Skyjack SJ 3220, Service Manual

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SJ3220, SJ3226, SJ4720, SJ4726, SJ4732 223198ABA
Base Section 5 – Procedures
5.3-3 Pothole Limit Switches (LS1 & LS2)
Replacement and Adjustment
Machine Preparation
1.
Park the MEWP on a firm level surface.
2.
Chock or block the wheels so the MEWP does not
roll forward or backward.
Remove the Limit Switches
1.
Raise the platform until the pothole bars are
deployed.
2.
Swing out the hydraulic tray and the battery tray
to gain access to the pothole limit switches below
the base.
3.
Remove the bolts, washers and nuts (x2)
that secure the limit switches to the pothole
lock plates. Set the hardware aside for later
reinstallation.
4.
Remove the bolts and washers (x2) that secure
the lock plates to the base. Set the hardware
aside for later reinstallation.
5.
Remove the limit switches and free the limit switch
cables. Cut tie wraps as necessary.
6.
Follow the cable into the main harness.
7.
Disconnect the limit switch wires from the main
harness. Discard the limit switches.
Replace the Limit Switches
1.
Install the new limit switches (210227 - Battery
Tray & 210226 - Hydraulic Tray) to the lock plates
using the hardware removed previously.
2.
Make sure the distance between bottom of the
limit switches and the top surface of the lock
plates are 4.13 cm (1-5/8").
4.13 cm
1-5/8”
3.
Make sure the limit switches are parallel with the
edge of the lock plates.
4.
Tighten the hardware on the limit switches before
reinstalling the lock plates to the base.
Connect Limit Switch Wires
1.
Route the new limit switch cable(s) along the
same path as the old one(s) to the main harness.
Secure the cables using tie wraps at regular
intervals.
2.
Plug the spade connectors into the same wire
numbers. The #72 wires from each limit switch
connects to each other. The #71 and #901 wires
from the limit switches connect to the respective
wires on the main harness.