Testing Type 44 Bomb

[b1biker at aol.com]

Fellow listers -- 
Is there any means of testing the brake accumulator, aka bomb, off the car. I need to replace this component on my 88 5KSQ and am intersted in a means of determining if one from the bone yard is any good before I go to the trouble of installing it on the car. I've got to decide on new vs. used in the next day or two as I need to get the car back into service. Any advice, BTDT or cautions would be very much appreciated.
Gary Meier
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