A local flight school where I worked weekends had a 152 that shimmied pretty badly after an overhaul. The strut components, oils, and tire were all gone over with a fine-tooth comb, with no luck dampening the shake. It was so bad every take-off was a soft-field :o)
I was told by a respected local wrench that if, during replacement of the engine after overhaul, the motor mounts and other assorted bracketing get tweaked a little too much and not uniformly torqued this can cause severe shimmy that appears to be unrelated to the nose wheel components. Is there an inexpensive way to check the mounts and bracketing?
Snakum