SandDabMcSkeg
Poster
Posts: 92
Loc: Coos Bay, Oregon
Reg: 01-04-18
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10-20-21 10:21 AM - Post#2829532
I had Apple Hydraulics re-bore and sleeve my Delco wheel cylinders for my 46 Fleetmaster, I installed rebuild kits, and new bleeder valves from Chevs of The 40's. The bleeder valves leaked fluid slightly, so I re-installed the original bleeders, they don't leak as bad but do leak. Something has happened to the bleeder valve seats? That is where they seal, the base or "seat". Do not recommend thread sealer because they don't seal that way. The fluid is coming out the hole in the bleeder past the seats. Has anyone had experience in stopping this problem? In 50 years I have never had bleeders not seal, but I have never re-bored cylinders before either, I always used new ones but wanted to stay away from Chinese stuff so opted for re-boring my Delcos. Anyone ever solve this problem before?
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 Shepherd
Valued Contributor
Posts: 3442
Loc: Lake George, NY
Reg: 11-11-15
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10-20-21 01:46 PM - Post#2829539
In response to SandDabMcSkeg
Possible they were sand blasted during the upgrade. If so the slightest grit in the bleeder seat can cause this.
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Tony1963
Frequent Contributor
Posts: 2448
Loc: Orlando Florida
Reg: 07-09-18
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10-28-21 03:29 PM - Post#2829891
In response to SandDabMcSkeg
These wheel cylinders leak just like a valve fails to seal. There is an uneven surface for sealing and the ball seat on the bleeder screw is not totally sealing off the fluid path.
Fixing it? With enough time and money you can fix anything. I'd throw them away and get replacements.
Life is too short.
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TAT_2
Site Ambassador - Member #26 - "23rd Year" Silver Supporting Member
Posts: 38136
Age: 71
Loc: "UNDER THE BOARDWALK"
Reg: 10-29-00
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11-09-21 06:20 PM - Post#2830541
In response to SandDabMcSkeg
http://www.russellperformance.com/mc/speed-bleeder...
THAT MAY WORK.
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PREVIOUS VETTE'S 58,68,70,76,78,85,90
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