JLG 1350SJP Service Manual - Manual (Page 443)

SECTION 6 - JLG CONTROL SYSTEM
3121142 – JLG Lift – 6-67
6.19 CALIBRATING THE BOOM SENSORS
DURING THE BOOM SENSOR CALIBRATION PROCEDURE, IT IS NORMAL FOR
THE REAR WHEEL TO LIFT FROM THE GROUND APPROXIMATELY 1 INCH (2.5
CM). IF THE WHEEL RAISES APPRECIABLY MORE THAN THIS (I.E. 4 INCHES [10
CM] OR MORE), CHECK THE AXLE OSCILLATION SYSTEM FOR PROPER OPERA-
TION OR THE NEED FOR BLEEDING, THEN PROCEED WITH THE BOOM SENSOR
CALIBRATION PROCEDURE.
Use the following step-by-step procedure to calibrate the
boom sensors.
1. Before the boom sensors can be calibrated, the follow-
ing conditions must be met:
a. Steering, telescope crack points, and tilt previously
calibrated
b. Axles Extended
c. Wheels Straight
d. Platform Unloaded
e. Jib Horizontal
f. Jib Swing Centered
g. Platform Level
h. Platform Centered
i. Turntable Centered
j. Boom Fully Retracted
k. Level Ground (within 1.5°)
2. Position the Platform/Ground select switch to the
Ground position.
3. Plug the analyzer into the connector inside the Ground
control box.
4. Pull out the Emergency Stop switch and start the
engine.
Figure 6-14. Boom Sensor Calibration Position 1