JLG 1930ES - Tilt Vs. Allowed Height Evaluation

SECTION 5 - JLG CONTROL SYSTEM
3121166 – JLG Lift – 5-7
Tilt vs. Allowed Height Evaluation
First, find a level surface (not just flat like a parking lot;
must be level). The surface should be a plane in which the
wheels are within 00.2. Find this surface by taking a
digital level and measuring the areas on which the wheels
would rest in both the X and Y directions. Mark the loca-
tions and drive the machine to these points. If a level sur-
face can not be found, flat shims or plates may be place
under the wheels to create a level plane for the wheels.
In determining the existing tilt angle, read the angle on the
Analyzer under DIAGNOSTICS/SYSTEM. Do not place a
hand-held level on the machine to determine whether the
machine is level and lifting to the appropriate height. Such
a measurement will likely be different than the Ground
box/tilt sensor angle reading due to manufacturing and
mounting tolerances. The tilt angle in both directions
should read within 0.5 while on a level surface. If not,
then either the machine has a drifting tilt sensor or has
been erroneously re-calibrated since the original factory
calibration.
Check the service records to determine whether a re cali-
bration has been performed. If so, re-calibrate on the level
surface. If there is no record of an earlier calibration, we
must assume that the sensor output has drifted. There-
fore, replace the sensor and return to JLG with a detailed
troubleshooting description.
NOTE: There is a rare case in which an attempted calibra-
tion will be unsuccessful for machines with Ground
module software version P1.5 or earlier. If this
occurs while performing a calibration, the Analyzer
will display:
LEVEL VEHICLE
TILT +20.0 +20.0
and the following fault will also be logged.
TILT SENSOR NOT CALIBRATED (2/3) [DTC 811]
If no other faults have been logged since the last startup,
this fault indicates that the software needs to be updated
to P1.6 or later. Update the software and continue trouble-
shooting evaluation before replacing any components.
If the tilt sensor readings are within range for a level
machine, compare the allowed Tilt vs. Height in the chart
below. Being within 6” of the target height is considered
acceptable.
If the machine does not appear to track the lift cutout
heights and no fault exists as described above, stow the
machine and re calibrate the Elevation Sensor.
Table 5-1. Tilt Settings
Model
Tilt Setting
(front to back)
Tilt Setting
(side to side)
Maximum Deck
Elevation
1930ES 3°
1.5°
2°
2.5°
3°
18.75 ft (5.7 m)
14 ft (4.3 m )
11 ft (3.4 m )
9 ft (2.7 m)
2030ES 3°
1.5°
2°
2.5°
3°
20 ft (6 m )
15 ft (4.5 m )
12 ft (3.7 m )
10 ft (3 m )
2630ES 3°
1.5°
2°
2.5°
3°
25.4 ft (7.7 m)
20 ft (6 m )
16 ft (4.9 m )
13 ft (4 m )
2646ES 3°
2°
2.5°
3°
26 ft (7.9 m )
22 ft (6.7 m )
20 ft (6 m )
3246ES 3°
2°
2.5°
3°
31.75 ft (9.7 m)
22 ft (6.7 m )
20 ft (6 m )