JLG 723A Service Manual - Manual (Page 152)

Electrical System
9.44 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
9.16 LOAD STABILITY INDICATOR - LSI
L2906H, 2906H, 3507H, 29.6LP, 29.6 &
35.7 (S/N 1160005993 & After
including 1160005943, 1160005945 &
1160005414)
9.16.1 Load Stability Indicator
Note: The Load Stability Indicator is NOT a serviceable
item. The LSI must be inspected and/or replaced by a
qualified dealer or a JLG technician.
The LSI provides visual and audible indication of forward
stability limitations when machine is static on firm, level
surface.
• Green LED (1) will illuminate when LSI power is on.
• When approaching forward stability limitations LEDs
progressively illuminate, green (2), then orange (3)
and finally red (4).
• If the red LED illuminates the warning buzzer also
sounds.
The LSI has two modes:
Active Mode
• As the telehandler reaches forward stability
limitations and the red LED (4) illuminates, the
automatic function cut-out is activated. All boom,
frame level and outrigger functions are disabled
except for boom retract (CE & AUS) and boom lift
(CE). Retract boom to re-enable functions.
• In some instances the LSI system may slow down
or stop boom functions if operated close to
forward stability limitations. When LEDs begin to
flash, certain functions can not be operated.
Retract boom and/or return the joystick to neutral
position for a short period to allow system to reset
and LEDs to stop flashing before proceeding with
operation.
Passive Mode
• The orange LED (6) illuminates when either of the
following occurs:
• The boom is fully retracted.
• The park brake is not applied and transmission
control lever is in the forward or reverse
position.
• When approaching forward stability limitations,
visual and audible indication is provided and the
automatic function cut-out and/or slow down
feature is disabled.
Test the LSI at the beginning of each work shift.
1. Fully retract and level the boom, with no load. Do not
raise the boom during this test.
2. Level frame using level in cab.
3. Press the system check button (5) on the LSI
display. This will cause all LEDs to flash on and an
audible warning to sound. This indicates that the
system is functioning properly. If the test gives a
different result, the system is not functioning
properly and the machine must be removed from
service and repaired before continued operation.
WARNING
TIP OVER HAZARD. The LSI considers only
longitudinal stability limitations, observe all operating
parameters. Failure to follow operating parameters of
the telehandler could damage the equipment and/or
cause tip over.
MZ5981
4
3
2
5 1
6
WARNING
TIP OVER HAZARD. If the green, orange and red
LEDs flash and warning buzzer sounds, retract and
lower boom immediately. Determine cause and
correct before continued use.