JLG 4013PS Service Manual - Manual (Page 171)

9-31 3508PS, 3509PS, 3512PS, 3513PS, 4008PS, 4009PS, 4012PS, 4013PS, 4017PS, 40.8, 40.9
Electrical System
c. Transmission Mounted Speed Sensor
Installation and Testing
1. Install new o-ring on speed sensor, install sensor in
transmission, install clamp on sensor, bolt down
clamp, turn arrow on sensor 45 degrees from clamp
bolt and torque to 8-10 Nm (70-88 lb-in).
2. Connect the sensor plug to the wire harness.
3. Properly connect the battery.
4. Close and secure the engine cover.
5. Remove the Do Not Operate Tag from the ignition
key switch and the steering wheel.
d. Transmission Mounted Speed Sensor Calibration
A JLG Analyzer is required to perform this calibration.
There is also an embedded JLG Analyzer in the cab
display. To access the JLG Analyzer, press and hold the
C and OK buttons on the keypad simultaneously until the
JLG Analyzer Help Menu screen appears on the display.
1. Go to the Access Level menu and enter a password
of 33271.
2. Go to the Calibrations menu, select Vehicle Speed
and press the Enter button (OK button on the
embedded Analyzer).
3. Follow the instructions on the Analyzer. The
machine must be driven over a 50 meter straight line
course.
• The machine cab be driven in any gear and at
any speed.
• The Analyzer will prompt the operator to press
Enter or OK when starting the 50 meter drive.
• Drive the machine 50 meters and stop. When the
50 meter point is reached, press the Enter or OK
button as appropriate.
4. If the calibration fails, check the Help menu for
possible faults.
9.14.4 Engine Coolant Temperature Sender/
Switch
The engine coolant temperature sender/switch is located
by the alternator.
a. Engine Coolant Temperature Sender/Switch
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. Unplug the engine coolant temperature sender/
switch connector from the wiring harness connector.
6. The sender/switch is threaded into the engine block.
Remove the sender.
b. Engine Coolant Temperature Sender/Switch
Inspection and Replacement
Inspect the sender/switch and the wiring harness
connector terminals for continuity. Replace a defective or
faulty sender/switch with a new part.
c. Engine Coolant Temperature Sender/Switch
Installation and Testing
1. Thread the engine coolant temperature sender into
the engine block snugly, then connect the sender/
switch connector to the wiring harness connector.
2. Properly connect the battery.
3. Check for proper coolant level.
4. Start the engine, allow it to reach operating
temperature and observe the operator instrument
cluster for warning indication. If the sender/switch is
not defective, the problem could be elsewhere;
possibly in a shorted wire, improper-running engine,
improper or low coolant, obstructed or faulty radiator,
coolant pump, loose fan belt, defective instrument
display, etc.
5. Close and secure the engine cover.
6. Remove the Do Not Operate Tag from the ignition
key switch and the steering wheel.
9.14.5 Ignition Key Switch
a. Ignition Key Switch 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.