Cutlass Bearing

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  • February 12, 2013 5:16 AM
    Message # 1206682
    Deleted user

    My Cutlass Bearing and Shaft-log seem to be different than my manual.  I blogged the problem and included pics, specs, and any/all information I can think of.  Any suggestions would be appreciated.

    Last modified: February 24, 2013 10:23 AM | Anonymous member (Administrator)
  • February 12, 2013 6:33 AM
    Reply # 1206745 on 1206682
    David, the part sticking out where the calipers are is part of the cutless bearing..what is the OD of that part? 
  • February 12, 2013 7:53 AM
    Reply # 1206809 on 1206682
    Deleted user
    Hey Gary,

    That IS 1.5" but appears to be one piece with the shaft-log.  If it is a separate piece, how in the world do I get it out? 

    Thanks for your help.

  • February 12, 2013 9:34 AM
    Reply # 1206873 on 1206682
    Yes, that is the outer shell of the cutless bearing. Sometimes there is a set screw holding it in....if so then loosen the set screw and press the old cutless out. This can be done with a hydraulic press by a machine shop, or if you are careful with some sort of drift or driver from the side that the motor would be on. There is probably a shoulder on that side, so it will only come out in one direction.
  • February 12, 2013 9:53 AM
    Reply # 1206883 on 1206682
    Deleted user
    Thanks Gary,

    My first Cutlass Bearing.  There is enough corrosion around the bearing that I thought it was just one piece with the shaft-log. Boy, do I feel like a dinglewood.

    Thanks for your help.

    David F.
  • February 12, 2013 10:07 AM
    Reply # 1206889 on 1206682
    Deleted user
    Any other way to get it out besides a machine shop?  There's not one readily available around here and I seam to remember someone on here discussing a way to remove the old Cutlass Bearing with regular tools.

    Thanks again.

    David F.
  • February 12, 2013 10:13 AM
    Reply # 1206896 on 1206682
    Yes, you can drive it out as explained earlier... don't feel bad! :)
    Caution, driving it out can get don't want to score the inside of the shaft log
  • February 12, 2013 12:27 PM
    Reply # 1206990 on 1206682
    Deleted user
    I tried the driving it out until there was no obvious edge left of the cutlass bearing. I then had to hacksaw it in two places (carefully just to the shaft log) the length of the cutlass bearing to compromise the integrity of the tube to get the bearing to collapse with a long skinny screwdriver to where I could then pull it out. I did bugger up the inside of the shaft log a little but I brought it back to life with a cylinder hone. This may sound a bit rough but it worked for me. Hope this helps.  
  • February 12, 2013 8:40 PM
    Reply # 1207302 on 1206682

    Beating on stuff almost always buggers it up.  Try this if you have any modicum of mechanical aptitude.  See the drawing at this link

    Get a 12” length of threaded rod as large as possible (3/4 if you can, ½ is minimum and probably too small), grease it and put a nut and several washers on one end that will fit inside the shaft log.  These washers must fit very closely to the inside diameter of the shaft log (probably just shy of 1.5 inches)  Grind down the washers and even the nut ‘tips’ if necessary so they just fit inside the shaft log without binding or scoring the sides too deeply.  Use a 5 inch or so length of pipe with an inside diameter big enough to allow the cutlass bearing to easily slide down it but large enough in diameter to sit on the cutlass bearing face.  This pipe must have square ends, using a hacksaw to cut it won’t work.  Put several large diameter washers on the other end, clamp the shaft log ear in a vise and tighten the outside nut with a big wrench.   If it is really stubborn you will need to heat the shaft log.  You can use this tool to draw the new bearing back into the shaft log as well but you won’t need the length of pipe.


    Last modified: February 24, 2013 10:31 AM | Anonymous member (Administrator)
  • February 13, 2013 5:54 AM
    Reply # 1207525 on 1206682
    Deleted user
    Thanks for the suggestions.

    Mike, does enough of the brass of the bearing rise up in the shaft enough for the washers to grab? I looked at the manual drawing and it appears to be recessed and as I peer down through my Shaft-log, (which is removed), I can only see the rubber of the bearing?  

    I love the idea though.  Have you actually used this on a your boat?


    David F.
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