Base; System Relief Pressure Adjustment - Skyjack SJ3220 Service Manual

Base

5.3 Base

5.3-1 System Relief Pressure Adjustment

1. Locate the system pressure fitting or quick
disconnect port on the main manifold.
2. Install a calibrated 5000 psi gauge to the system
pressure fitting or quick disconnect port.
3. At the main manifold, loosen the locknut on the
system relief valve R1.
4. Remove black #14 wire from the lift coil 3H-14.
5. Turn the base/off/platform key switch to platform
position.
6. Select lift with the lift/drive select switch on the
platform control console.
7. Engage lift with the joystick and hold.
8. Observe reading on gauge. Adjust the R1
system relief value listed on the serial number
plate. Turning the stem on the relief valve
clockwise will increases pressure. Turning the
stem counterclockwise will decreases pressure.
9. Release lift function and tighten the locknut.
10. Reconnect #14 wire onto the lift coil 3H-14.
11. Remove the gauge from system pressure test
port.
R2
R1
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732
3H-14
#14 Wire
Test Port
Section 5 – Procedures
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