Posted by Danny D on April 12, 2014 at 12:16:10 from (172.5.167.25):
I have a 1954 Farmall 300 row crop tractor with a TA and live PTO. I just rebuilt the tractor. When I say rebuilt I mean every piece was disassembled, cleaned, repaired, painted and reassembled with all new, high quality parts when needed. A rebuilt TA was installed. The flywheel was ground, new clutch disk, throwout bearing and a rebuilt pressure plate. The pressure plate has nine springs like the 400, not the same as an H. Everything was adjusted to factory specs. The tractor performed like a brand new machine for about six months of light to moderate use. I did some grading work which required a lot of shifting and some hard pulling but nothing abuseive. I used the TA under heavy loads and for less speed as needed. Everything was fine. I would push the clutch pedal all the way in, the transmission would stop, it shifted easy. When letting the clutch pedal out the TA clutch would engage first then the engine clutch would engage. It worked perfectly. One day doing some snow plough work I noticed the transmission would turn with the clutch pedal pushed all the way in causing it to be hard to go in gear. It wanted to grind. It got worse through the day. When the pedal was let out even a quarter inch the engine clutch would engage. As the pedal was let out more the TA clutch would engage. With the clutch pedal out the tractor operated as it should with no slipping and the TA would work in high and low. Now from a stop when the clutch is in, the transmission wants to turn so much the only way to get in gear is by grinding it in. The engine clutch is barely disengaging when the pedal is all the way down. The tractor takes off as soon as any pedal is let out. The pedal linkage, including the TA, on the outside of the tractor is adjusted correctly. I did take the cover under the engine clutch off today and did not see anything obviously wrong. The clutch plate is recessed in the flywheel so it can not be seen. When the clutch pedal is pushed in, at the end of the free travel, the throwout bearing is touching the three levers on the pressure plate. push a little more and the pressure plate starts to retract away from the flywheel. At this point the clutch should release but it dose not. I adjusted all of the free travel out of the pedal which did make it easier to shift. What could have caused this problem to spring up so quickly and what would the fix be? Incidentally the tractor had the same problem three years ago before I started the rebuild. At that time the clutch was at least 40 years old and the tractor was in rough shape.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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