Massey 2745 / 2805 wont' go into gear, dies with clutch

Bought it this way as "parts" for another 2745 though I"d like to approach fixing it before disounting it for dismantling.

When first arrived it seemed as if it was hydraulic as it "appeared" to shift Low-med-high, rev -- with the 24-speed hydroshift, BUT would die the second you let out the clutch. But last week - after letting it sit for several months) I climbed up into it & for some reason it started (barely to go forward .... & then heard the common "clicking" sound you"d hear as if the parking brake were engaged... & felt as though something was "bending".. then stopped solid, same as before & killed the engine. Now does exactly as it did before BUT also now it won"t shift properly with the high--low-med-rev hydroshift (moves, but off & won"t go into positive gear.

The old owner thought it was the hydraulic component that powers the hydroshift which meant splitting the engine off -- a MAJOR undertaking for this size of tractor, but with the recent test it seems more likely something has gone amiss on the shifter? (i.e. right side of the case)???? The old owner knows more about these than I do as he"s had this one apart so I"m torn between my suspicion/evaluation/ on this recent shifting thing & what he said it needed. Where should I start poking around? Many thanks for your expertise & guidance in getting started.

Matthew in Colorado

It appears to me that you have two of the packs trying to drive at the same time. I don't think it is a Hydraulic problem unless you have a problem with the shift valve. Intermediat doesn't require any hydraulic pessure to hold as this clutch is engaged by a bellville washer behind its pressure plate. When in low the multi power valve directs oil to the low pack engaging it and simultaenously directs oil to the intermediat pack releaseing it. When shifting to high the valve directs oil to the high multi disc pack engaging it and simultaenously to the inetermediat pack releasing it. In intermediate the oil is dumped from all the packs allowing the bellville washer to engage intermediat. Reverse uses the the low pack through a different set of gears when the lever is pulled rearward. What I have described is what is known as the "L" pattern. This was the later version of the transmission. The earlier tractors had an "H" pattern. Massey had a program to convert all of the "H" pattern transmissions to "L" patterns but many did not get changed. The best way to troubleshoot the hydraulics is to put three 500 lb. guages on the mutipower valve and see if it operates correctly. If you decide to do so, I can give you the procedure and the numbers. Some of these tractors were very troublesome, but when fixed properly they were quiter durable.

Tom Dold
Dold Implement
201 S. Main St.
PO Box 70
Howard, SD 57349 605-772-4541
[email protected]