I have a 1983 Hunter 30, which has a 1 inch shaft. I'm going to make a puller so I can press out and replace the cutlass bearing without removing the shaft. Can someone tell me what the outside diameter of the cutlass bearing is? Thanks.
Cutlass Bearing
- Thread starter Ca Va Encore Bien
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Old Cutless Bearing
Being that age you are probably in luck in having a cutless with a brass or bronze outer sleeve. With a 1" diameter shaft they were mostly 1½" outside diameter and 4" long rather than later versions that have a tuphnol sleeve and are only 1¼" OD.
This means you can make a tool for removal from an old bearing as I did with my boat after I had had the strut bored out. See photo.
Just remove the grub screws in the old strut, slip the slotted sleeve tool over the shaft and slide a hammer down the shaft to knock the old bearing out (after taking the prop off of course).
Mine needs only gentle taps with the hammer, nothing nearly enough to disturb the strut and anyway you can hold a lump hammer against the strut when you first start the job.
Putting the new one in is just a matter of using the old one as an insertion tool over the shaft.
If it turns out you have a later type then this might not work with a 1¼" OD bearing.
Good luck.
Being that age you are probably in luck in having a cutless with a brass or bronze outer sleeve. With a 1" diameter shaft they were mostly 1½" outside diameter and 4" long rather than later versions that have a tuphnol sleeve and are only 1¼" OD.
This means you can make a tool for removal from an old bearing as I did with my boat after I had had the strut bored out. See photo.
Just remove the grub screws in the old strut, slip the slotted sleeve tool over the shaft and slide a hammer down the shaft to knock the old bearing out (after taking the prop off of course).
Mine needs only gentle taps with the hammer, nothing nearly enough to disturb the strut and anyway you can hold a lump hammer against the strut when you first start the job.
Putting the new one in is just a matter of using the old one as an insertion tool over the shaft.
If it turns out you have a later type then this might not work with a 1¼" OD bearing.
Good luck.
Attachments
I have an 84 with a 1" shaft and it does have a 4 X 1 X 1 1/4 cutlass bearing. I use the same style pusher tool as shown in Donalex pix. Good advice to on removing the set screws. If using a hammer be extremely careful as you may damage the tranny. to avoid that possibility, I much prefer to use a puller. Years ago I found on the net this attached drawing (unfortunately don't know who the author is so I can't pay credit) and made a puller out of mild steel. The dwg is not to scale but I made the 2 plates 5" X 2 1/2 X 1, with the holes being 1 1/8 for the forward plate (make sure you have the radius of the hole no higher than midway through the plate) and 1 3/8 for the back plate (to let the cutlass through when it comes out) . Use 1/2" threaded rods long enough to be able to install the cut-off pusher (as per Donalex) on the shaft forward of the strut. Good luck
Thank you very much for the info and the drawing. That's very helpful. I plan on making a tool rather than using a hammer. What did you use for the pusher? I don't have an old bearing.
I actually sent you what I had found in my computer. Same principle but I had forgotten I had done the tool differently years ago and attached is the one that I found easier to work with as it is more stable. Of course I had access to a machine shop in my working days and thus was able to do everything myself, out of 304 stainless steel. Pulling it out made me realize I never did enlarge the bolt holes to use 1/2" threaded rods. So it will become another project on my list. Hope this helps. Good luck
That is very helpful. I have access to a couple of shops so that's where I will head. Thanks very much.
Bob
Bob
Ireplaced mine on a 1991 Hunter and it is 1-1/4" I used a similar puller and it took about one hour. Good luck.
Newbie here...
Would the rudder have to come off anyway?
Also, just wondering... why not pull the shaft and repack the stuffing box while at it? it seems like the perfect opportunity!
Thanks.
Would the rudder have to come off anyway?
Also, just wondering... why not pull the shaft and repack the stuffing box while at it? it seems like the perfect opportunity!
Thanks.
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