B7200HSTD transmission shot-replaceable by novice?

[ram042400]

MY B7200 is now experiencing issues moving. Loader hydraulics are fine, will pick the front of the tractor up at idle with the B1640 loader. Can't get up the smallest inclines in high, especially after it is warmed up. I took it to my local dealer and pressure tested the transmission. The charge pump was good at 80lbs at half throttle. The forward direction port was only hitting 1800lbs upon initial forward momentum, and then dropping down to about 1000 while moving on level ground. Should be about 3800lbs I was told. We switched the reverse and forward relief valves w/ the same outcome. Anways, I've been told, I need a new tranny, as I guess, the most likely issue is that the internals are not sealing against some plate and maintaining a tight seal to build pressure.
I'm not anxious to pay the dealer's hourly shop rate, to swap the tranny's, and I am contemplating doing it myself. They were quoting me about three days of labor. I do have a good mechanical ability(I believe anyways), just wondering if this is doable w/ that, or if a specialist/knowledgeable person is actually necessary. I am a novice to hydraulics through. Looks pretty cut and dry as far as unbolting and separating and putting back together. Does anybody know if I have to separate from the clutch area back or does it come out from the back, keeping the main frame area attached to the front of the tractor?
I just am not in the market right now for a newer tractor.
Any words of encouragement or advice? Thanks in advance,
Rick

 

[ram042400]

T.T.T. Looking for advice on if I need to pull the clutch end or can that stay attached and just disconnect the drive shaft/prop shaft and go out the back of the tractor?

 

[eserv]

No need to split it at the clutch, the HST linkage is a bit troublesome but it isn't very hard to change the hydro . Be sure to clean BOTH suction screens and don't bend any lines. pour oil down into the hydro through the filter boss before you install the hst filter to ensure it gets some initial lubrication. The roll pins on the two drive shafts are probably the hardest thing to do. Be sure to install new ones when you put it together and put some type of anti-seize compound on those splines. the ball coupler on the front of the hydro should get some attention to. When you reassemble the tractor try to get the drive shaft to the front axle properly "phased". It will run no matter how you assemble it but it'll run a lot smoother if the joints are in harmony! http://www.custompistols.com/cars/articles/ts_ujoints.htm
Ed

 

[ram042400]

Thanks for the reply and info.