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International Automotive Technicians Network
Re: powertrain vibration
Posted to HD/Fleet Forum on 2/2/2019

If you have Allison DOC software the analyzer program is in it. It is very detailed and works excellent. My bus had vibration from 35-47 and you could roll it in and out with light throttle pressure, very minimal at 60 mph. It had taken out C4 & C5 clutches in... Login to read more.