JLG 120-SXJ ANSI Service Manual User Manual
Page 66
SECTION 4 - BOOM & PLATFORM
4-14
– JLG Lift –
3121105
Boom Angle Sensor Adjustment
1.
With the platform level, the boom fully retracted and
at 45 (+/- 1) degrees elevation, measure the DC
voltage at TP5 on the Load Radius Circuit Card.
2.
Loosen the three screws securing the sensor to the
box and rotate the sensor until 7.1 (+/- 0.1) Volts DC
is measured at TP5. Tighten the screws on the sen-
sor.
3.
Return the boom to horizontal.
Radius Adjustment and Display Lights
Setting Procedure
1.
On the Load Radius Circuit Card, measure TP11 and
adjust potentiometer P6 for a reading of 0.0 Volts
DC.
2.
On the Load Radius Circuit Card, measure TP8 and
adjust potentiometer P2 for a reading of 1.585 Volts
DC.
3.
On the Load Radius Circuit Card, measure TP9 and
adjust potentiometer P3 for a reading of 1.959 Volts
DC.
Figure 4-6. Boom Length/Angle Sensor Configurations
NOTE: The boom length/angle sensor is factory set and normally does not require adjusting
unless it is removed from the base boom for maintenance purposes, etc.