MX3657-01 Rev. D ©2020 General Maintenance
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Brake Valve Adjustments
Proper adjustment of the brake valves is important for smooth operation of the gate.
See Adjusting Brake Valve on page 44.
Pressure Relief Valve Adjustments
The Pressure Relief Valve governs the maximum system hydraulic pressure. It is located on the backside of the
pump. The pressure relief valve is factory set and may need to be adjusted depending on the gate weight.
See Adjust Pressure Relief Valve on page 44 or refer to the yellow tag wire tied to the unit and follow the
instructions.
Open Valve
The open valve is solenoid operated and, when energized, directs the hydraulic ow to open the gate. No
adjustment of this valve is possible or necessary. The black solenoid coil mounts on its valve stem.
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