G900X/G950 Installation and Maintenance Manual – GEA 71
Page 5-17
190-00719-00
Revision D
N/T1A9-x:
The magnetic pickup tach sender is installed in the magneto bleed port. It is recommended that it be
installed in the non-impulse magneto, but it can be installed in the impulse magneto if only one magneto
exists (engines with single electronic ignition). The N/T1A9-x senders are suitable for non-pressurized
magnetos only. Given that the bleed port size on Slick and Bendix magnetos differ, the installer should
verify that the sender part number is appropriate for the magneto type.
1.
Remove the existing vent plug from the magneto bleed port (Figure 5-12).
2.
Lightly apply thread sealer such as Loctite 242 (or equivalent) to the threads of the sender. Be
careful not to apply too much, and ensure sealer is applied only to the threads and not the pickup
face itself.
3.
Install the sensor into the port (Figure 5-13). The sensor should be installed finger tight plus 1/6
turn. Do not overtighten.
4.
Connect the supplied connector to the appropriate inputs on the GEA as referenced in the
G900X/G950 interconnects in Appendix F-J. Secure the connector and wire assembly to an
appropriate location in the engine compartment to provide strain relief.
Figure 5-12. Magneto Bleed Port
Figure 5-13. Magnetic Tach Sensor Installed
