Author Topic: Throttle metering arm spring  (Read 423 times)

Ed Ramey

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Throttle metering arm spring
« on: July 15, 2011, 11:31:28 AM »
What is the purpose of the spring,TCM p/n 628371,that is between the 2 metering arms. My spring is missing on my IO-470C.

Ed

Don Lawrenz

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Throttle metering arm spring
« Reply #1 on: July 15, 2011, 11:57:03 PM »
If that is the spring I think it is, basically to remove slop and decrease associated wear. The assembly will bounce around with engine vibration and pretty soon the joint wears out resulting in a fairly expensive replacement compared to a few dollars for the spring.