Massey 6290 dynashift no B or D light

[3cpowertrain]

Hi can anyone help we have a Massey 6290 dynashift and we have several issues..
Orange waning light comes on
Main pressure light continually on.
No B or D lights on on the dynashift display
No speed shift hi lo lights on..
I Have preside tested the low circuit and there is a pressure drop of 100 psi with the 4wd disengaged so obviously a pressure lose in the pack and the 4wd is engaged all the time and information would be greatly appreciated

 

[masseybreaker]

oil pressure holds it in 2wd so i would look into that most likely the slip rings on the end of the shaft are worn take the circlip of the end of the shaft and pull but drain the oil first

 

[J428TGS]

the lights not working could well be the bulbs, do you feel/ hear the dyna shifting when driving or sitting