Lower Unit Damage
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Posted on Saturday Jan 26, 2013 at 4:19 PM  
I went to the lake this afternoon and as I was unstrapping the motor I noticed that the prop didn't spin freely. A quick inspection revealed that the prop was rubbing against the housing and I could see cracks in the webbing behind the prop.


After I got home and took the prop off the adjusting nut just slid right out. The threads inside the housing are completely gone...


I assume that I will need a complete unit?

I'm guessing that I'm a victim of water freezing inside the lower unit. I never thought to take the transom saver off and lower the motor like I usually do in the winter...
Posted on Saturday Jan 26, 2013 at 6:11 PM  
Are you sure the housing threads are gone? You definitely froze it and the webbing stretched outward on the gearcase nut when it did. If the threads on the housing are still there , you can get a new hub seal housing.

Unusual because it looks like it froze in the oil case - if thats so you were about to crater regardless. (more water than oil.)

It fell out because it stretched/cracked, as long as ya got to go that far into it ,seals/ new cups and cones too- they aren't hard to rebuild, almost like a wheel bearing hub replacement - and look on e-bay lots of good deals on parts for rebuild.

After you replace, you screw it in W/O any lube (dry) until the prop shaft will only turn about a 1/2 turn on a spin, lock down the set screw and fill er up with hypoid gear oil - use your manf. recommended oil.
Those who would give up constitutional freedoms to elected officials in exchange for a false sense of security, deserve neither freedom or security.
Posted on Saturday Jan 26, 2013 at 6:58 PM  
There are at least some threads left. I'll have to dig in to it a little deeper to see what it looks like.

I'm sure it had some water in the gear case, because the prop shaft seal is shot...
Posted on Saturday Jan 26, 2013 at 8:30 PM  
I went back out to the garage to look at the nut again and it is packed with alluminum threads... It looks like I'll need at least the housing, hub, bearings, and seals.
Posted on Sunday Jan 27, 2013 at 6:48 AM  
I may have a case have to look around. Merc V6 what year ? Call Frankies in Grove and he will have probaly all the parts you are looking for used. If ya need me to pull the carrier bearing out for ya just let me know. You will also need my shift shaft tool
Posted on Sunday Jan 27, 2013 at 12:35 PM  

Let me know if you have one.

Thanks a bunch!
Posted on Tuesday Jan 29, 2013 at 1:23 PM  
I dont have that case. A used one should run ya about 100-150. Frankies or Genes in Grove is where I would start.
Posted on Tuesday Jan 29, 2013 at 1:41 PM  
Okay. Thanks for looking.

I need to get mine torn down to see what all I'm going to need and then I'll call around to see what I can find...

I may be calling you if I need some help.
Posted on Tuesday Mar 5, 2013 at 12:54 AM  
i had this happen to my 81 merc at one time but it pulled all the threads and pushed the whole thing out. i took it up to kyle at copan marine he fixed me right up. might just take it in and see what a shop thinks.
Posted on Tuesday Mar 5, 2013 at 1:46 PM  
A fellow Notebooker just happens to have a good case, so I should be able to swap some parts out, buy some seals and bearings, and be good to go.
Posted on Monday Mar 11, 2013 at 7:37 AM  
All bearing on that case are pressed on you will need a shift shaft socket case nut tool and drive shaft cap tool.
Posted on Monday Mar 11, 2013 at 9:12 AM  
Yeah, beans. I picked up the new case yesterday, which is really a complete lower unit partially disassembled. The bearing cage has been removed and it is not what I pictured. I thought it would just have a race on the back side of it, but it's an assembly back to the gear, as I'm sure you know.

My plan was to use all the gearing out of my unit. The gears in the unit that I got aren't bad, but the clutching teeth are starting to get a bit rounded. I haven't pulled mine apart yet, but I'm hoping mine are in better shape. I know I haven't had any problems shifting in and out of gear.

I can usually figure stuff like this out, but the lack of the proper tools could make this one tougher than I hoped. I may be calling you for some help before it's all said and done...
Posted on Monday Mar 11, 2013 at 12:27 PM  
Just text me and I will meet ya and help ya swap it out.
Posted on Monday Mar 11, 2013 at 12:51 PM  
Call me I have a deal for ya.
Posted on Sunday Mar 17, 2013 at 10:37 PM  
I got the Champ fixed and back on the water. A big thanks to both Nelli and Beans!
Posted on Monday Mar 18, 2013 at 9:42 AM  
Awesome, glad I had what you needed and could help!
Posted on Monday Mar 18, 2013 at 10:57 AM  

You mentioned changing the fluid in my unit after I ran it. I ran it maybe two miles on Saturday. Do you think I should go ahead and change it or run it some more first...?
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