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WEAR GAGE SET
This tool is used to check for wear on the pins and sockets of the ground power plug and receptacle.
When used on the ground power plug’s sockets, F70284 measures a minimum disengagement force of 10 pounds (4.5 kg) for each large socket and 5 pounds (2.3 kg) for each small socket. When used on the airplane’s ground power receptacle, the F70284 acts as
a go/no-go gauge by fitting over the receptacle pins. The receptacle pins are worn if the gauge will fit over the pins.
The F70284-1 wear gauge set is used on all 737 airplanes.