Service Manual Instruction Manual

SECTION 6 - JLG CONTROL SYSTEM
6-62 – JLG Lift – 3121171
2. After pressing the ENTER key , the Control System
will verify the measured length of the tower boom
matches the expected length of 305.4” +/- 0.5”, other-
wise, the analyzer will display “CAL FAILED” on the top
line and “TWR IN TO MIN” on the bottom line each time
the ENTER key is pressed and the measured
length does not match the expected length.
Step 8 - Position 8
1. After completing the previous step, the analyzer will
read:
The Control System will disable all functions except auto
platform level and tower lift up and down. The Control
System will monitor and record the tower lift down crack
point at which the control system detects movement of
the cylinder angle sensor (if required). When tower lift is
commanded, the tower cylinder angle will be controlled
to target angle of 74.6 +/-0.5 (relative to the turntable).
When the target angle is reached the Control System
will disable tower lift up and down. If the tower angle
(ref. To gravity) gets below 66 disable tower lift down
and display “CAL FAILED” and “TOWER TOO LOW” on the
analyzer.