Topic: Stuck Prop? – Antique Outboard Motor Club,Inc

This topic has 15 replies, 9 voices, and was last updated 6 years, 5 months ago by amuller.

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October 8, 2017 at 3:20 pm #8421
kevinrude
Participant
Well, I’ve never had this happen before.

Working on a 3HP 1947/48 MW motor. Removed the cotter pin and the prop nut, but the propeller won’t come off! It is stuck. The prop is engaged with the gears, so the only thing I can figure is that the shear pin is bent or something and, as a result, has wedged itself onto the prop. Would anything else cause it to be stuck like this? I can’t see any other bolts or screws holding the prop on and the parts diagram I have doesn’t show any either.

I don’t want to put any more pressure on the prop than I already have trying to remove it for fear it will break. So, what are my options here? Tapping around the prop hub with a mallet? Heating it up with a torch to see what happens? I’m open to suggestions.

Thanks!
October 8, 2017 at 3:52 pm #65915
outbdnut2
Participant
US Member
You could have a rusty propshaft – try soaking in penetrating oil. Then keep on tapping with a rubber mallot. It may take a few days of soaking.
Dave
October 8, 2017 at 4:45 pm #65922
squierka39
Participant
US Member
I had the same thing happen with a champion. On mine it ended up being dried up oil and goo sticking it on like glue. I soaked it for months then made a puller for it, put some pressure on it and heated it. It finally popped off. Cleaned up the dried and no burnt oil and both prop and shaft are fine.
October 8, 2017 at 4:48 pm #65924
frankr
Participant
US Member
It is being held on by rust and corrosion. Heat will help by expanding the aluminum. One problem with that is the prop is mostly hollow, so you are heating the outer part without effectively getting it hot around the center where is is actually stuck to the shaft. But it’s still your best hope.

Kevin, you mentioned you have never seen this happen before. With all respect, I gotta say you must have lived a protected life (far away from salt water too).
October 8, 2017 at 6:18 pm #65925
chris-p
Participant
Or you haven’t worked on a Merc! I can remember my first few stuck props on a steel shaft. Terrible compared to dealing with an OMC.

On 2 or 3 Mercs I have had to cut the blade off in pieces.
October 8, 2017 at 11:55 pm #65931
garry-in-michigan
Participant
Lifetime Member
Is this your model ? . . . 😕
October 9, 2017 at 12:02 am #65933
garry-in-michigan
Participant
Lifetime Member
That 132092 shear pin is also used on the Evinrude Sportsman and Sportwin . . . 🙂
October 9, 2017 at 12:46 am #65935
kevinrude
Participant
quote Garry in Tampa:

Is this your model ? . . . 😕

Yep, that’s the one!
October 9, 2017 at 12:48 am #65936
kevinrude
Participant
quote FrankR:

It is being held on by rust and corrosion. Heat will help by expanding the aluminum. One problem with that is the prop is mostly hollow, so you are heating the outer part without effectively getting it hot around the center where is is actually stuck to the shaft. But it’s still your best hope.

Kevin, you mentioned you have never seen this happen before. With all respect, I gotta say you must have lived a protected life (far away from salt water too).

Yeah, the only time we see salt water in Michigan is when grandma gets sick of looking at the leeches in the pickle jar and wants them deceased!
October 9, 2017 at 1:47 am #65937
garry-in-michigan
Participant
Lifetime Member
You may as well have the rest . . . 🙂
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