This is a discussion on brakes within the Technical forums, part of the Forums category; I have just bought a 74 cb 750. I think its a k4. my front brakes squeal, and pop, when rolling at low speed. I ...

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Thread: brakes

  1. #1
    Jason Lednum's Avatar
    Join Date
    Nov 2008


    I have just bought a 74 cb 750. I think its a k4. my front brakes squeal, and pop, when rolling at low speed. I suppose they do the same at high speed, but I cant hear it then.
    The last owner had ground down the center of the inner pad, (the one with the post sticking out of it)and i assume he was trying to flatten the center, in order to keep the pad from making these noises. Regardless, the pad still wobbles around after it is pinned in.
    Can someone tell me if these are the right pads? or were they the right pads before this grinding. The guy said they always did this even before he "modified" them. I have tried to flatten the pad a little more, but as soon as I apply pressure, the popping, and squealing begins again. PLEASE HELP ME!!!!!!

  2. #2
    Senior Member bmartin's Avatar
    Join Date
    Feb 2008
    Palmyra, NY, USA.
    It's a good chance the puck section of your brakes are not retracting like they should, which may require a rebuild kit. On the back of the pin of the non moving section of the brake - try adding a washer to keep the pad from being too loose.

    Your last option is to grease the pad....I'm kidding about that
    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

  3. #3
    Senior Member oneworden's Avatar
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    Jul 2008
    franklin, WI, USA.
    well this is the K4 set up, i would say they are just old and worn out. a set of Parts Unlimited branded pads shouldn't run you $20. worst case just take them back.

    Did you hear about the pirate with two wooden legs?

    They caught fire and burned his ass to the ground!

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  5. #4
    Senior Member kenessex's Avatar
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    Oct 2005
    Galena, AK, USA.
    Fill out your Bio, It helps. If you don't, Texy will make you cry.

    WERA 119
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    \"Think twice before you speak, and then you may be able to say something more insulting than if you spoke right out at once.\"
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    Newbies, Geeto and Tex (Bye Tex)hate me!!

  6. #5
    Jason Lednum's Avatar
    Join Date
    Nov 2008
    Thanks guys, my mechanicing is ...marginal.. at best. Your help is greatly appreciated.
    Now,,, can anyone sell me a cb900c rear rotor? The part costs as much as the bike!

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