Ec14 dozer blade not moving properly

[bigmike]

Hi , older ec14 (2002) . Lever for dozer blade has been getting more stiff to use lately. I've had the steel floor plate up and washed / poked all the muck out of the way where the cable joins the valve.
Working better now ,powering up , but doesnt power down . It just seems to drop to ground level due to gravity.
Any advice on where to look next for a solution ?
Thanks Mike

[Muz]

Be leaking seals either in the ram or the orbital valve in the centre of the machine

[bigmike]

Presume I can check it's getting pressure to the ram by slacking off a pipe fitting on the ram and pressuring that pipe ?

[bigmike]

It's got worse... not moving at all. But if I leave it overnight the blade is on the floor. If I push the bucket down and tip the machine up , with blade at the opposite end , the blade goes up.. let the machine down and off I can go..
lever is very stiff.... could the valve be stuck ?
cheers Mike