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brakes 60 cj5

Discussion in 'Early CJ5 and CJ6 Tech' started by markyt, Mar 19, 2011.

  1. Mar 19, 2011
    markyt

    markyt New Member

    Joined:
    May 25, 2010
    Messages:
    37
    Hi
    getting ready to work on the brakes;stock 9"; will be replacing the MC,and honing the wheel cyl's (hav kits 4 wc's) yes,I should repl all with new,but I just don't hav the cash . I've not done this b4;can anyone give me some pointers? Any tips on removal on mc;honing wc. Hav heard,need to clean with denatured alcohol;where do I purchace it? Also,should I take off all lines one by one,and run alcohol thru them and blow out?Thanks:flag:
     
    markyt, Mar 19, 2011
    #1
  2. Mar 19, 2011
    Jim302

    Jim302 Banned

    Morrisville PA
    Joined:
    Jan 4, 2011
    Messages:
    71
    If this is your first time honing wheel cylinders, I recomend removing then and doing them in a vise.

    It is not that complicated. Just put them back together the way they came apart after a thorough cleaning. If tooling is required to get the seal in right, wire wheel or sand all sharp edges off the tool first.

    I have only flushed brake lines with brake fluid.
     
    Jim302, Mar 19, 2011
    #2
  3. Mar 19, 2011
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    I don't rebuild wheel cylinders any more because the chance of the bores being pitted is very high with an old vehicle. If you find pitted bores, bite the bullet and get new cylinders because pits=leaks.

    The vise idea is a good one, and use lots of brake fluid as a lubricant and to carry off the metal bits from the honing process. I prefer a "bottle brush-type" hone as compared to a "stone-type" hone because they are easier to handle and produce good results.

    While you have the wheel cylinders out and on the bench, try to get the bleeders free and make sure that you get all the crud out of the passages. Pipe cleaners can be a big help here, as can compressed air.

    You probably already know this, but brake fluid is VERY corrosive and it will eat paint off anything. Try to limit how much you get on your hands (it burns) and try to recover what you can in a jar or somesuch during the honing process. You'll find that you track this stuff EVERYWHERE.

    Best of luck to you!
     
    w3srl, Mar 19, 2011
    #3
  4. Mar 19, 2011
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    I'd recommend removing the bleeder valves before trying to rebuild. If they won't come loose no sense in going further
    Posted via Mobile Device
     
    nickmil, Mar 19, 2011
    #4
  5. Mar 19, 2011
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Aug 10, 2003
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    23,596
    You can buy denatured alcohol from in a metal can from a hardware store or home center ... it's with the paint thinner. I was taught to use alcohol as a cleaner for brake parts - you want something that won't attack brake rubber and that isn't oily.

    Use brake fluid to lubricate the hone. When finished, clean everything with alcohol to remove any grit that might be left behind. Lubricate the rubbers with a little brake fluid to assemble.
     
    timgr, Mar 19, 2011
    #5
  6. Mar 20, 2011
    markyt

    markyt New Member

    Joined:
    May 25, 2010
    Messages:
    37
    Thanks all 4 the advise;I was able 2 afford a new mc;I don't hav a vise,so will try 2 clean/hone wc's still mounted 2 bckng plates.Got some alcohol from Hm Dpt,still hav 2 pu xtra brk fluid 4 lubng ,fillng mc and bleedng.
     
    markyt, Mar 20, 2011
    #6
  7. Mar 20, 2011
    windyhill

    windyhill Sponsor

    PA
    Joined:
    Nov 4, 2006
    Messages:
    1,502
    Save up and buy new ones. Brakes aren't worth being cheap about!!! Chances are like Nick said the bleeders are going to be rusted in. In the long run you'll be way ahead.
     
    windyhill, Mar 20, 2011
    #7
  8. Mar 25, 2011
    65CJ5

    65CJ5 Member

    Albuquerque
    Joined:
    Sep 22, 2002
    Messages:
    156
    Might be a good time to look at moving up to 11" brakes. I had the original 9" and even when they were redone they weren't that great. The 11" brakes are like having power brakes on there!
     
    65CJ5, Mar 25, 2011
    #8
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