JLG 1500SJ Service Manual - Manual (Page 408)

SECTION 5 - HYDRAULICS
5-56 – JLG Lift – 3121262
5.3 CYLINDER LENGTH SENSOR
Both the jib lift cylinder and the platform level cylinder uti-
lize a cylinder length sensor which communicates with the
JLG control system. These sensors can be removed from
without the cylinder being disassembled.
Removal
1. Lower the platform to the ground or on suitable
blocking.
NOTE:
The jib lift cylinder weighs approximately 186 lbs.(84
kg) and the platform level cylinder weighs approxi-
mately 76 lbs. (34 kg)
2. Support the weight of the jib cylinder and remove
the bolt and keeper pin that secure the cylinder bar-
rel retaining pin. Remove the pin.
3. Lower the cylinder to a horizontal position to gain
access to the rear of the cylinder.
4. Place a catch pan under the cylinder to capture any
oil that may drain out of the cylinder. If the cylinder is
removed from the machine, drain the oil out of the
cylinder.
5. Remove the plug that is over the setscrew that
secures the sensor in place.
6. Using an allen wrench, remove the setscrew.
Figure 5-117. Cylinder Length Sensor