Shaft Log

After returning from the Bahamas and before making our way to Maine we hauled the boat so that we could redo the bottom paint and found that the cutlass bearing was worn.  Since the boat was already out of the water we decided to replace the bearing.

There had been several different methods mentioned on various web forums for the removal of a cutlass bearing from an Island Packet.  After trying several I came up with my own method which involved removing the prop, shaft zinc, and then the stern tube.  There are two bolts holding the shaft log to the stern of the boat – the top one is easy to remove – the bottom is nearly impossible to reach.  I was finally able to remove the lower bolt by using a ratchet, an extension, a flexible coupling and another extension, while lying in an extremely cramped space.

Teak Shims

When the boat was made the stern tube was set in place with teak shims and bedded in 5200.  I never wanted to have to deal with the shims ever again so after removing the stern tube I used a thickened mix of epoxy to true up the shaft log mounting flange with the stern of the boat.

Gap between the flange and
the stern after removing the
old bedding and shims.
Stern tube bedded in thickened epoxy.
I reversed the flange bolts and notched
them so that final adjustment could
easily be made after applying the epoxy.I later replaced these bolts with slightly
shorter notched bolts and nylock nuts
so that the next removal of the shaftlog
will be much easier.
Note the black arrow on the stern tube flange!  The flange has a 2 degree tilt so it has to be reinstalled with the top side up……..

Shaftlog rebedded and epoxy cleaned up.  Final step is to break the shaftlog loose, remove the mold release wax, replace the the bolts and rebed with 5200 and tighten everything in place.

The old cutlass bearing had to be pressed out of the shaftlog at a local machine shop and the new bearing also had to be pressed in.