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Re: 1989 Ford B700 6.1L VIN H Trolley Bus AIS diagram needed
Posted to HD/Fleet Forum on 10/1/2020

Ford should still have illustrations and part numbers. You just need to find a willing counter person. As I recall they had two air pumps and lots of plumbing. Find a local school bus graveyard, there's probably still a few around. Login to read more.