Page 23
MMAE16 - Servce & Parts Manual
Aprl 2022
Secton 10 - Mantenance
the platform to approximately 2.1 feet or 0.65 meters.
Result:
The LED readout screen shows code LL, an alarm sounds, and the machine stops
lifting after the pothole guards are deployed. The machine is functioning properly.
Result:
The LED readout screen does not show code LL, 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 LED readout screen shows code LL, an alarm sounds, and the machine will not
steer or drive. The machine is functioning properly.
Result:
The LED readout screen does not show code LL, the alarm does not sound and the
steer and drive functions operate. Adjust or replace the level sensor.
Pothole Limit Switches
Lower the platform to the stowed position. Move the machine onto a firm, level surface.
Place a wooden block approximately 1.9 inches or 5 cm tall under the right pothole guard.
Press the lift function select button. Attempt to raise the platform approximately 2.1 feet or 0.65
meters.
Result:
The pothole guard contacts the block and does not fully deploy, the LED readout
screen shows code 18, an alarm sounds and the platform will lift to 2.1 feet or 0.65 meters or
beyond. The machine is functioning properly.
Result:
The pothole guard contacts the block and does not fully deploy, the LED readout
screen 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 LED readout screen shows code 18, an alarm sounds, and the machine will not
steer or drive. The machine is functioning properly.
Result:
The LED readout screen 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 8 for the left pothole guard.
Lower the platform to the stowed position, remove the block under the left pothole guard.
Turn off the machine.
13) Tension the Lifting Chains
Tools will be required to perform this procedure.
New parts will be required to perform this procedure.
Dealer service will be required to perform this procedure.
Tension chains are essential to good machine performance and safe operation.
The direct result of wearing the transmission chain is to stretch the total length of the chain. Measure
the stretching rate of the used transmission chain by eye every three months. The mast connected
to the elongated chain would be lower in position so that the top of each mast is obviously uneven in
‘stored’ position. It may lead to damage on guide roller if the problem is serious.
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