Topic: Ok. Maybe the screwdriver was a bad choice – Antique Outboard Motor Club,Inc

This topic has 8 replies, 8 voices, and was last updated 6 years, 10 months ago by garry-in-michigan.

Viewing 9 posts - 1 through 9 (of 9 total)

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June 20, 2017 at 2:24 am #7381
bullie
Participant
I was attempting to remove the seal from the bearing assembly on my cd-19. I tried knocking it out from the back and only succeeded in bending out the cup. Never got it to move at all. I need seal removal 101. It looked really easy on youtube.
June 20, 2017 at 1:54 pm #59996
mr-asa
Participant
You can sort of wedge the screwdriver in there and pry it up. If you’re replacing it it really doesn’t matter what you do to that seal so long as you don’t damage the bearing surfaces.

I’ve been known to turn the powerhead upside down and slowly drill a hole into the seal, then use that as a prying surface.
I don’t think I’d recommend that for your first one, though. You have to plan it out so that you don’t get shavings into the motor.
June 20, 2017 at 2:56 pm #60001
bullie
Participant
Ok. Something I said was wrong I guess. I led you to the wrong part of the motor. I am trying to remove the prop seal from the bearing assembly on the gear case. I am learning. Sorry. I have been trying to tap the seal out but all I did was destroy the outer lip of the seal. I never got it to move at all.
June 20, 2017 at 3:17 pm #60002
fleetwin
Participant
US Member - 2 Years
I am so lucky to have an amazing machinist as a friend and club member….
Dave Bono made me a beautiful tool to remove these pesky seals on gearcase heads and upper bushing/seals! No more mangled seal lips, damaged casting from prying and tapping!
One two three done, will post some pictures…
June 20, 2017 at 3:25 pm #60003
The Boat House
Participant
While this problem may be new to you
its bin a PITA for most of us at one time.
I believe what you have now is only the
sides of the seal remaining as you have
knocked the rest off. Been there.
What you will need to do is try to catch
the edge of the side of the seal with
something and push it inwards. Something
small to start with like a dull all. Once you
get it started you can go to something
a little bigger.
Push the side of the seal so its top is away
from the casting. You want to push on the
seal not drive something in between the
seal and the casting. This may relive the
pressure enough so it will come out now
but if not go to the opposite side and do the
same thing. You may have to do this in 4
places. Now the trick is to do no damage
to the casting. As that is almost impossible
do the least amount of damage as possible.
You’ll get better at this over time if you
don’t have the proper tool for whatever
seal you are removing.
June 20, 2017 at 4:28 pm #60004
RICHARD A. WHITE
Participant
Lifetime Member
There is an actual tool for that purpose… it is alos intended to do the upper drive shaft seal I believe… I bought mine from Frank Robb. He and I had the same issue, in as much as it is like pulling a seal from the upper crank shaft, this application that shaft is removed then the seal is pulled. So here is the problem. the puller itself has what one could call massive teeth, but only a couple and they break very easy. The one O bought from Frank had one broken grabber, and I got oh so lucky to be perusing Ebay and found an OEM one.

I would think a guy could make a fixture to use a normal seal puller to remove them. Can ya tell I have thought about this?
I suppose I should get into this further and see what can be done as these are more of a pain than the crank shaft seals..

I can post pictures tonight if anyone is interested…

http://www.richardsoutboardtools.com
classicomctools@gmail.com
June 20, 2017 at 7:32 pm #60009
frankr
Participant
US Member
A Dremel can be a wonderful tool sometimes. Use it to grind a groove almost through the remaining shell of the seal–till it is paper thin,
or less. Then it will fall out.
June 21, 2017 at 4:59 pm #60082
fisherman6
Participant
US Member - 2 Years
I always remove the prop shaft from the gearcase and put the bearing head back in. Put the skeg back on with the gearcase gutted and tighten the screws. With it mounted in the lower unit, you have something to hold onto. I then remove the seal with a seal puller I made from a piece of a damaged drive shaft I had. Thanks to Ron Baker for the idea of making the seal puller. I had destroyed the one I bought from Advance Auto Parts trying to pull the seal out of one of my QD-16s. So far, using the gearcase to hold that bearing head has been the easiest solution I have found for getting a good hold on it to allow the seal to be pulled. I did crack the seal pocket on one that was previously damaged, but that is the only problem I have had. Maybe this will help.
Here is a photo of my seal puller.

-Ben

OldJohnnyRude on YouTube
June 21, 2017 at 8:37 pm #60091
garry-in-michigan
Participant
Lifetime Member
If the shaft is no longer in the hole, I use three inside hooks from my slide hammer kit . . 😉
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