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Re: MACK AC-355/380 misfire
Posted to HD/Fleet Forum on 3/26/2019 1 Reply

Hi William and others, we pulled the #1 and #2 pumps (EUP's) back out and the pumps, cam lobes, and roller lifters all look fine. Neither set has any visible wear or any signs of damage.

I was surprised to see only two o-rings per EUP although it appears to ... Login to read more.

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