TECHNICAL INFORMATION BULLETIN
November 27, 2002
IT28G (DBT, 8CR, 9AR)
924G (AAN, DDA, WMB, 3PZ, 9SW)
924GZ (AAB, DFZ, WGX, 3DZ, 6YW)
928G (DJD, WLG, 6XR, 7SR)
Component Code: 7481
SUBJECT: Fuel Level Sensors May Break Loose From Float Arm
After being installed in fuel tanks, certain Fuel Level Sensors may break loose from their float arms. Once a fuel level sensor breaks loose from its float arm, fuel level sensing becomes impossible. This problem occurs in the 166-7446 Fuel Level Sensor and the 194-7265 Fuel Level Sensor. AVSpare engineering is aware of this problem and has corrected this problem at the supplier. However, there is still a small population of the non-corrected 166-7446 Fuel Level Sensors and 194-7265 Fuel Level Sensors in dealer stock.
Before a new 166-7446 Fuel Level Sensor or 194-7265 Fuel Level Sensor is installed, it is very important to inspect the new sensor in order to ensure that the correction has been made. Illustration 1 shows the correction to this problem.
As shown in Illustration 1, a 3S-2093 tie wrap has been used to help secure the sensor to the float arm. If the new 166-7446 Fuel Level Sensor or 194-7265 Fuel Level Sensor is already secured to the float arm by a 3S-2093 tie wrap (as shown in Illustration 1), the sensor is ready to be installed. If the new 166-7446 Fuel Level Sensor or 194-7265 Fuel Level Sensor is not secured to the float arm with a 3S-2093 tie wrap, install a tie wrap as shown in Illustration 1.
Note: To ensure tightness, it is important that a 4C-5877 Cable-Tie Tool is used to secure the 3S-2093 tie wrap around the fuel level sensor and the float arm.
Illustration 1. Tie wrap that is used to secure the fuel level sensor to the float arm.
1) 3S-2093 Tie wrap
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ALL RIGHTS RESERVED