusters still? If so remove both drum and see if one side is looser or tighter than the other on the adjusters scope
Correct as needed up


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Re: Adjusting brake drums to eliminate pull [Re: Cab_Burge] #2314304
05/31/17 08:01 PM
05/31/17 08:01 PM
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Florida
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Could be a bad wheel cylinder not working on the opposite side of pull twocents

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314350
05/31/17 09:37 PM
05/31/17 09:37 PM
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Minn
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SportF Offline
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there is some good suggestions here. Adjustment/tightness on one side or the other will not cause pull. When one side starts to touch, fluid flow will go to the other side and push on that side until it touches. That is the neat thing about hydraulic brakes, equal pressure on both sides.

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314354
05/31/17 09:45 PM
05/31/17 09:45 PM
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Cincinnati,Ohio
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jcastle1 Offline OP
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aligned the car today. adjusted front brakes evenly. let front rear shoe is coming unbonded.
wheel cylinders move freely on both sides.
Brakes hoses are dry rotted on both sides.
these are factory drum brakes with probably all original parts except wheel cylinders.
car is a 69 road runner with a new 440/505 kit , S60 Dr. Diff Dana w/4:10 gears. 4*speed.
Can someone look at this part number from Mancini Racing and let me know if it will stop the car good? If I'm gnna convert to fron disc, I want to make sure this kit will get the job done!
BTW- Manual brakes,too

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314359
05/31/17 09:55 PM
05/31/17 09:55 PM
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gulfport, ms, west mi
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Believe it or not, theres a lot of 50 year old cars driving around with original brake hoses. Last year I had my rear brakes starting to drag, replaced both rear wheel cylinders , both were filled with crud. Resembled , the problem was worse. It was the rear hose . The line acted like a check valve, a lot of hydraulic brake going in ,nothing coming back. I bet it's your rubber hose.


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Re: Adjusting brake drums to eliminate pull [Re: rowin4] #2314360
05/31/17 09:59 PM
05/31/17 09:59 PM
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Cincinnati,Ohio
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jcastle1 Offline OP
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i replaced the rear hoses when I did the S60 Dana upgrade

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314431
06/01/17 12:32 AM
06/01/17 12:32 AM
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Lincoln Nebraska
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RapidRobert Offline
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I would get the drum setup straightened out first. I would replace the bad/unbonded shoe (if I am reading that right) then spoon em up tight then back off the other way till free & you hear a slight "tick" of contact at one point in the tires' revolution as you spin the wheel(s) forward by hand.


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Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314445
06/01/17 01:12 AM
06/01/17 01:12 AM
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gulfport, ms, west mi
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But did you replace the front ones also at that time or do you know if they have been ever replaced?


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Re: Adjusting brake drums to eliminate pull [Re: rowin4] #2314462
06/01/17 04:49 AM
06/01/17 04:49 AM
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Chicago Burbs
sthemi Offline
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Got the same exact problem with my 68 RT Charger, only it pulls left.
just bought two wheel cyls and new hoses from rock auto.

Pretty sure factory lines and wheel cylinders are still on the car.

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314485
06/01/17 09:16 AM
06/01/17 09:16 AM
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Cincinnati,Ohio
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jcastle1 Offline OP
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front hoses are original,

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2314613
06/01/17 02:09 PM
06/01/17 02:09 PM
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Northern Calyfornua
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There is s good chance that if brake lining is not replaced pull will still exist if ever contaminated. . Once lining has been soaked with grease or brake fluid, it is likely you will be unable to clean throughly. Such compromised lining can/will often cause a severe pulling,,,,drums too must be throughly cleaned with carb or some such cleaner.

Be very careful when installing shoes and other components, so as greasy hands do not re-contaminate surfaces.

I learned a very long time ago not to blow compressed air to clean brakes after pulling drums. Vacuuming is advisable to start with for lung safety and not causing a general mess of your environment. Finish up with air but wear a nose mask and eye protection.

Not as critical as when asbestos was standard lining material, advisable nonetheless.

Re: Adjusting brake drums to eliminate pull [Re: Sxrxrnr] #2314624
06/01/17 02:29 PM
06/01/17 02:29 PM
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Ball Ground, Georgia
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Originally Posted By Sxrxrnr
There is s good chance that if brake lining is not replaced pull will still exist if ever contaminated. . Once lining has been soaked with grease or brake fluid, it is likely you will be unable to clean throughly. Such compromised lining can/will often cause a severe pulling,,,,drums too must be throughly cleaned with carb or some such cleaner.

Be very careful when installing shoes and other components, so as greasy hands do not re-contaminate surfaces.

I learned a very long time ago not to blow compressed air to clean brakes after pulling drums. Vacuuming is advisable to start with for lung safety and not causing a general mess of your environment. Finish up with air but wear a nose mask and eye protection.

Not as critical as when asbestos was standard lining material, advisable nonetheless.


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Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2315339
06/02/17 09:03 PM
06/02/17 09:03 PM
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Cincinnati,Ohio
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jcastle1 Offline OP
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t's a brake hose!
finally gonna upgrade to a front disc setup.
I see mancini racing sells a kit made by MBM. Anyone use or heard of them?

Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2315406
06/02/17 11:41 PM
06/02/17 11:41 PM
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Chilliwack B.C. Canada
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I would call Dr. Diff, he is a member here and will look after you.


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Re: Adjusting brake drums to eliminate pull [Re: jcastle1] #2317327
06/06/17 08:35 PM
06/06/17 08:35 PM
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Cincinnati,Ohio
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jcastle1 Offline OP
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Thanks for the advice, i just ordered my kit from Dr. Diff.
Incidentally, that's where i bought my S-60 Dana as well as my driveshaft from.
What a great guy to deal with, a real pro at customer service (answers the phone, patient with my stupid questions, HONEST) a real asset to the hobby.
I shopped it around and there are cheaper kits out there, and he did not dog any of them, simply explained the differences. If anyone is looking for a disc brake upgrade, don't waste your time looking around; I already did the homework.

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