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I am rebuilding a used vacuum pump and need a little help. When looking at the hub the slots for the vanes have a slight angle to them meaning the outside of the vane where it touches the pump wall will ether be leading ( angled into the direction of travel ) or lagging (angled into the direction of travel ) . being the pump had been opened prior to my getting it I am not sure it was reassembled correctly. I suspect the vanes should be leading or pushing forward into pump wall and direction of travel as I believe if the vane lag they can bind up and break.
Can anyone tell me if my thinking is correct or do I have it all backwards.
Thanks
Can anyone tell me if my thinking is correct or do I have it all backwards.
Thanks