JLG 4394RT Service Manual - Manual (Page 38)

SECTION 3 - CHASSIS & SCISSOR ARMS
3-2 – JLG Sizzor – 3121133
3.2 CALIBRATIONS
Elevation Sensor Calibration
(Prior to Software P1.20)
NOTE: Make sure your analyzer is in ACCESS LEVEL 1.
When using the analyzer, under the DIAGNOSTIC
menu the term referring to ROTARY & PROXIMITY
sensors is ELEV SENSOR.
Use CALIBRATIONS menu for rotary switch adjust-
ments.
1. When mounting, make sure the rotary switch is
aligned with the bladed pin mounted on the center
link as shown in Figure 3-1., Limit Switch Location.
There must be a preload when installing the rotary
switch on the bladed pin bracket.
2. There are (3) mounting screws that hold the switch
onto the center link mounting lug, make sure they
are snug, not loose, so you are able to rotate the
rotary switch.
3. Make sure the deck is fully lowered. Plug in the ana-
lyzer and enter the service password (33271).
4. Go to CALIBRATIONS, then SET ELEV SENSOR and
hit enter then right arrow.
5. The bottom line on the analyzer display will show the
range of voltage the sensor must be within for
proper calibration. the actual voltage is displayed on
the bottom line to the right as shown.
1
2
Figure 3-1. Limit Switch Location
1. Proximity Sensor
2. Rotary Angle Sensor
set elev sensor:
0.50v-1.0v x-xxv