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Boom
5.4-21 Limit Switch Checking and
Adjusting
There are six limit switches on the SJ82 T and SJ86 T
machines. Use the following procedures to check and
adjust them.
Preparation:
Park the machine on a flat, level surface.
▪
Provide enough room around the machine for
▪
lifting / swinging the boom and driving.
LS3
LS5
4
5
1
2
3
Side View of
Boom and Turret
1. Fly Boom Section
2. Mid Boom Section
3. Main Boom Section
4. Fly-in Limit Switch (LS3)
5. Boom Extension (dual load) Limit Switch (LS5)
6. High Drive / Tilt Override (LS2)
SJ82 T, SJ86 T
Tools required:
Top View
LS2
LS4
6
7
Components and limit switch locations
Calibrated digital protractor (to measure boom
▪
angles)
Multi-meter with continuity setting
▪
Level
▪
Front of Machine
8
9
LS1
LS6
7. Boom Angle (dual load) (LS4)
8. Directional Sensing Limit Switch (LS1)
9. Cushion Limit Switch (LS6)
10. Master Cylinder Link
11. Steering Axle
12. Counterweight
Section 5 – Procedures
11
12
10
M62347AA
229040ABA
201
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