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Technical Scored backing plate, can it be filled in by welding?

Discussion in 'The Hokey Ass Message Board' started by atikovi, Aug 15, 2016.

  1. atikovi
    Joined: Aug 9, 2013
    Posts: 32

    atikovi
    Member

    [​IMG]

    Previous owner knew nothing about replacing brakes as both primary shoes are on one side and secondaries on the other. Now there are deep grooves in the backing plate. Can a noob at welding just fill the grooves with a mig and then grind them smooth?

    Don't want new shoes to end up like these.

    [​IMG]
     
  2. 19Fordy
    Joined: May 17, 2003
    Posts: 8,372

    19Fordy
    Member

    That's an easy fix. Clean it and weld it.
    Then grind down the weld to proper contour.
     
  3. KoolKat-57
    Joined: Feb 22, 2010
    Posts: 3,092

    KoolKat-57
    Member
    from Dublin, OH

    DO NOT USE BRAKE CLEAN to clean the backing plate before welding!
    Brake Clean and welding creates a toxic gas.
    Do a thread search for more information.
    KK
     
    turboroadster likes this.
  4. The 39 guy
    Joined: Nov 5, 2010
    Posts: 3,777

    The 39 guy
    Member

    Yes they are steel and easily repaired.
    IMG_0013R.jpg
    IMG_0014R.jpg
     
  5. atikovi
    Joined: Aug 9, 2013
    Posts: 32

    atikovi
    Member

    I wanted to weld them without removing from the axle, but upon closer inspection, I see almost all 6 pads on both sides are grooved to some extent and the axle seals while not actively leaking do have an ac***ulation of wet grease so I'll have to remove the axles anyway to replace the seals. If so, might as well get some good junkyard plates for under $10 each instead of trying to weld and grind each pad.
     
  6. Your backing plates look like '57 ish 9". Junkyard replacements will have the same wear pattern. Pretty standard for 60 year old backing plates. Look close when you go to the junk yard, yours may be better.
     
  7. Mr48chev
    Joined: Dec 28, 2007
    Posts: 36,046

    Mr48chev
    ALLIANCE MEMBER

    Getting the back in shape isn't as hard as it sounds once you get started on them.

    As the guys said NO brake clean and most likely any you find that fit need work too,
     
  8. atikovi
    Joined: Aug 9, 2013
    Posts: 32

    atikovi
    Member

    '90 Ranger so plenty in junkyard. Got the axles out but the seals wont budge.
     
  9. bobss396
    Joined: Aug 27, 2008
    Posts: 18,754

    bobss396
    Member

    I fixed a couple of them years ago... plastic steel. Held up for many many miles.
     
  10. 49ratfink
    Joined: Feb 8, 2004
    Posts: 25,135

    49ratfink
    Member
    from California

    unless you live next door to the junk yard you could weld and grind those and be done before you even get to the yard. looks like a simple project to me.
     
    Hnstray likes this.
  11. Blue One
    Joined: Feb 6, 2010
    Posts: 11,520

    Blue One
    ALLIANCE MEMBER
    from Alberta

    Used extensively by people who can't weld :D
    Weld them up and grind them down and be done with it a simple fix way easier than trying to find replacements.
     
    Last edited: Aug 15, 2016
    Hnstray and saltracer219 like this.
  12. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Check the price on new backing plates. It may not be worth the bother of sandblasting welding grinding and painting if you can just buy new ones.
     
  13. atikovi
    Joined: Aug 9, 2013
    Posts: 32

    atikovi
    Member

    About $75 each. Would be about what I paid for the truck. Ain't happening.
     
  14. aaggie
    Joined: Nov 21, 2009
    Posts: 2,530

    aaggie
    Member

    I have welded up a lot of them. Ford 9" brake parts are getting scarce and expensive. There are two kinds of spray brake cleaner, buy the one that says non-chlorinated on the label. The residue left by the chlorinated stuff gives off toxic gases when heated by welding. It can kill you.
     
  15. ago
    Joined: Oct 12, 2005
    Posts: 2,198

    ago
    Member
    from pgh. pa.

    Yes
    Only use NON-CHLORINATED brake clean!!
     

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