"2033ES / 2633ES" Service & Parts Manual - ANSI Specifications October 2008
Page 4-5
Setting Counterbalance Valves
♦ Before attempting to check and/or adjust counterbalance valves, operate the machine for
15 minutes or long enough to sufficiently warm the hydraulic fluid.
♦ Insert a 0-1000 psi gauge onto the pressure test port on the valve manifold using gauge
adapter fitting MEC part no. 8434
Check and Adjust Pressure (counterbalance)
If adjustment is required, set pressure to the correct setting as follows:
♦ Open the freewheel valve (NV1) completely.
♦ Operate drive in either direction.
♦ Hold the switch for 10 seconds to get an accurate reading on the pressure gauge.
Early Models
♦ Loosen the jam nut.
♦ Turn “counterclockwise” to increase the pressure.
♦ Turn “clockwise” to decrease the pressure.
Current Models
♦ Using pliers or other gripping tool,
carefully
remove the tamper proof cap.
♦ Turn adjustment screw “IN” to increase the pressure.
♦ Turn adjustment screw “OUT” to decrease the pressure.
♦ When correct pressure is obtained replace tamper proof cap with a new one.
To Next Page
Loading...
