Quantcast

Oiled disc pads now they slip

Discussion in 'The Shop' started by wyrd, Jul 28, 2008.

  1. wyrd

    wyrd Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Jul 28, 2008
    Messages:
    6
    My front disc brake was squeeky so I put a drop of oil between the disc brake pads... Now the brake has lost all it's stopping power, even after I have wiped the pads down. I read on another forum that the oil will soak into the pads and they will have to be replaced. Before I go jetting off into the unknown again and fork out for something I don't need, will I need new pads or can I give them a dose of WD40 or something?
     
    #1 -   Jul 28, 2008
    Last edited: Jul 28, 2008

    Please register to disable this ad.

  2. sanjuro

    sanjuro Tube Smuggler

    Rep/Likes:
    7 / 0
    Joined:
    Sep 13, 2004
    Messages:
    17,412
    Location:
    SF
    you can try filing them down, but don't ever add oil to your brakes.

    replace your pads, straighten your rotor or reposition your caliper. that the only 3 things you should do to adjust your disc brakes (and bleed them).
     
    #2 -   Jul 28, 2008
    Last edited: Jul 28, 2008
  3. wyrd

    wyrd Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Jul 28, 2008
    Messages:
    6
    Thanks. Filing them down is worth a try if they are knackered anyway. Sounds like a job for a grinding stone bit on my dremel wondertoy.
     
    #3 -   Jul 28, 2008
    Last edited: Jul 28, 2008
  4. jsh191

    jsh191 Monkey

    Rep/Likes:
    0 / 0
    Joined:
    Nov 16, 2006
    Messages:
    110
    Location:
    birdsboro, pa
    oil + brakes don't mix.... but, you hopefully already realize that. buying new pads will be the easiest fix...not the cheapest, but definitely the easiest. and, keep the lubes away from the brakes....:bonk:
     
  5. primo661

    primo661 Monkey

    Rep/Likes:
    0 / 0
    Joined:
    Jun 16, 2008
    Messages:
    412
    Location:
    Pietermaritzburg, South Africa
    i've found if you put them over a gas burner and burn all the oil off the pad, worked for me.
     
  6. wyrd

    wyrd Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Jul 28, 2008
    Messages:
    6
    Filing and burning seem to have made a definite improvement but I will have to ride it a few times and do some more filing and burning yet to make sure. I can always order some new pads if they are still slippy.
     
    #6 -   Jul 28, 2008
    Last edited: Jul 28, 2008
  7. ultraNoob

    ultraNoob Yoshinoya Destroyer

    Rep/Likes:
    0 / 1
    Joined:
    Jan 20, 2007
    Messages:
    4,515
    Location:
    Hills of Paradise
    When I accidently spill some brake fluid on the pads, I usually spray on some "brake parts cleaner". Followed by a good torching with a lighter. Make sure to clean the rotor as well. Pay special attention to the vent holes as you may have some oil lurking there. Even a little bit of oil will cause braking problems. Good luck and welcome to Ridemonkey.
     
  8. H8R

    H8R Cranky Pants

    Rep/Likes:
    7 / 4
    Joined:
    Nov 10, 2004
    Messages:
    13,965
    Welcome to the most wonderful place on the internet.



    Replace the pads. They are toast. Once the lube gets in it's VERY hard to get rid of it. The pad material soaks it up like a sponge.

    Take off the rotor, drop it in pan shallow pan of 99% pure rubbing alcohol and set it on fire. Then wipe it down with alcohol again after it cools. Use a grease/oil free cloth.

    Keep lube away from pads/rotors - always. This was probably the reason they were squealing to being with.
     
  9. fed tom

    fed tom Chimp

    Rep/Likes:
    5 / 0
    Joined:
    Jun 23, 2008
    Messages:
    52
    Location:
    leeds
    why the hell would you oil pads?
     
  10. builder666

    builder666 Monkey

    Rep/Likes:
    8 / 0
    Joined:
    Dec 13, 2002
    Messages:
    212
    Location:
    Construction in Subterfuge
    Good tip to reduce disc brake noise... Next time you replace your brake pads try this.

    1. Remove old pads.
    2. Clean caliper assembly and rotor thoroughly with isopropyl, rubbing, alcohol and let dry.
    3. File 45 degree chamfer on the leading edge of the new pads. DO NOT take off more than half of the thickness of the braking material.
    4. When you have the wheel back in place, loosen the vertical bolts attaching the caliper assembly to the adapter so you can wiggle the caliper side to side.
    5. Use two business cards as spacers between the new pads and the rotor and apply the brake, squeeze the lever a couple of times.
    6. Tighten the bolts and remove business cards.

    This works for me.

    P.S. I keep isopropyl alcohol in a spray bottle as it comes in handy for just these occasions.
     
    #10 -   Jul 28, 2008
    Last edited: Jul 28, 2008
  11. FR4life.

    FR4life. Monkey

    Rep/Likes:
    4 / 0
    Joined:
    Nov 2, 2004
    Messages:
    608
    Location:
    The Bay
    Hahaha. At one point the brakes on my bmx were terrible, and someone told me to pour coke on my rim. Works like a charm! They do get a little noisy from time to time though.. :brow:
     
  12. fed tom

    fed tom Chimp

    Rep/Likes:
    5 / 0
    Joined:
    Jun 23, 2008
    Messages:
    52
    Location:
    leeds
    lucozade original is better for that mallard like squeel ;)
     
  13. H8R

    H8R Cranky Pants

    Rep/Likes:
    7 / 4
    Joined:
    Nov 10, 2004
    Messages:
    13,965
    Note:

    Don't use the 70% or less rubbing alcohol they sell at the drug store. Use the 99% pure stuff.

    The other dilutions have mineral oil and other crap added to them. Get the pure stuff.
     
  14. builder666

    builder666 Monkey

    Rep/Likes:
    8 / 0
    Joined:
    Dec 13, 2002
    Messages:
    212
    Location:
    Construction in Subterfuge
    True. Thanks

     
  15. El-Pinto

    El-Pinto Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Aug 11, 2008
    Messages:
    4
    Location:
    Winkler, MB
    I've heard that using a propane torch on the brake pads would burn off any oil residue in the pads.

    I just came over from Pink bike, it feels good to be here, no clutter, I can actually read posts, and the information is thorough. I'm glad I found you guys.

    Hope I helped.
     
  16. ThePriceSeliger

    ThePriceSeliger Mushhead

    Rep/Likes:
    5 / 0
    Joined:
    Mar 31, 2004
    Messages:
    4,861
    Location:
    Denver, Colorado
    The stuff I have been using is 73% and seems to work well. Where can I find the 99% alcohol? Is it available at normal stores? I've never seen it.
     
  17. builder666

    builder666 Monkey

    Rep/Likes:
    8 / 0
    Joined:
    Dec 13, 2002
    Messages:
    212
    Location:
    Construction in Subterfuge
    Medical supply stores are a good resource. Your local drug store should have 91% in stock, which is still better.

    The most important thing to do is remove the pads (don't spray alcohol of any type on them) before spraying and afterward to dry thoroughly (I use my air compressor to dry the nook and crannies).
     
  18. dhpete93

    dhpete93 Chimp

    Rep/Likes:
    5 / 0
    Joined:
    May 24, 2008
    Messages:
    20
    Location:
    UK
  19. NorseManiac

    NorseManiac Monkey

    Rep/Likes:
    0 / 0
    Joined:
    Mar 15, 2006
    Messages:
    492
    Location:
    The North Shore, MA
    I always heard about a thread with this title but thought it was a myth. I guess the bigfoot one is real too.
     
  20. builder666

    builder666 Monkey

    Rep/Likes:
    8 / 0
    Joined:
    Dec 13, 2002
    Messages:
    212
    Location:
    Construction in Subterfuge
    Personally, I ONLY use alcohol (no fire required) to clean the rotors and caliper assembly, and NEVER use anything on the pads themselves.

    If you get any oil on the pads themselves toss them (they are done), clean everything and start over. Alcohol does the job and is much more affordable.
     
  21. Secret Squirrel

    Secret Squirrel There is no Justice!

    Rep/Likes:
    5 / 0
    Joined:
    Dec 21, 2004
    Messages:
    8,154
    Location:
    Up sh*t creek, without a paddle
    Every time I'm drinking a beer or a bottle of vodka in my garage, I always spill a little on my brakes. Keeps 'em clean. This is more my style of maintenance and my not work for everyone.
     
  22. ultraNoob

    ultraNoob Yoshinoya Destroyer

    Rep/Likes:
    0 / 1
    Joined:
    Jan 20, 2007
    Messages:
    4,515
    Location:
    Hills of Paradise
    Admitt it, that's just you spillin a bit for your fallen homies.
     
  23. silentfoe

    silentfoe Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Sep 6, 2008
    Messages:
    7
    Location:
    Utah Valley
    Isopropyl alchohol soak and then bake in the oven at 350 degrees for an hour, total oil purge and it works.
     
  24. aphex2k

    aphex2k Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Sep 7, 2008
    Messages:
    19
    Yep you can clean oil off pads with a blowtorch or heat gun. Not ideal I know, but it works.

    Pure Acetone or IPA (Isopropyl Alcohol) will clean them too and I've had good success with Fenwicks disc brake cleaner (similar the the Muc-Off variety)
     
  25. w00dy

    w00dy In heaven there is no beer

    Rep/Likes:
    6 / 27
    Joined:
    Jun 18, 2004
    Messages:
    3,417
    Location:
    that's why we drink it here
    I saved a bunch of oily pads this summer.
    Stuck them in a cup of gasoline, let them sit, then lit the gas and let it burn out.
     
  26. gemini2k

    gemini2k Turbo Monkey

    Rep/Likes:
    10 / 114
    Joined:
    Jul 31, 2005
    Messages:
    3,523
    Location:
    San Francisco
    Acetone leaves a film on the pads. If you're going to soak in acetone, make sure to rinse in iso afterwards.