Most tractors with cabs are merely a few more linkages and wiring harnesses to disconnect when splitting compared to open stations.
Have a 2001 TL90 NH 1280 hours. Was round bailing hay in August. Tractor started losing power going up slight inclines. Nothing very steep. But seemed like it gradually got worse on the steepest incline.
After finishing bailing I looked at my clutch cable and it was just about adjusted as far out as it could go. Couple days latter I loaded a semi with 38 bales. Clutch seemed fine. No loss of power. Let the tractor idle for 30 minutes or so to let the turbo cool down. Shut it off. Couple days latter went to use it and it wouldn't hardly move in low range. Could see a small increase in speed in 4 Low. It would run a little faster in range II 1 2 3 4. Couldn't tell much difference in speed and power from 1 to 3 and when put into 4 it would go in smooth but jump like as if you popped the clutch. Same thing in high range 1 2 3 all runs about the same speed, shift into 4 again it's runs smooth at first then jumps like the clutch was popped and then runs full speed.
Took it to an incline about a 40 degree incline. And it won't climb it in medium or high range. And can hardly climb it in low rang. Change fuel filters, put new air filters in it. Hydraulic fluid looks good except for some reason it is foaming up ? After it sits and before I start it there is no foam. It was about a half gallon low on hydraulic fluid.
It isn't a shuttle shift. Think it is maybe a dry clutch. Range and gear Select shifts are on the right side of the cab. Has a for ward/ reverse shift in the floor on left side of seat. It's a 4WD Cab.
Was told to try holding the break on to see if the engine would idle up ? In low range 1 through 4 it wouldn't move didn't bog the tractor down.
Mid range same thing would happen 1 2 but in 3rd gear it would all of a sudden jump into gear and take off. Same thing in high range.
Am thinking it is something to do with the clutch, throw out bearing, pressure plate ? I don't know. Any idea from what I have mentioned ?