SkyRider 15
4-6
Pressure Relief Valve Adjustment
Perform the following procedure to adjust the pressure relief valve. Refer to Figure 4-5.
1. Move the SkyRider lift platform to the fully
DOWN position.
2. Center 500 pounds of weight on the lift platform.
3. Remove the hex cover from the pressure relief valve. The pressure relief valve
is on the back side of the pump.
4. Turn the pressure relief valve adjust screw 1/8
th
turn counterclockwise. This will
adjust the relief valve bypass pressure setting for less than 500 pounds of lift.
5. Place the key switch in the
LOWER CONTROL position and press the UP pushbut-
ton. The pump should run, bypassing oil to the hydraulic reservoir.
CAUTION
Do not adjust the pressure relief valve for a bypass pressure higher than needed to
raise the 500 pound load. Hydraulic system overload may occur at a higher bypass
pressure, causing hydraulic failures or damage to the equipment.
6. With the platform lift function enabled (pump running), turn the pressure relief
valve adjust screw clockwise just enough to smoothly raise the platform without
bypassing oil to the hydraulic reservoir.
7. Reinstall the hex cover over the pressure relief valve.
Figure 4-5. Pressure Relief Valve Adjustment
