JD 2640 clutch, tranny, starting problems

I was going to say I am looking for a little help with my tractor but may need a lot of help. I put a new clutch, pressure plate assembly and bearings in my tractor. Everything worked fine for about 10 minutes after getting everything back together. I had stopped the tractor and put it in park and then went to go again and I couldn"t get it in gear (Heavy gear clashing) as if the clutch wasn"t disengaging. I tried adjusting the clutch pedal out both ways from the recommended setting and I still couldn"t get it into gear. Through the access hole I adjusted the pressure plate to maximum release and still I could not get it into gear. With the clutch pedal depressed I can spin the clutch disc with a screw driver so it doesn"t make since that I couldn"t get it into gear. The story gets interesting from this point. My friend came over with his truck and trailer to pick the tractor up to take it to his available garage space since we have been having so much rain. I had left the key on when adjusting the pressure plate the week before and of course the tractor wouldn"t start. Three hours later after a 50 amp charger and jump from a running truck we finally got the tractor to start (Very odd). We then figured we would winch and push the tractor up on the trailer. My friend got up on the tractor and tried to put it into gear and it went right into gear - no grinding. We decided to haul it to his place anyway since he wanted to borrow it to cut hay. Took it off the trailer and it ran and shifted fine through all the gears. The next morning he had problems getting it started even after putting a new battery in it and with a 200 amp charger and a jump vehicle. He then tried to back up and the gear lever wont even go into reverse and or back into park. This tractor had no problems of any kind before the clutch replacement. Any help or ideas would be appreciated.

Possible bad pilot brg or warped clutch plate. Does starter have 12+ volts of elect?

TX JIM,I put a new JD pilot bearing in when I did the clutch. I lightly tapped it in until it seated. The clutch disc is an aftermarket disc. I didn't think to check to see if it was warped out of the box. What happens when either of the two above are bad and would it relate to the apparent transmission problems that I now have? Yes the the starter has 12 volts to it. This tractor started fine only when disengaging the hydraulics by a screw-in pin on the pump. I am going to check and see if the starting problem is there - maybe a broken pin etc.

I've seen newly installed pilot brgs & clutch disk ruined when the 2 tractor halves were forced back together.

Some reman clutches are warped out of the box but you can usually get them in gear though not easily. You didn't put it in backwards?
Where does your battery ground? Perhaps it's not tight.

TX JIM

This would be only my second clutch installation so not an expert by any means. When putting the two halves back together I had my friend putting pressure on the one half while I used a screw driver to slowly turn the ring gear while it engaged the 1st shaft. I did the same immediately until the 2nd shaft engaged and then the two halves were close enough for the bolts to finish pulling them together. Anyhow it looks like I need to split the tractor again and check the clutch disk and pilot bearing as you and the reply from D seem to be pointing me there.

D,

I installed two heavy gauge ground wires directly to the frame shortly after purchasing the tractor 7 years ago to alleviate starting problems back then.