9.29
3507, 3508, 3509, 3512, 3513, 4007, 4008, 4009, 4012, 4013
Electrical System
9.12.5
Transmission Mounted Speed Sensor
The transmission speed sensor is located at the left side
of the transmission below the transmission filter.
a. Transmission Mounted Speed 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. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
5. Unplug the speed sensor sender (
10
) connector
from the wiring harness connector.
6. 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 part.
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 battery negative (-) cable to the battery
negative (-) terminal.
4. Close and secure the engine cover.
9.12.6
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. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
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. Connect the battery negative (-) cable to the battery
negative (-) terminal.
3. Check for proper coolant level.
4. Start the engine, allow it to reach operating
temperature and observe the operator’s 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.
