JLG 4017 Service Manual - Manual (Page 142)

Electrical System
9.22 4017
9.11.4 Transmission Temperature Sender
The transmission temperature sender is located at the
bottom right side of the transmission housing.
a. Transmission Temperature Sender Removal
1. Open engine cover. Allow engine to cool.
2. Disconnect the negative (-) battery cable at the
negative (-) battery terminal.
3. Unplug the transmission temperature sender
connector from the wiring harness connector.
4. The sender is threaded into the transmission
housing. Remove the sender.
b. Transmission Temperature Sender Inspection and
Replacement
Inspect the sender and the wiring harness connector
terminals for continuity. Replace a defective or faulty
sender with a new part.
c. Transmission Temperature Sender Installation and
Testing
1. Thread the transmission temperature sender into the
transmission housing snugly, then connect the sender
connector to the wiring harness connector.
2. Connect the negative (-) battery cable to the negative
(-) battery terminal.
3. Check for proper fluid level.
4. Start the engine, allow it to reach operating
temperature and observe the operator’s display
cluster for warning indication. If the sender is not
defective, the problem could be elsewhere; possibly
in a shorted wire, damaged transmission, improper
or low fluid, etc.
5. Close and secure engine cover.
9.11.5 Transmission Mounted Speed Sensor
a. Transmission Mounted Speed Sensor Removal
1. Open engine cover. Allow engine to cool.
2. The transmission speed sensor (4) is located at the
left side of the transmission below the transmission
filter.
3. Disconnect the negative (-) battery cable at the
negative (-) battery terminal.
4. Unplug the speed sensor sender connector from the
wiring harness connector.
5. Loosen the screw holding the clamp and remove the
sensor, clamp and o-ring.
b. Transmission Mounted Speed 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. 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. Connect the negative (-) battery cable to the negative
(-) battery terminal.
4. Open cover. Allow engine to cool.
9.11.6 Engine Coolant Temperature Sender
a. Engine Coolant Temperature Sender Removal
1. The engine coolant sender / switch is located by the
alternator.
2. Disconnect the negative (-) battery cable at the
negative (-) battery terminal.
3. Unplug the engine coolant temperature sender /
switch connector from the wiring harness connector.
4. 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 with a new sender.
c. Engine Coolant Temperature Sender Installation
and Testing
1. Thread the engine coolant temperature sender into
the engine block snugly, then connect the sender
connector to the wiring harness connector.
2. Connect the negative (-) battery cable to the negative
(-) battery terminal.
3. Check for proper coolant level.