I have a Bil-Jax ESP19 that will only steer in one direction. Everything else on the machine works good. The motor comes on but it doesnt turn to the right only the left. I disconnected one of the lines to the hydraulic ram so the fluid could come out and turned the wheels all the way to the left then reconnected the line and it steered to the right when the button was pushed but wont turn back to the other direction. It has 4500 hrs on it. 24V electric.