Hi all I am new to Forklift action. I have an issue with one of the lifts that I have started servicing. It is a Taylor M#Y17-WOF S#S-21-13756. The brakes are in good shape but the power assist from the Hydrualics is causing them to hesitate and then you can hear the pressure build up just before they grab. This unit has an Accumulator for the brakes that I found had lost the pressure on the bladder Nitrogen side. I refilled it with Nitrogen and it worked just fine for about a month, when it started acting up again I checked it I found the nitrogen had leaked past the bladder. So I replaced the Accumulator and checked to make sure it had enough pressure (450psi). But the unit is still doing the same thing. Do I need more pressure or is it something in the Hydrualic system. When you press down on the brake pedal you hear a hissing sound under the control valve and then the brakes finally grab.
Any suggestions would be very welcome thanks