JLG 1100S Service Manual - Manual (Page 150)

SECTION 4 - BOOM & PLATFORM
4-2 – JLG Lift – 3121256
Jib Stow System (1100SJP Only)
This machine is equipped with a full function side swing
rotator that is mechanically limited to 90 degree rotation to
the left and electrically limited to 90 degrees to the right
through the use of a positive action limit switch mounted
on the rotator assembly. The machines stowed length can
be reduced to facilitate transportation on standard trailers
by swinging the jib further to the right using the hydraulic
power of the side swing rotator. The control system will
prevent swinging the jib past the 90 degree position
unless the axles are retracted, the boom is in the transport
position, and the jib stow override button on the platform
control panel is held in combination with the jib swing
function switch. When the jib is stowed, automatic plat-
form leveling is disabled, the boom is restricted to the
transport position, and axle extension is disabled. This
system is functional only in the 500 lb. (230 kg) mode of
the Dual Capacity System.
NOTE: For more detailed information concerning system
adjustment and operation, refer to Section 6 - JLG
Control System.
Envelope Tracking System
The Envelope Tracking System uses the envelope control
sensors to enhance the control of the boom within the
working envelope. Due to the shape of the working enve-
lope, the maximum boom angle varies with telescope
length. To maintain unrestricted operation of the boom,
the lift down function is automatically introduced while
telescoping in only when the boom is on the rearward
edge of the envelope. This only occurs when telescoping
in along the rearward edge and is not used elsewhere
within the envelope or when telescoping out. Envelope
tracking is disabled with any envelope or moment viola-
tions or failures. The envelope tracking functionality and
be turned off using the manual position of the boom con-
trol select switch. Refer to Boom Control Select.
NOTE: For more detailed information concerning system
adjustment and operation, refer to Section 6 - JLG
Control System.