Mec 4046SE - Page 35

Page 30 SE
AC
Slab Series - Service & Parts Manual
March 2022Section 10 - Maintenance
Level Sensor
Move the machine onto a grade which exceeds the rating of the level sensor. Refer to the
Machine Specifications in the Introduction portion of this manual.
Press the lift function select button. Standing on the up-hill side of the machine, attempt to raise
the platform to approximately 6.6 ft / 2 m.
Result: The alarm sounds, and the machine stops lifting after the pothole guards are
deployed. The machine is functioning properly.
Result: The alarm does not sound and the machine will continue to lift the platform after the
pothole guards are deployed. Adjust or replace the Level Sensor.
Press the drive function select button. Standing on the up-hill side of the machine, attempt to
steer and drive the machine.
Result: The alarm sounds and the machine stops moving. The machine is functioning
properly.
Result: The alarm does not sound. Adjust or replace the Level Sensor.
Lower the platform to the stowed position.
Pothole Limit Switches
Move the machine onto a firm, level surface. Place a wooden block approximately 2 in / 5 cm tall
under the right pothole guard.
Press the lift function select button. Attempt to raise the platform approximately 6.6 ft /2 m.
Result: The pothole guard contacts the block and does not fully deploy, the diagnostic
display shows code 18, an alarm sounds and the platform will lift to 6.6 ft / 2m or beyond.
The machine is functioning properly.
Result: The pothole guard contacts the block and does not fully deploy, the diagnostic
display does not show code 18, the alarm does not sound and the machine will continue
to lift the platform after the pothole guards are deployed. Adjust or replace the pothole limit
switch.
Press the drive function select button. Attempt to steer or drive the machine.
Result: The diagnostic display shows code 18, an alarm sounds, and the machine will not
steer or drive. The machine is functioning properly.
Result: The diagnostic display does not show code 18, the alarm does not sound and the
steer and drive functions operate. Adjust or replace the down limit switch.
Lower the platform to the stowed position and remove the block under the right pothole guard.
Repeat this procedure beginning with step 5 for the left pothole guard.
Lower the platform to the stowed position, remove the block under the left pothole guard. Turn
off the machine.
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