Well from what i see i see lots of clutch lining fibersthat more then likely came from either the T/A or the PTO . With that being said the WHOLE hyd system has been starved .With out being there and looking and watching it sound like the dump valve is sticking BUT to be sur here again I would have to be there to see what and how is happening . Keep in mind here ALL the clutch packs in the T/A require hyd pressure from the MCV to lock up and MOVE the tractor . The dump valve does just that it DUMPS hyd pressure off the clutch pac.'s so you can shift them with no gear hang . The little blinky light in the gauge cluster tells you when you either have NO Hyd pressure at the MCV due to either you depressing the clutch pedal or a system failure in the MCV system. That oil light also is the ENGINE LOW OIL PRESSURE light ( yea i always thought that was a stupid idea ) with as contaminated as that system is and BTW that is the worst i have ever seen every pump in that tractor has been starved and i am sure has damage . Some of that crud could have been sucked around the filter and invaded the MCV and has valves sticking . all in all you have a MESS . Where would i start , like i have said many times over i would start with a total drain of the HYD OIL buy a CASE of filters and NEW filter gskts and then TESTING of the whole HYD system for flow rate and pressures at operating temp . Then and only then would the parts list be made . as for YOU getting into the MCV valve body as a Novice first off ya need a clean work area i prefer a metal work bench a good stout vice . The valves and springs are under spring pressure and they will go flying when the plugs are removed ( i personally turely hate crawling around on the floor valves and springs that end up bouncing off the back wall of a 72 foot shop ) NO RAGS NO PAPER TOWELS , clean parts cleaning fluid and compressed air only for cleaning For BURR removal polishing cloth only as all valves are fitted to the bore if ya got a score ya smooth it up but not take or try and remove the score line . The steering orface ya leave it alone . When removing the MCV from the frame you have to be careful of the sump check plug and spring , they are located in the lower right hand corner of the frame . I also do believe that with the fine care that tractor has hand in it's life that you will become and expert of every inch of that tractor and every nut and bolt .
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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