Skyjack SJ 3220, Service Manual

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SJ3220, SJ3226, SJ4720, SJ4726, SJ4732 223198ABA
Section 5 – Procedures Base
Adjust the Limit Switches
1.
Install loosely the lock plates to the base using
the hardware removed previously.
2.
Use the slotted holes in the lock plates to move
them back and forth until the limit switch plungers
are barely touching the compression rods. Make
sure the plungers are not pushed in.
3.
Tighten the hardware to secure the lock plates
to the base. Make sure the limit switches do not
move while you tighten the bolts and the plunger
roller’s retaining pins are fully visible.
Test the Limit Switches
1.
Place a block, approximat ely 3.75 cm (1-1/2”),
under the hydraulic tray and raise the platform to
an approximate height of
2 to 3 meters (7 to 10
feet) until the pothole protection limit switches are
activated.
2.
Select “Diagnostics” menu on the display module
and scroll to the “Inputs” menu. Scroll to P4-7 to
observe the pothole limit switch status. Make sure
the I/O is correct.
▪
ON when the pothole protection is on a block
▪
OFF when the pothole protection is fully
lowered.
3.
Attempt to drive forward or reverse. The MEWP
should not move forward or backward when
pothole protection is on a block.