First how is the fluid in the MC reacting after you release it from the a pumped up hard pedal? Does it ..fountain.. in the reservoir as was mentioned as a symptom to check in your first post? If so that is a sign of air still in the system. When you are testing the pedal by pumping it up is the engine running or not? Should be able to check the master cylinder for leak- by in the following manner. Purchase a flare line plug of cut a short end ..not much more that an inch. of old line the proper size to fit in the master cylinder fitting. Pinch the line shut and braze it to seal it. The gravity bleeding while you are attaching it should be good enough to test it once installed. Obviously, with the plug installed the pedal should not bleed down. If the MC tests okay for no bleed-down I would suggest pulling the vacuum supply hose off at the Hydro-vac and check for fluid. If all else fails I would recommend at least trying a couple good bleed cycles at each wheel with a pumped up pedal and the engine running to see if you can move the air out with the higher pressure built up.
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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