Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 11/2017 200 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Master Brake Cylinder Question 200 1985

posted by  dobber13 on  Mon Jun 22 14:31 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Oct 18 19:10 CST 2014
[RELATED]

I thought I found my brake problem from my post(front caliper problems) but the bleeder I found a little loose after bleeding wasn't it but it didn't help.I still have the outer pads not working even with some rust on the disc's(from rain 4 days ago) after rebleeding the system again.So now my question is can the master cylinder be bad without external leaking? I used the power bleeder for bleeding,so I did get a good stream of fluid.Would I have found a problem If I bled the breaks the old way of pumping the pedal.The brakes work but when applying the brakes the feeling of bumping/shuddering is felt.I don't think the disc's are worped but I guess they could be.I just don't have the $$$ to through at it but it seems hard to figure out. Thanks for any help.Charlie








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Master Brake Cylinder Question 200 1985

    uid 18886's pic
    posted by  sdewolfe on  Mon Jun 22 20:23 CST 2009
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Jan 31 05:56 CST 2011
    [RELATED]

    Howdy Charlie,

    Yes, a master cylinder can fail with no leaks to the outside world.

    But, in your case, where you have good pressure on the inside of the caliper and no pressure on the outside of the caliper, look at the caliper. The two halves of the caliper have alignment punch marks that must match or the fluid passage to the outside of the caliper will be blocked; no pressure on the outside.

    See this post and associated links:

    http://www.brickboard.com/RWD/volvo/1314356/220/240/260/280/mismatched_caliper_halves.html

    Let us know the outcome.

    --
    Mr. Shannon DeWolfe -- I've taken to using mister because my name misleads folks on the WWW. I am a 53 year old fat man. ;-)








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Master Brake Cylinder Question 200 1985

      posted by  dobber13 on  Tue Jun 23 00:42 CST 2009
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Sat Oct 18 19:10 CST 2014
      [RELATED]

      HI,i went through that 5 yrs. ago when I got the calipers from NAPA and had one that was mismatched but thats a hole different story. I don't know why the two front calipers are doing that just on the outside.








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Time to fess Up 200 1985

        posted by  dobber13 on  Tue Jun 23 16:29 CST 2009
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Sat Oct 18 19:10 CST 2014
        [RELATED]

        I pulled the front pads out again and the light bulb came on. When I 1st pulled the pads an cleaned all the parts with a small wire brush and reinstalled the pads I put the inside pad on the outside and the outside on the inside and then I read a post saying not to do that.Well now don't I feel stupid! But I also found that my wheel bearings where a little loose so I tightened them and after a test ride every thing is good.The reason I thought the outer pistons where not working was some of the rust from a resent rain was still on the disc's.Pads do wear differently and I guess that was what I was looking at.Well I guess the only good that came out of this was it just cost me time and not $$$$$. Thanks,Charlie








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          Time to fess Up 200 1985

          posted by  Trev29 on  Wed Jun 24 01:09 CST 2009
          Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
          last visit: Fri Oct 17 05:56 CST 2014
          [RELATED]

          In your first post you wrote, "I still have the outer pads not working even with some rust on the disc's(from rain 4 days ago) after rebleeding the system again"

          I think most of us would have assumed that you had pressed the pistons into the calipers when removing/installing the pads and discovered that they had not pushed back out when the pedal was applied.

          Anyhow, pushing the pistons in and checking for their return is common practice and helps to detect seized/seizing pistons.

          --
          1980 245 Canadian B21A with SU carb but electronic ignition and M46 trans in Brampton, Ont.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.