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Richard Abramson wrote: Antonio:
The pans were air raised and spring lowered. If the pans were down, needless to say the compressor would not be running, so therefore there would be no control air to raise the pans.
The MILW boxcabs had trolley poles that would be raised if the pans were down. This would start the compressor pumping up the air to raise the pans.
Didn't they have a separate air tank for the ( Pans ) Just in case the main train air was gone. Same with some ALCO units having ( Air Starters ) they had a separate air system for the starter ?