JLG 2632R Page 142 Service Maintenance Manual Download

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SECTION 6 - LSS (LOAD SENSING SYSTEM) SERVICE

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6-7

LSS Verification

NOTE:

Perform this verification procedure annually to con-
firm LSS is functioning properly.

The following procedure should be executed to verify
LSS. Verification is a time-saving and effective diagnos-
tic alternative to calibration at maintenance intervals.
Refer to the troubleshooting section of this manual if
the Load Sensing System fails to meet these guidelines.

1. Ensure the platform is empty.

2. Initiate verification using the CALIBRATIONS ' VERIFY

menu.

3. Lift up to maximum elevation using the ground con-

trols when the LIFT TO MAX ELEV prompt appears.

4. Lift down to the stowed position using the ground

controls when the LOWER TO STOWED prompt
appears.

5. If successful, the Analyzer will display the COMPLETE

prompt. Press ESC to return to the top level menu.

6. If unsuccessful, the LSS - OUT OF CALIBRATION (8217)

fault will be triggered and the LSS should be re-cali-
brated. Press ESC to return to the top level menu.

Partial Height Calibration

The machine can be calibrated to only reach a certain
elevation when the machine is at maximum height.

To perform this calibration, ensure the platform is
empty, the machine is parked on level ground, and the
platform is in the stowed position.

1. Attach the Analyzer at the ground controls.

2. Go to Access Level 1, then scroll to the CALIBRATIONS

LOAD 0% menu.

3. Lift up to desired maximum elevation using the

ground controls when the LIFT TO MAX ELEV prompt
appears.

4. Lift down to the stowed position using the ground

controls when the LOWER TO STOWED prompt
appears.

5. If successful, the Analyzer will display the COMPLETE

prompt. If unsuccessful, a message will be displayed
that will help lead to a resolution (refer to the Trou-
bleshooting section of this manual). Press ESC to
return to the top level menu.

6. Ensure the new maximum height has been set by

running a lift up/lift down cycle.

7. Repeat steps 1 through 8 for Loaded Platform (Load

110%) calibration.

NOTE:

To recalibrate the machine to reach full elevation,
perform the Empty Platform (Load 0%) and Loaded
Platform (Load 110%) Calibration. Allow the
machine to reach full elevation.

6.5

TESTING

The following procedure should be executed to test LSS.
The test confirms the LSS does not trigger when the
platform carries 100% rated load, and the LSS continu-
ously triggers when the platform carries 120% rated
load. Refer to the troubleshooting section of this man-
ual if the Load Sensing System fails to meet these guide-
lines.

1. Connect the JLG Analyzer to the diagnostic port in

the wire harness and enter the Access Level 1 pass-
word.

2. Note the current setting of MACHINE SETUP ' LOAD

and then adjust it to CUTOUT ALL. This will allow LSS
interlocks to work from Ground Mode.

3. Place weight corresponding to 100% of the vehicle's

rated load in the center of the platform. Refer to the
LSS Testing Weight Table below.

4. Lift up to maximum elevation using the ground con-

trols. LSS should not prevent motion and the Ground
Overload Indicator should not illuminate.

5. Lift down to the stowed position using the ground

control. LSS should not prevent motion and the
Ground Overload Indicator should not illuminate.

6. Place weight corresponding to 120% of the vehicle's

rated load in the center of the platform. Refer to the
LSS Testing Weight Table above.