Strange Hard Lever After Pad Change

Discussion in 'Technical Help' started by Evoboy, Nov 18, 2020.

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  1. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    #1 Evoboy, Nov 18, 2020
    Last edited: Nov 18, 2020
    so i changed the front pads on my 765r the other day, now i have a strange hard lever when the bikes on the move as soon as the bike slows to around 5mph the lever returns to normal, ive bled the system with bike on and off, cups in the calipers move free and evenly
    If i disable to abs via dash the lever is normal

    Any ideas?

    Ps: the abs light goes off as soon as i start moving as normal
     
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  2. Rocker

    Rocker Elite Member

    May 1, 2016
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    I thought you needed special tools/software to bleed an abs system
     
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  3. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    Not as far as i know, ignition on, bleed master then calipers
     
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  4. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    No just pushed the pads back, removed the retainer, pulled pin, replaced pads and bolted them up
     
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  5. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    I know really weird, only disabled them as a test, like abs on hard lever, abs off lever normal, i think maybe pumps f#cked
     
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  6. Ducatitotriumph

    Ducatitotriumph Crème de la Crème

    Apr 25, 2019
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    Totally right @Rocker as it's a menu in tuneecu to do it.
    Ideally, need two people!
     
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  7. Ducatitotriumph

    Ducatitotriumph Crème de la Crème

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    Too much fluid in the reservoir???
     
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  8. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    No only topped up to max as new pads, the levels on the resivour as there to tell u brake wear
     
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  9. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    The hard lever appeared after the install of pads not during the bleeding, i bled them out of desperation lol, i have tuneecu, however ive loaned my bt dongle out, so npt had chance to bleed abs pump
     
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  10. Rocker

    Rocker Elite Member

    May 1, 2016
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    Sounds like an abs bleed problem if the lever is ok with the abs off try a rebleed with the appropriate software which I think opens the valves in the pump
     
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  11. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    The hard lever appeared after the install of pads not during the bleeding, i bled them out of desperation lol, i have tuneecu, however ive loaned my bt dongle out, so npt had chance to bleed abs pump
    I ask for my module back asap, do u just bleed them during the bleed abs cycle?
     
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  12. Ducatitotriumph

    Ducatitotriumph Crème de la Crème

    Apr 25, 2019
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    copy and paste...
    Bleeding
    1 - The first stage is to bleed the brakes in the normal way until the old fluid (or air) is flushed out. On completion there should be pressure at the lever and brake operation should feel normal.
    2 - Next we need to bleed the ABS portion of the system. That is done by opening and closing the solenoids in the ABS modulator. Connect the DealerTool cable to the diagnostic connector and establish communications with the ECU. From the menu bar select “ABS” then “Connect to ABS Unit”.
    [​IMG]
    Above: in this screenshot there are no fault codes. Obviously any fault should be investigated and corrected before the stored codes are cleared.
    3 - Apply pressure at the brake lever to pressurize the system then click “Bleed System” and release the bleed nipple. You may need some assistance to do all these things at once but I found there was enough delay after clicking “Bleed System” to allow me to open the bleed nipple before the solenoids were activated.
    [​IMG]
    4 - When DealerTool displays a “Bleed Complete” message close the bleed nipple and release the brake lever. Activating the solenoids allows new fluid to circulate through the modulator. This operation should be repeated several times to ensure old fluid is thoroughly flushed. If the brake system has been stripped then repeat this step until no more bubbles emerge.
    [​IMG]
    5 - Since we flushed out the old fluid from the ABS system it is now mixed with the clean fluid introduced during the first stage of the bleed process. To remove all traces of old fluid we need to go back and repeat the original bleed sequence. DealerTool can be disconnected and the brakes re-bled in the normal way.
    6 - Repeat the whole procedure for the rear brake. The front and rear systems are independent but the process is the same for each.
    Notes

    Use only DOT4 brake fluid as recommended in the factory manual. Do not use DOT5 brake fluid. The higher number does not signify higher performance. Silicone fluids are not suited to high-performance applications and are generally not recommended for ABS systems. Read more.

    With some ABS systems no special steps are required for bleeding as long as no air is allowed to enter the ABS modulator. With other systems there is a “dead” section within the ABS modulator that can only be flushed by opening the solenoids. I’m not familiar with the internal ports and valves of the Nissin ABS modulator fitted to Sprints and Tigers with the ABS option. However, the Triumph factory manual describes this procedure for routine bleeding so, to be safe, we have to assume the ABS system cannot be thoroughly bled without this procedure.

    As long as no air enters the system ABS brakes can be bled in the usual manner with no ill effects in the short term. However, if old fluid remains in the system it will accumulate increasing moisture and deteriorate. In that case using the correct procedure to thoroughly flush out the old fluid will ensure maximum performance from the ABS system.
     
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  13. Rocker

    Rocker Elite Member

    May 1, 2016
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    You say the lever is normal at under 5mph the abs system doesn't work under 5mph you say that with the abs off its normal so must be an abs issue apart from that not owning your model I can't be of further assistance
     
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  14. Evoboy

    Evoboy Well-Known Member

    Jan 30, 2020
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    Its much appreciated already mate!
     
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