jcb JS300 Service Manual page 193

X Clearance
3. Fully crowd the bucket and lower the boom until the bucket is on the ground. Do not retract or extend the
dipper ram.
4. Stop the engine and remove the ignition key.
5. Remove the proximity switch cover, then loosen the proximity switch sensor fixings.
C
B
A
A Proximity switch cover
B Proximity switch sensor
C Sensor fixings
6. Put the proximity switch sensor on the slot, so that it is in line with the pick up block on the dipper.
7. Tighten the proximity switch sensor in position, then check that the distance between the sensor and the
pick up block is
Distance: 4.5 ± 0.5mm
8. Install the proximity switch cover.
118
Figure 154.
X
Figure 155.
9831/1100-2
Operation
Working with the Excavator Arm
118