Brake Spreader Tool
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Thread: Brake Spreader Tool

  1. #1
    1000+ Posts pgti6's Avatar
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    Default Brake Spreader Tool

    I'll be needing to replace brake pads on my 4 piston Brembos soon.

    What's the best tool to push all the pistons back simultaneously without removing the disc?

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    Attached Thumbnails Attached Thumbnails Brake Spreader Tool-spreader-1.jpg   Brake Spreader Tool-spreader-2.jpg   Brake Spreader Tool-spreader-3.jpg  
    Track car-Steel Grey 405 Mi16 2.2 litre


    405 Track car build thread moved to-
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  2. #2
    Fellow Frogger!
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    I've got (or had, might have been stolen) the first one, on a ratchet, and the last one. Never managed to get the last one to work without pulling the disc out, I think it was an issue of wheel arch clearance and getting the handle in a spot that it can be used. The first one works OK I think.
    The middle one looks intriguing. More like the device you see on supercar pitstops.
    1984 505 Executive Auto

    206 GTi 180 - '804 Cat Cams, Jenvey DBW 48mm ITB's, Emtron KV8 ECU, HP Electronik PDM, AIM MXS Dash, Custom Wiring Harness. AST Camber Tops & Coilovers, -2deg camber hubs by Frogstomp Racing, 24mm Torsion Bars, AP Racing brakes, PeugeotSport Baffled Sump, Oil cooler, Quaife LSD, E85.

    Sandown - 1:31.5
    Winton - 1:40.2
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    Previously, 2x 504 Wagon, 505 Wagon, 505 STi, 405.

  3. #3
    1000+ Posts pgti6's Avatar
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    With the stud conversion to the hubs, I can't remove the discs without removing the calipers so the first type is probably useless. The second as you say are a variation used on the Supercars for there enduro rounds.
    The last ones I assume work something like a caulking gun, Unsure about leverage with the short handles tho.
    Track car-Steel Grey 405 Mi16 2.2 litre


    405 Track car build thread moved to-
    http://forum.205gtidrivers.com/index...ic=143279&st=0

    Lap times-
    Sandown 1 27.9
    Phillip Island 1 53.8

    Previous Frenchies-
    1988 205Gti
    1998 306 GTi6
    1997 306 N5 sedan
    1996 306 N3 XT hatch
    1976 Renault R16TS manual in Avocado
    1976 Renault R16TS manual in Trak Yellow
    1975 Renault 5 Guernsey, Channel Islands
    1972 Renault 4 Guernsey, Channel Islands

  4. #4
    Fellow Frogger!
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    I think the leverage is probably fine, but I remember having trouble getting the whole thing in a spot where it would work.

    I'm pretty sure that last time I either just used a big screwdriver gently, or took the caliper off it's bracket.
    1984 505 Executive Auto

    206 GTi 180 - '804 Cat Cams, Jenvey DBW 48mm ITB's, Emtron KV8 ECU, HP Electronik PDM, AIM MXS Dash, Custom Wiring Harness. AST Camber Tops & Coilovers, -2deg camber hubs by Frogstomp Racing, 24mm Torsion Bars, AP Racing brakes, PeugeotSport Baffled Sump, Oil cooler, Quaife LSD, E85.

    Sandown - 1:31.5
    Winton - 1:40.2
    Wakefield - 1:13.5
    Phillip Island - 1:55.9
    Nürburgring - 10:23.ish (Fiesta ST)

    Previously, 2x 504 Wagon, 505 Wagon, 505 STi, 405.

  5. #5
    1000+ Posts PeterT's Avatar
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    Old pad and g-clamp works ok.

    '92 205 Mi16
    '90 Mi16x4

  6. #6
    1000+ Posts pgti6's Avatar
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    Quote Originally Posted by PeterT View Post
    Old pad and g-clamp works ok.
    No room for a G clamp with the disc in place. Also that doesn't allow for pushing all 4 Pistons back simultaneously.
    Track car-Steel Grey 405 Mi16 2.2 litre


    405 Track car build thread moved to-
    http://forum.205gtidrivers.com/index...ic=143279&st=0

    Lap times-
    Sandown 1 27.9
    Phillip Island 1 53.8

    Previous Frenchies-
    1988 205Gti
    1998 306 GTi6
    1997 306 N5 sedan
    1996 306 N3 XT hatch
    1976 Renault R16TS manual in Avocado
    1976 Renault R16TS manual in Trak Yellow
    1975 Renault 5 Guernsey, Channel Islands
    1972 Renault 4 Guernsey, Channel Islands

  7. #7
    1000+ Posts PeterT's Avatar
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    ok, but if you're not in a rush why does it matter? Calipers off and do it slowly.
    Wildebeest likes this.

    '92 205 Mi16
    '90 Mi16x4

  8. #8
    1000+ Posts pgti6's Avatar
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    Looking for a better, simpler and easier solution than mucking about with removing brake components.
    Track car-Steel Grey 405 Mi16 2.2 litre


    405 Track car build thread moved to-
    http://forum.205gtidrivers.com/index...ic=143279&st=0

    Lap times-
    Sandown 1 27.9
    Phillip Island 1 53.8

    Previous Frenchies-
    1988 205Gti
    1998 306 GTi6
    1997 306 N5 sedan
    1996 306 N3 XT hatch
    1976 Renault R16TS manual in Avocado
    1976 Renault R16TS manual in Trak Yellow
    1975 Renault 5 Guernsey, Channel Islands
    1972 Renault 4 Guernsey, Channel Islands

  9. #9
    Fellow Frogger! JAJEA's Avatar
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    WTF?

    Notwithstanding that I'm not familiar with Brembo Brakes, to use any one of those tools without removing the disc from the calipers (actually removing calipers from the discs) is not possible, you cannot poke those tools between the pads and the disc (or between the pad and the piston). So, I can not see how one can use those tools without using the old screw driver (various sizes including left handed Screw Drivers {SD's} versions) [in using the SD, it goes without saying that that it has to be done carefully - in order not to lock the piston within the caliper.

    Also bear in mind that many pad changes are done so many kilometres down the track when the pads have worn the discs to the extent that a ridge is formed on the extremities of the disc not covered by the pad so the pads cannot be removed without pushing the piston in somewhat in any case with a SD.]

    Whilst not working on brakes daily, I have replaced many pads and discs without any such tools. Nevertheless, I can certainly see their use on the track to expedite pad changes.


    PS: Pushing pistons in with SD's (and "G" claps), one has to ensure that the other pistons in the "circuit are not pushed put" - they also have to be restrained!


    Regards,


    JAJEA


    Quote Originally Posted by pgti6 View Post
    Looking for a better, simpler and easier solution than mucking about with removing brake components.

  10. #10
    Tadpole
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    Obviously the Brembo brakes in the video are different to what you'll have, however the brake piston tool is what you'd require.
    The video is shaky at first, but you'll be able to clearly see how to push the pistons back.

    https://www.youtube.com/watch?v=44hBX_AU8Yw

  11. #11
    1000+ Posts PeterT's Avatar
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    You wouldn't change the pads without changing the fluid. So everything will be open anyway. And as said, the rotor will probably be worn. I see your point but I'd still prefer to undo the caliper and have a look anyway.

    With the retaining clip removed it should be easy push them back with those tools shown.
    driven likes this.

    '92 205 Mi16
    '90 Mi16x4

  12. #12
    1000+ Posts driven's Avatar
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    I normally find when the pads are worn out so is the rotor on the Brembos.
    Do the whole lot.

    Brembos are only there for when you make a mistake :-)

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