Crusader454/Borg Warner pinned shaft question

Question

I have pinned shafts in my boat. It has solid couplings with the key in the keyway. I had a 1 inch piece of the pin shear and go flying across the engine room. Need to get the rest out and replace with new. I need tips and ideas on how to get the rest of the pin out. I was told not to disconnect the coupling from the tranny or I'll be aligning the engine. I have a 5lb maul and some drift pins. Also, what holds the pin in? It had electric tape wrapped around the coupler.. but that cant be it..can it?

Answer 1

If your in the water-you will need to secure the prop shaft so it will not leave the packing gland and let the boat sink. I know it doesn't sound likely, but that's boating for you. The pins should be a press fit. many put a hose clamp over them so they don't fly when they fracture but then you don't know if they are failing till after the fact. I have only aligned  Velvet drive but would guess its quite similar. I think 8 hours is a little long for an engine alignment. It should be real close to alignment or the drive pins would be the least of your problems. The previous post was accurate.

  ps- would be careful with that big hammer around those big Monel shafts-that stuff is pretty malleable. You don't want to skip rope after you are done-use a special press made just for such a problem. Wish I had a big boat with these problems!

Answer 2

Remove the bolts split the coupling and drive the key way out as there is something wrong as the key is installed & removed from the coupling side>Sounds like it has sliped out of the coupling>It won't change the alignment > But check it before installing the bolts> There are 2 square bolts on 2 side of the coupling that have detents they go into that keeps the shaft in the coupling>Check the coupling on the shaft as if it is sloppy replace it>