JLG E300 Service Manual - Manual (Page 56)

SECTION 3 - CHASSIS & TURNTABLE
3-22 – JLG Lift – 3120772
3.5 SPEED SENSOR ADJUSTMENT
FOR PROPER DRIVE OPERATION, THE SPEED SENSORS (2)
MUST BE PROPERLY INSTALLED AND ADJUSTED. THE SENSOR
OPERATES ON A LEADING PULSE TO SHOW DIRECTION. IF
INSTALLED INCORRECTLY, THE SENSOR WILL NOT BE ABLE TO
SENSE THE PROPER DIRECTION. IF BOTH SENSORS ARE
INSTALLED INCORRECTLY, THE JLG CONTROL SYSTEM WILL
THINK THE MACHINE IS ON A HILL AND THE MACHINE WILL GO
INTO FULL SPEED MODE IMMEDIATELY. IF ONLY ONE SENSOR IS
INSTALLED WRONG, THE CONTROLLER SENSES A PROBLEM
AND THE MACHINE WILL ONLY DRIVE AT CREEP SPEED. IF BOTH
SENSORS ARE ADJUSTED TOO FAR OUT, THE CONTROL SYSTEM
WILL NOT DRIVE THE MACHINE.
Adjustment Procedure
1. Back off the locking nut and o-ring.
2. Thread the sensor in to bottom. (do not force).
3. Back-off 1-2 turns and align the notch with the axis
of the brake
4. Use a 1/2” wrench to hold the sensor and a 3/4”
wrench to snug the lock nut to the brake.
3.6 POSITRAC/TILT MODULE
When installing a new positrac/tilt module, Refer to
JLG Control System Analyzer Kit instructions. Use a
standard bubble level in two different directions to
ensure that the machine’s frame is level prior to install-
ing the new positrac/tilt module.
1. Place the machine on a flat, level surface. Check for
level by placing a bubble level on the frame in both
directions.
2. Plug in the analyzer (Analyzer - p/n 1600244, Cable -
p/n 1600633) into port J9 on the power module or
port J1 on the platform module.
3. Use the right arrow key to curse over to “ACCESS
LEVEL 2". Depress Enter.
4. Use Up/Down arrow keys to enter the following
password “33271”. Depress Enter.
5. Use the right arrow key to curse over to “LEVEL
VEHICLE”. Hit Enter. Depress Enter again.
6. Verify that the tilt reading is now “0.0; 0.0".
TO ASSURE PROPER OPERATION, THE MACHINE MUST BE LEVEL
WHEN ADJUSTING OR INSTALLING AND CALIBRATING A NEW
POSITRAC/TILT MODULE