I developed a steam leak on a loco. Not a big one as the burner can maintain 20 lbs pressure, but no more. I can just hear it with my aids turned way up. Ran it on rollers but the weather was too humid to see the vapor. Luckily had fittings in the spare drawer to make an adaptor to take the place of one of the pressure relief valves so I can charge the boiler with air to get up close. The leak is from the banjo fitting for the pressure gauge. It was aimed to vent the steam under the boiler wrap so I thought the leak was the boiler itself. Now need to locate proper size seals. Have to be very careful as only 2 1/2 threads actually grip the boiler. Being lucky is good.
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