Skyjack SJ82 T Service Manual

205
SJ82 T, SJ86 T
229040ABA
Boom Section 5 – Procedures
5.4-24 Fly-in Limit Switch (LS3)
LS3 limits machine drive speed to 1/2 mph (0.8 km/h)
when the boom is extended.
LS3 is normally closed. A slotted hole in the mid
boom trips the switch as the boom extends.
LS3 is the lower limit switch on the platform end of the
main boom.
M62351AA
LS3 location on main boom
NOTE
Make sure the switch roller rotates freely and the
switch arm is free to move as the boom extends
and retracts.
M62364AA
Limit switch arm and roller
WARNING
Ensure there are no personnel or obstructions
in the test area and there is sufficient room to
reposition the boom.
Check Switch Operation:
1. Retract the boom fully.
2. Place the boom in a horizontal position (or
slightly less than 0°).
3. Extend the boom outwards 4 ft (1.2 m). At
this point, the limit switch has tripped and the
contacts should be open.
4. Locate the terminal strip inside the base control
panel. Set the multi-meter to continuity-check
mode.
5. Place the multi-meter probes on terminal
positions (59 black/white) and (29 black).
6. Verify the switch circuit is open and there is no
continuity.
Black/WhiteBlack
29 59 M62352AA
29
59
LS3 terminal connections
7. Retract the boom. Verify there now is continuity
in the circuit.
8. Extend and retract the boom to check switch
operation. The circuit should open and close
when the switch roller passes through the
slotted hole in the mid boom.
9. Perform a test drive to verify the machine drive
speed is slowed with the boom extended.
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Skyjack SJ82 T Specifications

General

Brand	Skyjack
Model	SJ82 T
Category	Boom Lifts
Language	English