450b tranny trouble

[mikebus]

any suggestions as to why it would pull and shift great till it warms up then stops pulling i let it cool down pulls till it warms up

[digitup2]

Chances are the shaft seals on the clutch packs are shot when the oil warms up the viscosity is lighter and the seals leak more letting the piston back off .Also the center shaft seal could be damaged as well letting the plates slip .Be prepaired to rebuild the clutch packs and don't run it too much like this .Digitup.