Posted by charles todd on September 11, 2009 at 20:56:01 from (205.242.95.131):
I have a 1962 Farmall 504 Diesel with TA. I got it from my father about 3 years ago. He had replaced the engine clutch, TA clutch, and reworked the TA to some degree (ramps, rollers, and knurled something) 10 of so years ago. After all this, we split it again and did something else to the TA. It was always difficult to shift after comming to a stop with the clutch pedal down and in direct drive. The only way to shift was to pull the TA lever into TA then select gear then back into direct.
Once I aquired this black sheep of the stable, found this site. I have posted many issues and improvements to this little 504. The members that make this forum are priceless, Thank You!
I since have bought some Blue Ribbon manuals, IH parts manual, and the Operators Manual to complement my I&T Manual. I adjusted the clutch and TA per the book and have had good luck... SO FAR.
About 3-4 weeks ago I noticed that it was hard to shift (grinding) when the RPM's were up, but ok at low RPM. One day I was moving some dirt and it was getting difficult to get into gear. I adjusted the clutch rod only and it improved.
About a week ago I started some intense mowing with my rotary mower in VERY DUSTY conditions. I am mowing new ground behind dozers cutting weeds 5-7 ft tall.
Today I went to mow and could not get into gear after starting, constant gear clash. I got out the book and adjusted to the tee. I even adjusted it to the point that the throw out bearing was engaged into the forks and it would try to pull the tractor while starting in gear.
I told you all this to set up what I suspect MAY have happened. I removed the flywheel cover about six months ago to look at a possible rear main leak. I painted the cover and forgot about it. A ring gear on a flywheel acts like a vacuum pump and it may have pulled in dust and chaf then mixed wirh the light oil leak and gummed up the clutch or pressure plate.
My father has seen a pressure plate finger nut some loose and cause a button (4 pad clutch) to drag, but not on this particular clutch. I have not checked this yet. He also said that one of the buttons may have come loose and is dragging. I have heard no funny noises or smelled burnt clutch. The throw out bearing feels OK, but has some play. Is this normal?
I really do not want to split this tractor anytime soon, I am hopeful that it is a loose finger nut or dust/oil issue. If it is cut debris wrapped up in the clutch, I guess a split is the only cure. Can I hose it (presure plate area) down with brake cleaner? Will this harm anything? I cannot imagine the clutch failing with this little warning and still having adjustment left in the linkage.
I have ranted and raved enough, Here is the Farmall 504 owners manual procedure.
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