JLG LSS Verticals Operator Manual - Manual (Page 12)

SECTION 2 - SERVICE PROCEDURES - LOAD SENSING SYSTEM
2-4 – JLG Lift – 3124289
WHEN PERFORMING THE FOLLOWING ADJUSTMENTS - DO NOT
ADD TO THE WEIGHT IN THE PLATFORM BY ALLOWING ANY
PART OF YOUR BODY TO REST ON THE PLATFORM.
LSS Operation Function Check
After performing the adjustments outlined previously
check the following:
• Machine operates properly when loaded to 100% rated
platform capacity.
• Machine cuts out applicable functions and indicates an
overload condition when loaded to 110% rated platform
capacity.
Crossmember Positive Stop Adjustment
1. Perform the crossmember positive stop adjustment
with 120% OF MAXIMUM CAPACITY load in the plat-
form.
2. Adjust the height between the top of the positive stop
bolts (item 3) and the platform crossmember (item 1)
to 1/16 - 1/8 inch (2 to 3mm) (item 2) by loosening
the nuts (item 4) at the bottom of the bolts (item 1).
Adjust both stop bolts until the proper height is
achieved.
3. Tighten both nuts (item 4) when proper adjustment is
achieved.
Limit Switch Overload Actuator Adjustment
1. Perform the limit switch overload actuator adjustment
with 110% OF MAXIMUM CAPACITY load in the plat-
form.
2. Setup and power machine on.
3. With weight in platform, loosen the actuator lock nut
(item 1) and turn the actuator (item 2) and align with
the end of plunger on the switch (item 3).
4. Remove the limit switch cover (item 4) and use a volt/
ohm meter to watch for switch open circuit. Adjust the
actuator down until the switch contact opens. (See
Notes (a) and (b).
5. Once circuit is open, re-tighten the actuator lock nut
and replace the cover on the limit switch when com-
plete.
NOTE: (a) There is a three (3) second delay pro-
grammed into the LSS Timing Module (
Manually
Propelled Lifts) and Ground Control Module
(Driveable Vertical Lifts) between switch opening
and module activation of the LSS warning indica-
tors.
NOTE: (b) There is a 5 second RESET delay once the
limit switch circuit is closed and before the mod-
ule resumes normal machine operation.