Service Manual Instruction Manual

SECTION 6 - JLG CONTROL SYSTEM
3121171 – JLG Lift – 6-61
The Control System will disable all functions except auto
platform level and main lift up. The Control System will
energize tower tele out with the main lift up command.
The analyzer will display “CAL FAILED” and “TWR NOT
OUT” if movement of either tower length sensors is
detected.
2. After pressing the ENTER key , the analyzer will dis-
play “CALIBRATING…”on the bottom line and record
right main boom max angle, left main boom max angle.
The main boom max angle will be set at 145.0 (ref
tower). The right main boom angle sensor reading must
be within 155 and 175 and the left main boom angle
sensor reading must be within 5 and 25 or “CAL
FAILED” and “MAIN ANGL1 FAULT” or “MAIN ANGL2
FAULT” will be displayed. The Control System will calcu-
late and verify the precise main boom angle reading at
main boom transport angle switch trip (from position 2)
to be 15.8+6.0/-3.0, otherwise the analyzer will dis-
play “CAL FAILED” and “MAIN A SW FAULT”
Step 7 - Position 7
1. After completing the previous step, the analyzer will
read:
The Control System will disable all functions except auto
platform level and tower tele in. The Control System will
energize main lift up with the tower tele in command.
The analyzer will display “CAL FAILED” and “MAIN NOT
UP” if movement of either main angle sensors is
detected. The Control System will monitor and record
the tower tele in crack point at which the control system
detects movement of the tower length sensors (if
required).