Hydraulic System; System Pressure Adjustment - Skyjack SJ12 E Service Manual

Section 5 – Procedures

5.4 Hydraulic System

5.4-1 System Pressure Adjustment

1. Remove the control box from the platform
control box mount and bring it down to the
ground.
2. Pull the deck all the way out into the service
position.
3. Unlatch and open the service access door.
4. Locate the test port on the power pack manifold.
Remove the cap.
5. Connect a 350 bar (5000 psi) pressure gauge to
the test port.
241914ACA
100
6. Loosen the locknut on system relief valve RV1.
7. Disconnect the black wire 14 from the 3H-14 coil
on SV1.
8. Move the Lift/Drive switch on the platform control
box to the lift position.
9. Lift and hold the diagnostic switch in the up
position.
10. Squeeze the enable switch on the joystick then
move the joystick all the way forward and hold it
there.
Hydraulic System
SJ12 E, SJ16 E, SJ20 E