JLG 1250AJP Service Manual - Manual (Page 311)

SECTION 4 - BOOM & PLATFORM
3121171 – JLG Lift – 4-71
17. Press the ENTER key to acknowledge the stability
control is turned off. The analyzer should read:
18. The control system will allow only tower lift (without
auto tower telescope) using the tower lift switch on
the ground console.
19. Activate tower lift enough to gain access to the tower
lift cylinder.
20. Use a crane or other suitable supporting device to
support the weight of the tower and main boom
assemblies.
NOTE: The tower and main boom assemblies weigh approx-
imately 14000 lbs. (6350 kg).
21. Put a nylon strap capable of supporting the weight
of the lift cylinder around the cylinder.
NOTE: The tower lift cylinder weighs approximately 644 lbs.
(292 kg).
22. At the rod end of the cylinder, remove the retaining
bolt and pivot pin that secures that end of the cylin-
der to the tower boom.
23. At the barrel end of the cylinder, remove the sensor
cover to gain access to the sensor. Remove the
angle sensor, sensor arm, and sensor pin.
24. Loosen and remove the bolt that secures the retain-
ing pin and remove the retaining pin.