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Thread: Front brakes locking.
          
   
   

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  1. #31
    Mr Smith's Avatar
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    I am still not getting it LOL. I understand that the inside pad gets pushed by the piston but the outside pad rest against the caliper which is mounted securely to the front spindle. If the caliper doesn't float what could possible push the outside pad into the rotor?
    Mark Smith
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  2. #32
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    The pad that has the cylinder on it is the one that moves the outside one is stationary.
    Charlie
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  3. #33
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    The caliper does slide on those pins! They need to be clean and free of rust or dirt , debris! As the piston extends out , pushing the inner pad against the rotor, it simultaneously provides the clamping force drawing the outer pad against the rotor!
    Last edited by 34_40; 04-12-2011 at 03:52 PM.

  4. #34
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    OK as you apply the brakes the piston moves out. pushing the inside pad into the rotor AT THE SAME TIME the piston is pushing the back of the caliper assembly towards the frame of the car. Thus clamping on the rotor. The outside shoe(PAD) is stationary with the caliper... As the pads wear the cylinder stays out that much along with the inside pad. The caliper moves toward the frame of the car as the pads wear The inside of the pins is attached to the caliper with threads. I realy hope thios helps
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    Charlie
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  5. #35
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    Quote Originally Posted by Louey View Post
    By the way, there is a difference in the MC chambers.
    Got to look outside the box.
    I guess I am going to have to look at that a little closer because if that is the case I have it backwards.

    Mark Smith
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  6. #36
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    Talking

     



    Quote Originally Posted by 34_40 View Post
    The caliper does slide on those pins! They need to be clean and free of rust or dirt , debris! As the piston extends out , pushing the inner pad against the rotor, it simultaneously provides the clamping force drawing the outer pad against the rotor!
    I guess I am not making myself clear I know how they are suppose to work. The problem is that my calipers do not have threads for the bolts to screw into. The threads are in the mounting brackets and so when I tighten down my bolts it secures the calipers to the brackets so they can't slide on the bolts and activate the outer pad. I don't know if you will be able to tell from my pics or not.
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  7. #37
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    Quote Originally Posted by Louey View Post
    Charlie, those pictures are upside down right ? Because it shows the bleeders on the bot. They should be on the top side, right ?
    Yep the bleaders belong on top. I just put that one on to show how they work.. When it goes together the right one will be on the right side and so on.
    Charlie
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  8. #38
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    your setup is correct. I realy don't know how to explain it any different
    Charlie
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  9. #39
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    Do you see the piece of tubing in the ear of the caliper where the bolt goes thru?

    The bolt head tightens that tube against the caliper mount and the caliper has to float on the outside of that tube---it should be free and lubed/anti siezed.

    Charlies calipers are on the wrong side of the car with the bleeder s down---you can see the steering arm in the one pic so it is backwards.

    Also--one end of the m/c looks like dirty rusty fluid

  10. #40
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    Jerry I know the caliper is on the wrong side I just put it there for the pictures didn't think the bleeder was in question.
    Charlie
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  11. #41
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    I'd suggest that you take the pads out of the calipers and mount the calipers and work to get them to slide on the pins---

    push the pistons into the calipers with a c-clamp and reinstall pads and back on car--with the brake lines off you can use a little compressed air to apply the brake and release, do it again and again til you get it free and easy then hook up lines, bleed,etc.

  12. #42
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    sorry charlie, we were typing at the same time---well, I did make a trip outside to look at Robins 33 to see the set up

    actuall gravity bleeding will work that way too

  13. #43
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    Mr Smith ( can we call you Smitty?) do you see those two holes in the floor of your master cylinder????The pedal has to retract the plunger far enough to vent the pressure back into the fluid resouver or your brakes will not release and they will get worse with heat as the fluid boils and expands adding more pressure to the calipers

  14. #44
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    Quote Originally Posted by Louey View Post
    There is a O-ring inside the caliper right where that sleeve is. That sleeve slides on the o_ring. The bolt holds the sleeve to the stationary part, and doesn't move. The caliper slides on the sleeve part.
    Well don't I feel a little stupid right now. I just came in from figuring this out and here you have it all spelled out for me. Again.lol I had a little tunnel vision going on and thought the sleeves in the calipers didn't move. I tightened up the outside pad and cleaned a little paint off the sleeve in the calipers and greased the bolts/pins but it still binds up for some reason. It actually bound up as soon as I tightened it down.The mounting bracket must be a little off square. I will look into it a little more tomorrow. Thank you all for your patience!
    Mark Smith
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  15. #45
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    Quote Originally Posted by jerry clayton View Post
    Mr Smith ( can we call you Smitty?) do you see those two holes in the floor of your master cylinder????The pedal has to retract the plunger far enough to vent the pressure back into the fluid resouver or your brakes will not release and they will get worse with heat as the fluid boils and expands adding more pressure to the calipers
    Yes you can call me Smitty or Mark or Smith I don't care. You know now that you mention it I have pressed the brake peddle with the cover off the mc and noticed the pressure vent back into the rear reservoir but not the front. Does that mean my mc is bad?
    Mark Smith
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