JLG 1250AJP Service Manual - Manual (Page 153)

SECTION 3 - 1CHASSIS & TURNTABLE
3121171 – JLG Lift – 3-105
3.22 CHASSIS TILT INDICATOR SYSTEM
The Chassis Tilt Indicator System measures the turntable
angle in comparison to level ground. The tilt sensor
(which is an integral part of the ground module) has three
settings; 3.0° side tilt, 5.0° omni directional tilt, and 8.0°
omni directional tilt.
The 5.0° omni directional angle setting is used to warn the
operator by using the chassis tilt light in the platform dis-
play panel. Additionally when used in conjunction with the
Beyond Transport - Drive Speed Cutback System (Section
4.3, Beyond Transport - Drive Speed Cutback System),
the tilt sensor will cause an alarm to sound and automati-
cally put all functions in the creep speed mode. With the
exception of the speed cutback, this is a warning system
only indicating to the operator the machine has reached
the out of level limit. The machine will continue to function.
The operator is responsible to prevent the machine from
reaching an unstable position.
The 3.0° side tilt setting is used in combination with boom
position and when exceeded, imposes the same function-
ality as the 5.0° omni directional setting. The side tilt set-
ting is ignored when the tower boom is less than 60°
regardless of main boom position and is proportionally
increased in value up to 5.0° as the main boom is lowered
from high angles to horizontal when the tower is above
60°.
The 8.0° angle is used only for the purpose of automati-
cally shifting the drive motors to the maximum displace-
ment position (slow speed). The control system responds
to indicated angle readings 0.5 degree smaller than the
required angles to account for calibration and sensor vari-
ation.
NOTE: For more detailed information concerning system
adjustment and operation, refer to Section 6 - JLG
Control System.