What temperatures rises (over ambient air temp) should a new Gen 3 gear box see during break-in and normal operation?
There is no brake-in period. The temperature should remain 15 F below the engine coolant temperature. Max engine coolant temp. is 220 F. Enough air cooling of the drive should be provided to maintain this ratio. The spinner to cowling gap is directly related to the temperature of the drive unit and a 1/2″ gap is preferred over a smaller gap. This also allow for easy cowling installation / removal. 4. Do you suggest having an oil analysis done at regular intervals? Do you have any base lines for “normal wear”. Yes, send in a sample every 50 or 100 hr. The company you send it to will provide a guide for normal wear. What you are really looking for are trends, comparing your first analysis to the next, to the next.
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