How to remove?

Mercury Outboard  general discussion

How to remove?

Postby mark 55 » Wed Oct 13, 2021 12:08 am

This is in a junk gear case. Just hoping to remove all the guts in case something is good. How do I remove what’s left? The shift shaft is pretty solid in the cam. Thanks for any help.
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Re: How to remove?

Postby dave bernard » Wed Oct 13, 2021 12:15 am

remove the shift shaft bushing then the shift shaft pulls up and out.
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Re: How to remove?

Postby mark 55 » Wed Oct 13, 2021 1:14 am

Here is a completely different but also junk gear case. The drive shaft and prop shaft and reverse gear are all free and move/mesh, etc The problem on this one is the ring adapter for the ball bearing isstuck and rusted. Tried heating and beating with the prop shaft in a vise but no luck yet. Sprayed with knocker loose penetrant for the last week prior to heating/beating. Again, just trying to harvest any parts that may be usable.

Keep soaking/heating/beating??

By the way this is from a merc 300 or a mark 58.
Thanks!
Scott
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Re: How to remove?

Postby dave bernard » Wed Oct 13, 2021 1:30 am

make a plate with a hole for the prop shaft then add spacers to the top of the prop shaft . put a nut on and tighten when fully tightened use heat a tighten some more. repeat.  or destroy the housing does not look like a good one. all the welds.
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Re: How to remove?

Postby mark 55 » Wed Oct 13, 2021 1:44 am

Aha! I think get it Dave! Use the prop shaft as a removal tool! I’ll try it!
Thanks!
Scott
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Re: How to remove?

Postby mark 55 » Wed Oct 13, 2021 2:11 am

Ok, got this set up but the prop shaft keeps turning with the nut. Click-click-click

Can’t change gears because the little cam is either not installed or is floating loose in the case. Now how do i stop the prop shaft from rotating? Viise grips introduced into my spacer set up?
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Re: How to remove?

Postby mark 55 » Wed Oct 13, 2021 3:15 am

This is keeping the prop shaft from turning. Using rubber and leather to prevent marring of the shaft by the vise-grip tool. Still nothing. Will keep tension on it overnight. Try again tomorrow.
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Re: How to remove?

Postby Bob » Wed Oct 13, 2021 5:40 pm

Wonder if the welds warped the casing..  when I had a skeg welded the gear case had to be filled with gear grease to absorb the heat otherwise it would warp.  
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Re: How to remove?

Postby dave bernard » Wed Oct 13, 2021 5:59 pm

try impact gun. as bob said even may have tack welded it in.
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Re: How to remove?

Postby mark 55 » Wed Oct 13, 2021 6:11 pm

I was wondering if the weld had something to do with this. I think i’ll cut it open.
Thanks!
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Re: How to remove?

Postby Bob » Wed Oct 13, 2021 7:53 pm

Scott, think there are a few people wondering what’s going on here.  So maybe plan out the cut so you can determine
what exactly is happening.  I’d love to be there when you do  the cut but since I’m not in town I’ll just wait to hear.
Bob
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Re: How to remove?

Postby mark 55 » Thu Oct 14, 2021 12:51 am

So I cut the case in half around the prop shaft. Kinda strange the ring adapter didn’t seem to be stuck but it’s tough to tell why it was so hard to get out. The piece moves freely in each half.

Anyway, it’s done. Not sure if any parts are good or not. Time will tell.

Now I need to get the drive shaft out. It seems to be hung up in the drive shaft needle bearing. It moves about an inch each way with force. Will soak and I’m sure it’ll come free soon.

Scott
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Re: How to remove?

Postby dave bernard » Thu Oct 14, 2021 12:54 am

water pump cartridge must come out.
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Re: How to remove?

Postby mark 55 » Thu Oct 14, 2021 2:36 am

Does anybody have success pulling them out without destroying them? I do have the cartridge removal tool though I have not been able to use it successfully. What is the best way to prep before trying the tool in order to remove it? Soaking with penetrant and heat?
I’m open to any and all advice.
Thanks in advance!
Scott
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Re: How to remove?

Postby dave bernard » Thu Oct 14, 2021 4:39 am

FORGET THE TOOL !
put the drive shaft in the vise take the nut off pinion gear and use heat and drive the gear housing off.
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Re: How to remove?

Postby MercuryMarc » Thu Oct 14, 2021 4:41 pm

dave bernard wrote:FORGET THE TOOL !
put the drive shaft in the vise take the nut off pinion gear and use heat and drive the gear housing off.


What he said [yeahthat.gif]
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Re: How to remove?

Postby mark 55 » Sat Oct 16, 2021 7:53 pm

Got it. Fortunately this was a junk gear case and thus a learning exercise. I destroyed the top of the case beating on it. The roller bearing and the needle bearing blew up.

Took advantage of my newly discovered “talent” to address another stuck drive shaft I tried years ago to separate without success. Lately, I have doused it with penetrant and waited. Had cut the shaft off years ago to make a stand out of. This one came out a bit easier.  Penetrant/heat/patience and when the time comes, FORCE. From my college physics class I recalled Force=mass x acceleration. I needed all I could muster today with my old 23 oz framing hammer.

It’s nice to succeed with the techniques that have worked for others here. Thanks for the direction and advice.  Much appreciated!
Scott
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Re: How to remove?

Postby Bob » Sat Oct 16, 2021 8:34 pm

Scott, sounds like demolition derby going on over at your house.  LOL.  I had to cut open a gear case so salvage a pinion gear.
Think I showed that one to you.
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Re: How to remove?

Postby Yellowjacket » Sun Oct 17, 2021 3:59 pm

The most likely reason you couldn't get the shaft out without cutting the case is that the welding that was done on the case caused it to shrink and that decreased the diameter and made the center parts a very tight fit.  Once you cut the case the "hoop" was broken and it came out easily.  Once they welded the case it wasn't going to come apart without cutting the ring that was tight on the parts inside.
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Re: How to remove?

Postby mark 55 » Sun Oct 17, 2021 5:31 pm

Makes sense. Thanks for the input yellowjacket!
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