JLG 4017PS Service Manual - Manual (Page 200)

Electrical System
9-42 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
9.16 LOAD STABILITY INDICATOR (LSI)
(CE & AUS)
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 the
local JLG dealer.
The LSI (9) provides visual and audible indication of
forward stability limitations when machine is static on
firm, level surface.
• Green LED (10) will illuminate when LSI power is on.
• When approaching forward stability limitations LEDs
progressively illuminate, green (11), then orange
(12) and finally red (13).
• If the red LED iluminates, the warning buzzer also
sounds.
The LSI has two modes:
Active Mode (3706PS, 3707PS, 4014PS, 4017PS,
33.7, 37.6 & 37.7)
• As the telehandler reaches forward stability
limitations and the red LED (13) illuminates, the
automatic function cut-out is activated. All boom,
frame level and outrigger functions are disabled
except boom retract (CE & AUS) and boom lift (CE).
Retract boom to fully 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 (3706PS, 3707PS, 33.7, 37.6 & 37.7)
• The orange LED (15) 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.
• Travel in accordance with the requirements set forth
in Section 1 - General Safety Practices.
• When placing a load, ensure axles are not fully
steered in either direction.
• Test the LSI (14) 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 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.
MAM2850
9
15
14
11 12
10
13
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.