JLG 4013PS Service Manual - Manual (Page 173)

9-33 3508PS, 3509PS, 3512PS, 3513PS, 4008PS, 4009PS, 4012PS, 4013PS, 4017PS, 40.8, 40.9
Electrical System
been ruled out and in addition, wiring and
connectors have been checked and ruled out, the
fuel level indicator is defective and must be
replaced.
5. Check that the ignition terminal has current and that
the fuse in the fuse panel is not blown.
6. Check for broken, shorted, frayed, disconnected or
damaged wiring between the fuel level indicator
wiring at the cab, fuse and relay panel, ignition key
switch and from the fuel level sender on the fuel tank
through the wiring in the cab.
7. Check the fuel level sender. The resistance of the
fuel level sender is <7 ohms for a full tank of fuel,
108-128 ohms for 1/2 tank and 315-345 ohms for an
empty tank. A defective fuel level sender in the fuel
tank may also prevent the fuel level indicator from
moving.
9.14.7 Boom Angle Sensor
Note: The boom angle sensor (11) is located at the top
left inside rear of the machine.
Note: After installation, the sensor will need to be
calibrated by an authorized service technician.
a. Boom Angle Sensor Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the transmission control lever in (N)
NEUTRAL, engage the park brake and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Open the engine cover. Allow the engine to cool.
4. Properly disconnect the battery.
5. Disconnect the boom angle sensor electrical
connector.
6. If equipped, remove the safety spring (12).
7. Loosen and remove the nut holding the rod
assembly to the sensor arm.
8. Loosen and remove the two bolts holding the sensor
to the sensor seat.
9. Remove the sensor assembly.
b. Boom Angle Sensor Inspection and Replacement
Inspect the sensor and the wiring harness connector
terminals for continuity. Replace a defective or faulty
sensor with a new sensor.
c. Boom Angle Sensor Installation
1. Install the sensor assembly to the sensor seat and
tighten both bolts.
2. Install the rod end to the sensor arm and tighten nut.
3. If equipped, install the safety spring (12).
4. Measure and set rod length (13) to 212 ±0,5 mm if
needed on 8, 9, 12 & 13M Non-Platform equipped
machines. Set the rod length to 211,6 ±0,5 mm on
17M machines and to 226 ±0,5 mm on Platform
equipped 13M machines.
5. Plug the electrical connector into the sensor
assembly.
Note: At this point, the boom angle sensor will need to
be calibrated by an authorized service technician.
6. Properly connect the battery.
7. Close and secure the engine cover.
8. Remove the Do Not Operate Tag from the ignition
key switch and the steering wheel.
9.14.8 Boom Retracted Sensor
The boom retracted sensor (14) is located at the rear of
the boom.
MZ2540
11
13
12
MZ2570
14