JLG 1250AJP Service Manual - Manual (Page 405)

SECTION 5 - HYDRAULICS
3121171 – JLG Lift – 5-51
5. When the operator enters access code 146005,
"SET PRESSURES" will be displayed on the top line
and current sub-menu on the bottom line. The sub-
menus will scroll with the left and right arrow keys.
6. Pressure setting sub-menus will include the follow-
ing:
• "MAIN LIFT?"
• "TWR LIFT?"
• "TWR TELE?"
7. When the operator presses the ENTER key, "SET
PRESSURES" will be displayed on the top line of the
analyzer and the bottom line will display the follow-
ing: "WARNING" flashed on a 0.5 hertz rate for 3
cycles followed by the scrolling of "MOVEMENT
POSSIBLE". This flashing and scrolling will repeat
until the ENTER key is pressed.
8. When the operator pressed the ENTER key, the con-
troller will display "SET PRESSURE" on the top line,
"MAIN LIFT" or "TWR LIFT" or "TWR TELE" on the
bottom line and will allow operation of the selected
submenu function with the enable valve closed. If
movement of any of the three functions is detected,
the controller will display "SERVICE FAILED" on the
top line and "VALVE FAULT" on the bottom line as
shown below.
9. Pressing the ESCAPE or the ENTER key once will
revert back to the pressure setting sub-menus
("MAIN LIFT", "TWR LIFT", "TWR TELE").
10. Select the PVG function then use the toggle
switches at ground control to energize function.
Pressure should be:
• Main Lift UP - 2755 to 3088 psi (190 to 213 Bar)
• Main Lift DN - 2755 to 3088 psi (190 to 213 Bar)
• Tower lift UP - 2755 to 3088 psi (190 to 213 Bar)
• Tower Lift DN - 2755 to 3088 psi (190 to 213 Bar)
• Tower Tele OUT - 2537 to 2871 psi (175 to 198 Bar)
• Tower Tele IN - 2537 to 2871 psi (175 to 198 Bar)