JLG 1100S Service Manual - Manual (Page 122)

SECTION 3 - CHASSIS & TURNTABLE
3-80 – JLG Lift – 3121256
3.18 SWING SPEED PROPORTIONING
Swing Speed Proportioning uses the boom length and
angle sensors to improve the comfort, speed and control
of the turntable swing function. Turntable swing speed is
increased as the distance of the platform to the center of
rotation is decreased. This results in approximately con-
stant platform speeds regardless of boom position. Swing
speed proportioning is disabled with any envelope sen-
sors failure. Disabling of swing speed proportioning will
default to the slowest swing speed setting.
NOTE: For more detailed information concerning system
adjustment and operation, refer to Section 6 - JLG
Control System.
3.19 CHASSIS TILT INDICATOR SYSTEM
The Chassis Tilt Indicator System measures the turntable
angle with respect to level ground. The tilt sensor (which
is an integral part of the ground module) has two settings;
5.0 and 8.0 degrees. The smaller angle is used for the pur-
pose of warning the operator by means of the chassis tilt
light in the platform display panel. Additionally when used
in conjunction with the Beyond Transport - Drive Speed
Cutback System, the tilt sensor will cause an alarm to
sound, and automatically put all functions in the creep
speed mode. With the exception of the speed cutback,
this is a warning system only. The machine will continue to
function. The operator is responsible to prevent the
machine from attaining an unstable position. The 8.0
degree angle is used exclusively for the purpose of auto-
matically shifting the drive motors to the maximum dis-
placement position (slow speed). The control system
responds to indicated angle readings 0.5 degrees smaller
than the required angles to account for calibration and
sensor variation.
NOTE: For more detailed information concerning system
adjustment and operation, refer to Section 6 - JLG
Control System.
Figure 3-52. Swing Bearing Torque Sequence
NOTE: Swing Bearing Torque Sequence is typical for both inner and outer races.