JLG 120HX Service Manual - Manual (Page 73)

SECTION 2 - PROCEDURES
3120819 – JLG Lift – 2-51
f. If after operating SWING function as described
in step (d), the platform stops moving to the left
and the spring action of the boom tends to ini-
tiate the swing right motion before the control
valve starts to operate, the ramp pot adjust
screw should be rotated counterclockwise to
decrease ramp time.
g. Repeat the test in both swing directions.
h. Release footswitch and stop machine.
i. Seal ramp pot adjustment screw with a drop of
enamel paint to prevent maladjustment due to
vibration.
j. Install controller and secure machine.
2.24 BOOM MARKING TAPE INSTALLATION
Boom marking tape installation is shown in Figure 2-24.
2.25 BOOM LENGTH/ANGLE SENSOR
ADJUSTING PROCEDURE
NOTE: The boom length and angle sensor adjustments
need to be made before the display lights are
adjusted.
The boom length and angle sensor is factory set and
does not normally require adjusting unless it is
removed from the base boom for maintenance.
Figure 2-24. Boom Marking Tape Installation