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Is my heat pump fan motor going bad?

last month

Thanks for any advice. I have a 16 year old heat pump - Trane 2TWR3-UP-1A. The fan went out a month ago and I replaced the starter capacitor thinking it was fixed. Since then the fan stopped running several times. Nudging the fan blades doesn't help. The capacitor and relay switch are good. The resistance between motor wires is 20, 43, and 53. Does this look like the motor is going bad, or should I be looking for another problem?

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