JLG LSS Verticals Operator Manual - Manual (Page 10)

SECTION 2 - SERVICE PROCEDURES - LOAD SENSING SYSTEM
2-2 – JLG Lift – 3124289
2.2 LSS - SETUP AND ADJUSTMENT
Procedure Overview (All Vertical Lifts)
The mechanical portion of the LSS system requires three
(3) adjustments to operate properly.
• Platform Crossmember/Coil Spring Pre-load Height
Adjustment; sets the coil spring pre-load between the
platform and mast crossmember with no load in the
platform.
• Mast Header Crossmember Positive Stop Adjust-
ment; sets the maximum amount of downward travel of
the platform, if the platform is overloaded.
• LSS Overload Actuator Adjustment; sets the actuator
to trip the LSS limit switch, signaling an overload situa-
tion, when the platform is overloaded. There is a three
(3) second delay between switch opening and warning
activation.
THESE SETUP PROCEDURES WILL REQUIRE ACCURATELY
MEASURED WEIGHT UP TO AND OF A PERCENTAGE OVER THE
PLATFORM’S MAXIMUM CAPACITY. SEE TABLE 2-1 IN THE FOL-
LOWING SUB-SECTION.
Figure 2-2. Load Sensing System - Indicators
(Drivable Vertical Lifts)
1. Ground Control Module 3. LSS Warning Lamp
2. LSS Warning Decal
4. LSS Warning Alarm
Figure 2-3. Platform Console LED Indicators
(Drivable Vertical Lifts)
1. The platform console LED bar will flash 9 (Nine) LEDs
to indicate a Platform Overload condition.
–+
Figure 2-4. LSS Component Adjustments
1. Coil Spring Pre-Load Height Adjustment
2. Crossmember Positive Stop Adjustment
3. Overload Actuator Adjustment
Notes: Shown with manual storage box removed and
with little or no load in the platform.