Endless squeaky brakes

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  • 1887
    XSive
    • May 2015
    • 91
    • Ottawa, Ontario, Canada

    #1

    Endless squeaky brakes

    I have a 1980 Standard, I completely rebuilt the front brakes (new master cylinder kit, new brake lines, new pistons & seals, everything thoroughly cleaned), I did not replace the pads because they had tons of life left. I cleaned them with brake clean, I also cleaned the ss pad slider surfaces. I used brake grease on the back of the pads, put er all back together and it was a thing of beauty - brakes were perfect...until...A week later it started to squeak during low pressure stops - it would go away if I got on the brakes harder. So, I took er all apart , cleaned off the brake lube, sprayed the pads, reapplied brake grease (a bit more this time) and it was fine....for a week. The squeak came back.

    I only put grease on where the back of the pads touch the piston & caliper claw. Am I doing something wrong? It is annoying and my dog is starting to hate me.
    1980 G
    Jardine Spaghetti

    http://s1337.photobucket.com/user/Ug...ish/slideshow/
  • 1887
    XSive
    • May 2015
    • 91
    • Ottawa, Ontario, Canada

    #2
    I should add: The pads that are currently on the bike are SBS however I am unaware of the model (organic or sintered). Could this be a factor?
    1980 G
    Jardine Spaghetti

    http://s1337.photobucket.com/user/Ug...ish/slideshow/

    Comment

    • DAVINCI
      XS-XJ Guru
      • Jan 2011
      • 1048
      • Cedar Mountain, NC

      #3
      Chamfer the leading edge of each pad with a file, it worked for me.
      Former owner, but I have NO PARTS LEFT!

      Comment

      • 1887
        XSive
        • May 2015
        • 91
        • Ottawa, Ontario, Canada

        #4
        actually i already did that because the edges had a bit of scaling/flaking
        1980 G
        Jardine Spaghetti

        http://s1337.photobucket.com/user/Ug...ish/slideshow/

        Comment

        • BowlingSS
          XStremely XSive
          • Apr 2015
          • 398
          • Lawrenceville, GA.

          #5
          I would replace the pads.

          Bill
          1980 XS1100 SG
          Jardine Spaghetti with Harley Mufflers

          Comment

          • crazy steve
            XS-XJ Guru MODERATOR
            • Jan 2009
            • 7932
            • Beautiful outer Yelm, WA

            #6
            If the pads don't already have one, cut a slot in each with a hacksaw. Don't go full depth, put it in the middle of the pad top-to-bottom. The OEM pads have this slot. You can also try a scotchbrite pad on the rotor surface to 'break' the glaze.

            But some pads will squeak because of the material....
            Fast, Cheap, Reliable... Pick any two

            '78E original owner - resto project
            '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
            '82 XJ rebuild project
            '80SG restified, red SOLD
            '79F parts...
            '81H more parts...

            Other current bikes:
            '93 XL1200 Anniversary Sportster 85RWHP
            '86 XL883/1200 Chopper
            '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
            Cage: '13 Mustang GT/CS with a few 'custom' touches
            Yep, can't leave nuthin' alone...

            Comment

            • 1887
              XSive
              • May 2015
              • 91
              • Ottawa, Ontario, Canada

              #7
              The pads already have a slot in them (top to bottom), should I put another slot in?
              1980 G
              Jardine Spaghetti

              http://s1337.photobucket.com/user/Ug...ish/slideshow/

              Comment

              • bikerphil
                Master of XSology
                • Jan 2008
                • 8634
                • South Flori-DUH

                #8
                Originally posted by DAVINCI
                Chamfer the leading edge of each pad with a file, it worked for me.
                +1 this has worked for me too except I used a grinding wheel, much faster.
                2H7 (79) owned since '89
                3H3 owned since '06

                "If it ain't broke, modify it"

                Comment

                • DAVINCI
                  XS-XJ Guru
                  • Jan 2011
                  • 1048
                  • Cedar Mountain, NC

                  #9
                  @ 1887:

                  No, not a slot, a chamfer. At the leading edge, (lowest as the pads are installed) file an angle on the pad material

                  Former owner, but I have NO PARTS LEFT!

                  Comment

                  • MPittma100
                    XS-XJ Guru
                    • Aug 2011
                    • 2359
                    • Atlanta, GA.

                    #10
                    Brake Quiet

                    An item sold in auto parts store - should stop the noise. It is red in color. Comes in liquid or spray application. Cheap fix. Apply to back of pads, let dry, reinstall pads.
                    1981 XS1100H Venturer
                    K&N Air Filter
                    ACCT
                    Custom Paint by Deitz
                    Geezer Rectifier/Regulator
                    Chacal Stainless Steel Braided Brake Lines
                    Chrome Front Rotor & Caliper Covers
                    Stebel Nautilus Horn
                    EBC Front Rotors
                    Limie Accent Moves On In 2015

                    Mike

                    Comment

                    • 1887
                      XSive
                      • May 2015
                      • 91
                      • Ottawa, Ontario, Canada

                      #11
                      I beveled the edges of the pads last night with a bench grinder. I smeared "disc quiet" on the back of the pads, let it sit and reassembled them. I haven't ridden it yet, I will be going for a ride tonight to test it.
                      1980 G
                      Jardine Spaghetti

                      http://s1337.photobucket.com/user/Ug...ish/slideshow/

                      Comment

                      • 1887
                        XSive
                        • May 2015
                        • 91
                        • Ottawa, Ontario, Canada

                        #12
                        Squeak is gone! Hooray
                        1980 G
                        Jardine Spaghetti

                        http://s1337.photobucket.com/user/Ug...ish/slideshow/

                        Comment

                        • BowlingSS
                          XStremely XSive
                          • Apr 2015
                          • 398
                          • Lawrenceville, GA.

                          #13
                          Originally posted by 1887
                          Squeak is gone! Hooray
                          Hope it stays gone.

                          Bill
                          1980 XS1100 SG
                          Jardine Spaghetti with Harley Mufflers

                          Comment

                          • 1887
                            XSive
                            • May 2015
                            • 91
                            • Ottawa, Ontario, Canada

                            #14
                            ARGH - the damn squeak came back? That high pitch noise is driving me nuts, I find myself not using any light application of the brakes to avoid that trailer trash sound. I slam on the brakes at the last minute; no more trail braking!
                            1980 G
                            Jardine Spaghetti

                            http://s1337.photobucket.com/user/Ug...ish/slideshow/

                            Comment

                            • bikerphil
                              Master of XSology
                              • Jan 2008
                              • 8634
                              • South Flori-DUH

                              #15
                              Might have to scuff the glaze off the rotors with some 80 grit, easy to do with the rotors off the bike, not so easy otherwise.
                              2H7 (79) owned since '89
                              3H3 owned since '06

                              "If it ain't broke, modify it"

                              Comment

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