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All the bolts are present , and in good condition. It feels more like the harmonic balancer, but I could be wrong. When looking at the engine, the whole thing is jumping/vibrating. So much so, that even the exhaust and tranny are vibrating like crazy. I checked the engine mounts and trans mount...

It’s my pleasure. Thank you for your support. I will check all of those to see. I’ll get back with you when we run some tests. Thanks again!!

I need help y’all. I’m in the Georgia National Guard as a 91B wheeled vehicle mechanic. We have an M1151a1 in the shop. The engine is shaking violently, and cannot figure out what the problem is. We’ve already checked the fluids, belts, pulleys, engine mounts, etc. any help would be greatly...