TM 10-4930-351-14
0022 00
REMOVAL
1.
Place drain pan under pumpage overtemperature sensor (2).
2.
Disconnect cable assembly W103 (1) at engine module electrical connection panel.
3.
Remove pumpage overtemperature sensor (2) from bottom of fuel transfer pump discharge housing (3).
TEST SENSOR
WARNING
Adhere to all safety requirements and provide adequate ventilation and fire protection to prevent
injury to personnel.
NOTE
Check sensor continuity at room temperature before starting test.
1.
Connect the overtemperature sensor (2) wire leads to the multimeter leads.
2.
Record whether or not the overtemperature sensor is closed (continuity) or open (no continuity).
3.
If sensor is open, stop test and replace sensor. If sensor is closed, continue to step 4.
NOTE
The following steps must be performed in the sequence shown.
4.
Attach thermometer to the top edge, and inside, of the test container.
5.
Using electrical tape, attach the sensor to the test container handle so that the sensor is suspended in the container, close
to, but not touching, the thermometer or the bottom of the container.
6.
Fill the test container with water so that the sensor and at least 2 inches of the thermometer are covered.
7.
Plug the test container into a 110v outlet and connect the sensor wire leads to the multimeter leads. Observe temperature
and multimeter until the sensor opens and/or the water heats to +190 F.
8.
If sensor does not open (no continuity), stop test and replace sensor. If sensor opens, proceed to step 9.
Unplug the test container and let water cool to room temperature (less than +100 F).
9.
10. If sensor does not close (continuity), stop test and replace sensor. If sensor closed, proceed to step 11.
11. If the sensor opened (step 7) and closed (step 10), the sensor is acceptable.
INSTALLATION
1.
Clean sensor threads as required in fuel transfer pump discharge housing (3).
2.
Apply a light, even coat of thread sealant to pumpage overtemperature sensor (2) threads and install in fuel transfer
pump discharge housing (3).
3.
Connect cable assembly W103 (1) at engine module electrical connection panel.
END OF WORK PACKAGE
0022 00-2
