Another Rear Drum Dragging Thread

Brakes, Suspension, Rims and Tires

  1. 62dodge

    62dodge Active Member

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    Last I heard that there is a place in Portland Ore. that still trues brake shoes which is a must on the old style shoes, 62 and older. Unless you want your car to pull left or right. When i get close on my 58,62 than i will send the drums and shoes away to have them trued.
     
  2. rkrochen

    rkrochen Well-Known Member

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    Man this is making me feel old now, I distinctly remember this being done. Looking at the pics I do believe it would be worth taking the shoes off and fitting them into the drum to see how well they fit.
     
  3. stain

    stain New Member

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    I will be taking mine apart and checking the shoe fit this week. I will take some pictures. Unfortunately I threw my originals out.
    A vendor told me that to run rear disc, I need to upgrade to power brakes. So that plan is on hold.
    I turned my own drums myself at work. We don't have a shoe fitment tool, but I have a belt sander that with some finesse I believe will work.
     
  4. 300cruiser

    300cruiser Active Member FCBO Gold Member

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    Thanks Pauly - I ordered new rubber hose, distribution block, rear lines, and new brake cylinder, not leaving anything to chance. I hope to swap everything this weekend and test.
    Before I dig in, is there any science to mounting the d-block on rear end valve or does it just sit on on it? And how tight do you torque the d-block to the rubber flex, I don't see may references in my manual.
    Thanks.
     
  5. 300cruiser

    300cruiser Active Member FCBO Gold Member

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    Hi John,
    I haven't investigated the master yet since the issue seems isolated to right side only. Working backwards from the right side towards the master, if my current changes don't correct the issue then I will look to the master next. After that...not sure.
    Thanks,
     
  6. 300cruiser

    300cruiser Active Member FCBO Gold Member

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    Awesome videos. Thank you!
     
  7. barnfind

    barnfind Senior Member

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    Did some research on this, could be made from simple stock iron as these seem to bring $$$ on ebay. Ammco 1750 used on 20s dodge / plymouth brakes to dial them in. Nothing on you tube about these that I found, or the truing machine.
    Brake-05.jpg 1_02e095f62afb189642d36e2915467602.jpg
     
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  8. stain

    stain New Member

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    I did not get to remove my brakes this weekend. I was installing a new metering block. I did readjust the brakes, backed them off more than spec, same story.
    Here is the thing that is getting me confused. The rear brakes gets super hot yet they are not sticking. The right drum is approaching 380 degrees after 10 miles of 50 MPH driving. The left drum @225. When I go for a test drive I get out to measure the drum tempetures and can easily roll the car in neutral. The brakes are not stuck on. There is no sign of drag or scraping when turning the rear wheels while in the air.
    What am I missing?
     
  9. mr. fix it

    mr. fix it Old Man with a Hat

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    Have you ever spilled brake fluid or diff oil on the one set of shoes?

    I am presuming that all shoes came from the same box right?
    Did you confirm that the front shoe is shorter than the rear shoe on each side?
    Have you checked the rear steel brake lines for one being pinched?
    I recall Mike Madden finding out that he had both secondary shoes on one side & both primary shoes on the other.
     
  10. 1970cat

    1970cat Senior Member FCBO Gold Member

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    brake shoe grinder
    s-l1000.jpg
    maxresdefault.jpg
     
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  11. rkrochen

    rkrochen Well-Known Member

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  12. stain

    stain New Member

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    Have you ever spilled brake fluid or diff oil on the one set of shoes?---no

    I am presuming that all shoes came from the same box right?----correct
    Did you confirm that the front shoe is shorter than the rear shoe on each side?----yes
    Have you checked the rear steel brake lines for one being pinched?yes, but wouldn't that keep the brakes on? The car seem to roll easily. Maybe slow to return?
    I recall Mike Madden finding out that he had both secondary shoes on one side & both primary shoes on the other.
     
  13. mr. fix it

    mr. fix it Old Man with a Hat

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    Thanks for confirming the above.(I know that there's been tons of replies to this trying to help)
    The brake line if pinched but not blocked off totally may result in a slow to release shoes. - I know this is now at the point of grasping at straws here which is why I asked about the lines...
    Are they original?
     
  14. mr. fix it

    mr. fix it Old Man with a Hat

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    Also, axle bearing are good as well right?
    No side to side slop...
     
  15. stain

    stain New Member

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    They seem to be . I will double check. They are not making any noise. If the bearing had side play, would I see marks from the drum on the backing plate? Or marks on the drum from the edges of the shoes?
     
  16. mr. fix it

    mr. fix it Old Man with a Hat

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    It’s hard to say for sure
    Right now you should be reviewing everything else that you can think about
     
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  17. 300cruiser

    300cruiser Active Member FCBO Gold Member

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    Update: over the weekend I replaced the flex line, axle tee, and rear brake lines...and no improvement.
    Next step is replacing the Master. Looking at all options, I came across a thread about the Hydraulic Safety Switch / Proportioning Valve (I don’t know have to copy link from older threads) and can’t help wondering if that has something to do with restricting the pressure release. Has anyone experienced issues in the past? They seem somewhat difficult to find replacements. Are they easily rebuilt?
     
  18. Ripinator

    Ripinator Senior Member

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    old lady eating popcorn.jpg
     
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  19. MrMoparCHP

    MrMoparCHP Senior Member

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    I had the same issue, replaced the bearings, problem continued, replaced the axle housing, problem solved.
    The housing was worn where the bearings make contact.


    Alan
     
  20. stain

    stain New Member

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    So the axle was moving while under the weight of the car causing the shoes to contact the drums?