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Thread: rallye 1.3s brake pedal go to the ground

  1. #11
    Experienced Lancista AB095's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Worth overhauling calipers yourself, put in new bleed nipples. Nipples are only a about 4Euros each. If fluid has leaked into booster it is likely there is corrosion inside the booster. I would strongly recommend overhauling that as well. It is relatively easy to remove if you have nice slender fingers, mine are like pork sausages so a bit harder. I replaced both with new from Mara in Italy. I would not have saved anything by overhauling the old ones.

    Re-fitting the new booster is a bit more difficult as the ball joint at the pedal is difficult to line to with the threaded rod from the booster. I removed the joint, threaded it onto the booster rod & then fitted to the brake pedal. The joint is not round, its oval so you need to depress the pedal to the floor to get the joint to fit. Adjust the rod length so the domed nut at the master cylinder end is flush with the booster body.

    To help, a picture of the ball joint removed from the brake pedal. Also use Dot 5.1 Fluid (silicone) will not absorb moisture.
    Click image for larger version. 

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  2. #12
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    Re: rallye 1.3s brake pedal go to the ground

    Quote Originally Posted by Danrap View Post
    Thank you bmarler. Yes this is my idea.
    Considering that now I have brake pedal that goes down without braking, due (I think) to the master cylinder, I would to replace the master cylinder,bleed front brakes with nipples, by myself and then take the old lady to a mechanic to fix or replace rear calipers with new ones.
    I would not want to take the gamble of driving the car with potentially air in the system to the garage. Remove the rear calipers (the ones who should have the bleed screw) and bring them to the garage to replace the bleed screws, and install the calipers and master cylinder, and then bleed the system properly. (I assume that the bleed screws are still in place but broken off (and not leaking))
    Karl

    1964 Flaminia Touring Convertible 3C 2.8
    1965 Fulvia Berlina (Appendix K project)
    1969 Fulvia 1,6 HF
    1999 Ypsilon
    2003 Thesis 3,2
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  3. #13
    Legendary Lancista lancialulu's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Quote Originally Posted by AB095 View Post
    Also use Dot 5.1 Fluid (silicone) will not absorb moisture.
    Click image for larger version. 

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    Only use SILICONE fluid if all seals have been changed in the complete system and flushed with Dot5.1 before filing and bleeding. Dot 5.1 is not compatible with other brake fluids like Dot4 etc

  4. #14
    Experienced Lancista Danrap's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Tank you guys.
    I don t have money to replace all calipers and all seals and master cylinder now..I have to wait..
    I would to take a temporary way to permit my car to brake..

  5. #15
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    Re: rallye 1.3s brake pedal go to the ground

    I beleive dot5.1 is comparable with other fluids because it is non-silicone based. I used it for a system flush a year ago, so far no I’ll effects.
    https://www.epicbleedsolutions.com/r...1-brake-fluid/

  6. #16
    Legendary Lancista lancialulu's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Quote Originally Posted by Miguelarroz View Post
    I beleive dot5.1 is comparable with other fluids because it is non-silicone based. I used it for a system flush a year ago, so far no I’ll effects.
    https://www.epicbleedsolutions.com/r...1-brake-fluid/
    5.1 is ok with everything except 5 which is silicon - the earlier post refering to 5.1 (silicone) momentarily confused me. 5.1 is gycol not silicone hence it can mix.

  7. #17
    Experienced Lancista Danrap's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Hi Guys;
    i'm reading old posts to prepare myself to dismantle master cylinder.
    This is the modified by lancialulu paint of S1 seals

    From FRONT to REAR of Master Clinder:
    BIG-->SMALL-->BIG-->SMALL


    But in this draw (edited reverse to fit upper draw)
    Click image for larger version. 

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    i read "inner seals are wider".
    Which is correct?
    This is the kit
    Click image for larger version. 

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    Referring to numbers of the first image i will put gaskets A in 4 and 2 with open lip seal to the left correct?

    Last question; to remove old seals, i need to remove the little seeger circlips or is it possible to remove and refit without touch circlips?
    Thank you very much..
    Attached Thumbnails Attached Thumbnails fulvia master.jpg  
    Last edited by Danrap; 11th August 2018 at 09:58 PM.

  8. #18
    Legendary Lancista Marnix's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    It was mle that posted the drawing of the master cylinder ages ago. The MC has been chenged over the years. The drawing refers to a S1 MC.
    Lancia Fulvia 2C 1964
    Lancia Fulvia Coupe Rallye 1,3 1968
    Porsche 924 1979
    Alfa Romeo 33 1.4IE 1993

  9. #19
    Legendary Lancista Marnix's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    I most likely have the original drawing for a S2/3 MC (for use with brake booster) somewhere. Call if needed.
    Lancia Fulvia 2C 1964
    Lancia Fulvia Coupe Rallye 1,3 1968
    Porsche 924 1979
    Alfa Romeo 33 1.4IE 1993

  10. #20
    Legendary Lancista Marnix's Avatar
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    Re: rallye 1.3s brake pedal go to the ground

    Below is the drawing of the MC for a S2/3 (this is the original drawing, I modified this one to show the drawing of a S1 MC posted earlier).

    Click image for larger version. 

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    Lancia Fulvia 2C 1964
    Lancia Fulvia Coupe Rallye 1,3 1968
    Porsche 924 1979
    Alfa Romeo 33 1.4IE 1993

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