break pedal feels soggy

Discussion in 'Technical' started by mashori, Jul 13, 2009.

  1. mashori

    mashori Member

    Joined:
    Apr 21, 2006
    Messages:
    3,630
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    San Diego, Ca
    Vehicle:
    1971 V8 Maverick
    I had my front disc conversion done maybe 2 weeks ago. When I first was driving it the breaks felt very strong. I lent the car to my bro for a few days and when he brought it back the pedal is very soft. It comes all the way up but then I have to depress it pretty far and the breaking is definitely not as strong as it was when I first got her. It feels like it's about to bottom out.

    I inspected th break pads and rotors and calipers. I couldn't find anything wrong. Plenty of oil in the reservoir. And no leaks that I can spot. :hmmm:
     
  2. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    Check your wheel cylenders in the back betcha one is leaking.If there are no leaks(your sure right?)then its the master cyl going bad or air in the lines...OR your bro pounded on the car and you need to re-adjust the rear brakes now.Of course you wouldnt have air in the lines unless they were opened up for some reason.
     
    Last edited: Jul 13, 2009
  3. mashori

    mashori Member

    Joined:
    Apr 21, 2006
    Messages:
    3,630
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    San Diego, Ca
    Vehicle:
    1971 V8 Maverick
    oh I never check the back breaks :scratchchin:
    I'll check those out tomorrow
     
  4. Earl Branham

    Earl Branham Certified Old Fart

    Joined:
    Mar 9, 2002
    Messages:
    6,367
    Likes Received:
    201
    Trophy Points:
    218
    Garage:
    1
    Location:
    Lugoff, SC
    Vehicle:
    '69.5 Maverick 302, T-5, Grabber Green
    Probably just needs a good bleeding and adjustment of the rear brakes. Goog luck!
     
  5. mashori

    mashori Member

    Joined:
    Apr 21, 2006
    Messages:
    3,630
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    San Diego, Ca
    Vehicle:
    1971 V8 Maverick
    ok I'm gonna open my haynes manual and read up on the back cylinders. can't be too hard. And I'll go and check everything for a leak one more time. I'll report back thursday. I'll bleed it too, maybe that's all it needs, we'll see. thanks
     
  6. rthomas771

    rthomas771 Member

    Joined:
    Jan 22, 2008
    Messages:
    8,093
    Likes Received:
    981
    Trophy Points:
    498
    Garage:
    1
    Location:
    GA
    Vehicle:
    '74 Maverick 302 5-Speed.'60 Falcon V8. '63.5 Falcon HT
    Did you replace the flexible brake hoses when doing the swap? Old hoses will balloon under pressure and less fluid will get to the caliper/wheel cylinder.
     
  7. mashori

    mashori Member

    Joined:
    Apr 21, 2006
    Messages:
    3,630
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    San Diego, Ca
    Vehicle:
    1971 V8 Maverick
    yeap. I replaced that all with new stuff. I still haven't had a chance to look closer for any leaks but hopefull thursday.
     
  8. bmcdaniel

    bmcdaniel Senile Member Supporting Member

    Joined:
    Jul 2, 2002
    Messages:
    6,843
    Likes Received:
    692
    Trophy Points:
    318
    Location:
    York. PA
    Vehicle:
    '70 Maverick Grabber
    When I did the disc conversion I had to bleed the front brakes several times 'till they felt good. Not sure why they were so difficult. Pedal felt "soggy", I pinched the front hoses and then the pedal felt hard so I knew the problem was up front.
     
  9. mashori

    mashori Member

    Joined:
    Apr 21, 2006
    Messages:
    3,630
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    San Diego, Ca
    Vehicle:
    1971 V8 Maverick
    breaks fixed!

    I stopped by Bryant's shop in San Diego, Gear and Axle. It was great meeting you Bryant. I gotta say a lot goes into our differentials, it was nice seeing it all up close. So Bryant has a long history of work as a mechanic before working on differentials. He took me through my problem with my breaks. Turned out to be the passenger drum cylinder was shot. He took me through adjusting it and he replaced the cylinder and the breaks no longer feel soft.

    Great work! More to come I'm sure. Here are a few pics. The black car is Bryant's, very sweet car up close. He has put a lot of work into it.

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  10. sierra grabber

    sierra grabber Certifiable

    Joined:
    Sep 29, 2005
    Messages:
    2,808
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    northern nevada
    Vehicle:
    71 grabber red and black; 74 2dr LDO comet
    that black mav is sweet! good to hear you guys are able to get together on wrenching, even when you know what your doing its good to have help(y). I constantly ask my friends to come over even if its just to point and laugh:cool:....
     

Share This Page