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International Automotive Technicians Network
Re: CUMMINS 6.7 ISB CM 2350
Posted to HD/Fleet Forum on 4/16/2021

A 50/50 mix of Naptha and tranny fluid in a pressure sprayer is a great penetrant for problems like this. But, it has to sit for a few hours. After that use a half moon wrench or a 90 degree "blue flame" wrench to get on the nut/bolt to turn it. Login to read more.