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  1. #1

    Member #
    8685
    Bike(s)
    ībird (ī97); Trumpet 955i Sprint ST ; CBX 1000
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    May 28 2010
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    next to Vienna (Austria-> Europe)
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    My "tool of the month": Brake piston (caliper sided) removal plier...

    Purchased this last week,

    Draper zange.jpg
    "Draper Expert" motorcycle brake piston removal plier. Paid 21.- UK pounds (incl. p&p) via the ībay. Didnīt use it yet, but quality is really heavy duty. Have some calipers where I canīt shoot out the piston(s) with compressed air and didnīt want to taylor me a hydraulic press using an old grease gun and some hoses. Gone the easy way ....will rebuild the front brakes of my CBX1000 soon and update the "handling" of the tool.

    Mock up test looks really handy, so far.

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  3. #2
    can boil a minute rice in 58s
    Member #
    12509
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    BMW r1150rt (ex-XX man)
    Join Date
    Oct 08 2011
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    any pic's of the cbx??

    i'v one i'm detailing a few parts on.

    have it a long time, http://i22.photobucket.com/albums/b3...n67/img026.jpg

  4. #3

    Member #
    8685
    Bike(s)
    ībird (ī97); Trumpet 955i Sprint ST ; CBX 1000
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    Quote Originally Posted by ken.G View Post
    any pic's of the cbx??

    i'v one i'm detailing a few parts on.

    have it a long time, http://i22.photobucket.com/albums/b3...n67/img026.jpg
    Hello dude,
    see:
    My CBX Thou...

  5. #4

    Member #
    1728
    Bike(s)
    81,82,83 CBF's, 98 CBRxx, 07 CBR-1000RR/R, 83 FXSB
    Join Date
    Jun 03 2007
    Location
    Canada
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    Couple of comments. Firstly..looks like a very nice tool for when your working on calipers on the bench and not on the bike. I do not have one myself as I have somewhat perfected a technique for getting the caliper pistons out of the calipers without the use of tools (in most instances). If the brake system is intact and working to some degree, I simple use the brake fluid pressure to carefully push the pistons out of the caliper bores prior to tearing the system down. On multi caliper set ups like duel disc front ends, I use a stop block (the old brake pads in most cases) to stop the pistons on one caliper from being fully ejected from the caliper casting, before the second caliper pistons are pump out of the second caliper. As the pistons move outboard in the caliper bores I top up the MC to ensure that there is ample fluid available as the caliper bore volume gets larger...I don't allow the MC to go empty. Typically most pistons will move outboard of the caliper in this fashion.

    If your dealing with a caliper that is broken down (brakelines disconnected/is off the bike) then your tool will come in rather handy I should think....if the pistons are not siezed hard into the calipers. While surfing the CB-F site I visit the other night there was a picture of a caliper piston set that your tool (or one like it) was used on. These pistons may have been really stuck I think. The operator of the tool came on to it hard enough to gouge the inside surfaces of the pistons (the sufaces that the tool grips) during his removal attempts. I would warn anybody off of going to that extreme amount of force to get the removal done if the intent is to reuse the same pistons. I know that older hardware can be a pain to dis-assemble at times and maybe excessive force is called for,..but if the intend is to reuse the items then some times we must seek a different way to get the job done. I'll see if I can find the pictures posted of the pistons I speak of...could not find the thread again at the moment. I will admit that the pistons I mention may have been way past the point of saving, but I need to check the pictures again to be sure.

    I also agree that the idea of using compressed air, although it works for most jobs, is something that has fallen on disfavor with me. The speed that the pistons can exit the caliper bores is just to fast for me to want to attempt to control them anymore. Simply pumping the pistons out of the calipers with the bikes own brake fluid system pressure is a more controlled approach that work 90% of the time. You need to pre-plan your work routine so as not to lose the hydralics of the bikes brakes before you tear down the calipers is all.

    Tony
    "Stemmata quid faciunt."

  6. #5

    Member #
    8685
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    Quote Originally Posted by TigreST View Post
    Couple of comments. Firstly..looks like a very nice tool for when your working on calipers on the bench and not on the bike. I do not have one myself as I have somewhat perfected a technique for getting the caliper pistons out of the calipers without the use of tools (in most instances). If the brake system is intact and working to some degree, I simple use the brake fluid pressure to carefully push the pistons out of the caliper bores prior to tearing the system down. On multi caliper set ups like duel disc front ends, I use a stop block (the old brake pads in most cases) to stop the pistons on one caliper from being fully ejected from the caliper casting, before the second caliper pistons are pump out of the second caliper. As the pistons move outboard in the caliper bores I top up the MC to ensure that there is ample fluid available as the caliper bore volume gets larger...I don't allow the MC to go empty. Typically most pistons will move outboard of the caliper in this fashion.

    If your dealing with a caliper that is broken down (brakelines disconnected/is off the bike) then your tool will come in rather handy I should think....if the pistons are not siezed hard into the calipers. While surfing the CB-F site I visit the other night there was a picture of a caliper piston set that your tool (or one like it) was used on. These pistons may have been really stuck I think. The operator of the tool came on to it hard enough to gouge the inside surfaces of the pistons (the sufaces that the tool grips) during his removal attempts. I would warn anybody off of going to that extreme amount of force to get the removal done if the intent is to reuse the same pistons. I know that older hardware can be a pain to dis-assemble at times and maybe excessive force is called for,..but if the intend is to reuse the items then some times we must seek a different way to get the job done. I'll see if I can find the pictures posted of the pistons I speak of...could not find the thread again at the moment. I will admit that the pistons I mention may have been way past the point of saving, but I need to check the pictures again to be sure.

    I also agree that the idea of using compressed air, although it works for most jobs, is something that has fallen on disfavor with me. The speed that the pistons can exit the caliper bores is just to fast for me to want to attempt to control them anymore. Simply pumping the pistons out of the calipers with the bikes own brake fluid system pressure is a more controlled approach that work 90% of the time. You need to pre-plan your work routine so as not to lose the hydralics of the bikes brakes before you tear down the calipers is all.

    Tony
    Oi Tony,
    agree...did same like you mention, but have several "off the bike" and already disconnected calipers (for ages laying in the shelf) which need a good TLC before refitting. and i donīt wanne re-connect them onto a small brake hose and mastercylinder assy, because of all the bleeding time then.
    I used the idea with a big rag-bolt and a puller once, didnīt find it as pricey as the plier. same with an old grease gun and some tayloring.
    i`d also used the (bikeīs own) brake system several times, but when the bugger stucks/ or retains by itself itīs like a pain in the Bum.
    when using air, i stop the pistons on a handmade wooden item, which fits straight into the caliper (instead of the pads).

    very nice read up, by the way...thanks for your feedback.
    cheers,
    fred

  7. #6
    Need 4 speed = Food 4 thought!
    Member #
    81
    Bike(s)
    Red CBR1100XX 1999 + yellow CBR1100XX 2004 special
    Join Date
    Oct 21 2006
    Location
    Amsterdam, The Netherlands
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    I sell (and use) a cheaper version of these.
    The advantage os these pliers is that you can also rotate the pistons for cleaning-purpose without removing and bleeding. This will save a lot of time......
    For major works you do need to remove the pistons.

  8. #7

    Member #
    8685
    Bike(s)
    ībird (ī97); Trumpet 955i Sprint ST ; CBX 1000
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    Quote Originally Posted by Helvet View Post
    I sell (and use) a cheaper version of these.
    The advantage os these pliers is that you can also rotate the pistons for cleaning-purpose without removing and bleeding. This will save a lot of time......
    For major works you do need to remove the pistons.
    Yes Dude,
    Timeīs money...havenīt either of them . I didnīt know, that youīre a "trader"...maybe iīd have purchased some stuff from you. Unfortunately your homepage is in netherland language...didnīt found an english (german) link?
    Hereīs some stuff from the rear caliper of my CBX...did the major service last year (all new seals and ATE lubrication of the pistons [rubber red grease stuff...for uk dudes]).
    Bremszangen CBX.jpg

  9. #8
    Need 4 speed = Food 4 thought!
    Member #
    81
    Bike(s)
    Red CBR1100XX 1999 + yellow CBR1100XX 2004 special
    Join Date
    Oct 21 2006
    Location
    Amsterdam, The Netherlands
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    Re: My "tool of the month": Brake piston (caliper sided) removal plier...

    Quote Originally Posted by xjrsommsi View Post
    Yes Dude,
    Timeīs money...havenīt either of them . I didnīt know, that youīre a "trader"...maybe iīd have purchased some stuff from you. Unfortunately your homepage is in netherland language...didnīt found an english (german) link?
    I've upgraded to a new website in March this year. Unfortunately this was 3 months later than expected, so I did not have the time to do much about it. I will be adding pictures this winter, and when I have the time also the English translations (probably a year later).


 

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