JLPurcell Posted March 17, 2019 Author Share #25 Posted March 17, 2019 Pulled the rear brake proportioning valve off this evening and took it apart. The lower seal was full of some kind of sandy material. Does anyone have one of these Sumitomo valves they would be willing to sell? I am in the process of going through each component of the brake system. "One bite at a time". JLP Link to comment Share on other sites More sharing options...
Patcon Posted March 17, 2019 Share #26 Posted March 17, 2019 I might have a spare. I would need to look around some 1 Link to comment Share on other sites More sharing options...
240260280 Posted March 17, 2019 Share #27 Posted March 17, 2019 Is the throw of the push rod from the pedal correct? 1 Link to comment Share on other sites More sharing options...
jonathanrussell Posted March 18, 2019 Share #28 Posted March 18, 2019 (edited) On 3/16/2019 at 10:39 PM, JLPurcell said: Pulled the rear brake proportioning valve off this evening and took it apart. The lower seal was full of some kind of sandy material. Does anyone have one of these Sumitomo valves they would be willing to sell? I am in the process of going through each component of the brake system. "One bite at a time". JLP MSA sells a seal kit I have used successfully to refresh my valve. https://www.thezstore.com/page/TZS/PROD/24-5556 Apologies for the multiple posts. When I hit save, didn't work as I usually see. Sorry. Edited March 18, 2019 by jonathanrussell 1 Link to comment Share on other sites More sharing options...
jonathanrussell Posted March 18, 2019 Share #29 Posted March 18, 2019 On 3/16/2019 at 10:39 PM, JLPurcell said: Pulled the rear brake proportioning valve off this evening and took it apart. The lower seal was full of some kind of sandy material. Does anyone have one of these Sumitomo valves they would be willing to sell? I am in the process of going through each component of the brake system. "One bite at a time". JLP MSA sells a seal kit I have used successfully to refresh my valve. https://www.thezstore.com/page/TZS/PROD/24-5556 Link to comment Share on other sites More sharing options...
jonathanrussell Posted March 18, 2019 Share #30 Posted March 18, 2019 On 3/16/2019 at 10:39 PM, JLPurcell said: Pulled the rear brake proportioning valve off this evening and took it apart. The lower seal was full of some kind of sandy material. Does anyone have one of these Sumitomo valves they would be willing to sell? I am in the process of going through each component of the brake system. "One bite at a time". JLP MSA sells a seal kit I have used successfully to refresh my valve. https://www.thezstore.com/page/TZS/PROD/24-5556 Link to comment Share on other sites More sharing options...
240260280 Posted March 18, 2019 Share #31 Posted March 18, 2019 You bought 3 kits ? 3 1 Link to comment Share on other sites More sharing options...
87mj Posted March 26, 2019 Share #32 Posted March 26, 2019 This probably wont be helpful at all but I had soft pedal. I bled the brakes numerous times and nothing helped. Finally I installed bleeder valves on the brakes and bled them again. That worked. 1 Link to comment Share on other sites More sharing options...
siteunseen Posted March 26, 2019 Share #33 Posted March 26, 2019 Bleeder valves work good for me also. Definitely worth the money. Link to comment Share on other sites More sharing options...
JLPurcell Posted April 5, 2019 Author Share #34 Posted April 5, 2019 I am happy to report that the brake problem is resolved. That is the good news. The bad news is that I have no idea what fixed it. I got so frustrated that I took each and every brake component apart and rebuilt it, flushed and blew out all of the lines and last night took it out for a spin and the brakes are working great. ? 3 Link to comment Share on other sites More sharing options...
Hardway Posted April 5, 2019 Share #35 Posted April 5, 2019 Glad you got it fixed! Since you mentioned the debris in the rear prop. valve, I am betting you ended up circulating some rust or dirt throughout the system when you bled it. Then the debris got stuck causing the issue. The brake components are somewhat precision pieces so it would not take much to create an issue. Taking everything a part, cleaning it, and rebuilding it along with the blow out of the lines ensures your system is clean. 2 Link to comment Share on other sites More sharing options...
Popular Post JLPurcell Posted April 5, 2019 Author Popular Post Share #36 Posted April 5, 2019 My test drive last night, 10 minute test drive turned into a 1 hour cruse! I forget how much fun this car is to drive over the winter months. 5 Link to comment Share on other sites More sharing options...
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