Removal; Fig. 10-7: Boom Extension Proximity Switch Operation; Fig. 10-8: Boom Extension Proximity Switch Assembly - JLG Lull 1044C-54 II Series Service Manual

Removal

Boom Extension
Proximity Switch
31200079
Outer Boom Section
Proximity Switch

Fig. 10-7: Boom Extension Proximity Switch Operation

(Ref. Fig. 10-7) The switch operates by sending out a constant, high
frequency magnetic field a short distance from the oscillator end of the
switch. Eddy currents are produced in metal when the magnetic flux lines
pass through it. These eddy currents oppose the oscillations of the
magnetic flux lines and the oscillations stop. A sensor in the switch detects
if the oscillator is on or off and this gives the switch its on/off function.
# Description
1 Inner Jam Nut
2 Proximity Switch

Fig. 10-8: Boom Extension Proximity Switch Assembly

Magnetic
Flux Lines
Oscillator
2
1
#
3 Outer Jam Nut
4 Wire Harness
Outriggers
Middle Rear)
Boom Section
3
4
Description
10-11