Home › Forum › Ask A Member › RD-17 crank defects—- › Re: RD-17 crank defects—-
By tipping the pistons, are you saying they have side-to-side slop at the head end? That is quite normal. The pistons have considerable taper. Wrist pin is supposed to be a press fit in the piston at one end, and a slip fit on the other end. The slip fit end should be marked with an "L" or word "Loose" or something. Always press it out through the tight end, and install through the loose end into the tight end. Support the tight end while pressing the pin in and out.
I assume the motor had the lip type seal at the lower end of the crank? That seal was a BIG mistake that destroyed most of them early on. If you do rebuild it, replace the lower bearing with the type that uses a carbon seal, and install a carbon seal assembly. You can find the parts listed under 1956 30hp.