Cracked Bearing Carrier Assembly. Cause?

[lncoop]

I just picked the barge up from the upholstery shop today and took her down to the river for a first of the season shakedown cruise. I backed her in and fired up the motor only to discover I had no reverse. My first thought was a spun hub, so I popped it in forward to see what would happen. Forward was strong, so I pulled up out of the way to investigate. I pulled the prop and found this. From what I understand that's the outside of the bearing carrier assembly. It's broken on top and bottom and the light gray is the distance between where it is and where it should be. I can push the shaft in at least half an inch and probably more.

What could have caused this? We went to check on the boat last week and it had been moved. Could they have backed the prop into another trailer tongue or something hard enough to do that? If so, would that have caused the loss of reverse? What are the the other possible causes? I think I would know if I had hit something in the water hard enough to do that kind of damage, and my top speed is around 25, so that seems unlikely anyway. And, it worked fine last time I ran it. If the upholsterer caused this I want him to take care of it, but I don't want to blame him unfairly. Thoughts?

 

[emckelvy]

Re: Cracked Bearing Carrier Assembly. Cause?

Several of the pics show skeg damage, so I wonder if maybe it's hit something in the past and weakened the carrier.

I'd think that if it was damaged recently at the shop, the prop would be munched as well. Hard to imagine an impact that could do that damage and not severely damage the prop, too.

Looks like a new bearing carrier is in order, at least it'll come apart easily enough!

G'luck........ed

 

[gm280]

Re: Cracked Bearing Carrier Assembly. Cause?

I too don't see how the upholstery shop could have possible done that. A few parts and a little work and you'll be boating again in no time... WOW a 1/2" endplay...:facepalm:

 

[lncoop]

Re: Cracked Bearing Carrier Assembly. Cause?

Skeg damage was already there when I bought the boat. Supposedly the LU had been replaced just before I took it home, but who knows.

 

[Faztbullet]

Re: Cracked Bearing Carrier Assembly. Cause?

That typical freeze damage from contaminated gear oil, water froze and expanded pushing out carrier.

 

[lncoop]

Re: Cracked Bearing Carrier Assembly. Cause?

That typical freeze damage from contaminated gear oil, water froze and expanded pushing out carrier.

Okay, I never thought about it, but that makes sense. What am I looking at now? New LU, or are there changeable parts? Also, Fazt, are you saying the water was already in there? I ask because I always leave the motor in the down position all winter.

 

[Faztbullet]

Re: Cracked Bearing Carrier Assembly. Cause?

Buy a new carrier.seal kit and inspect all bearings...

 

[lncoop]

Re: Cracked Bearing Carrier Assembly. Cause?

Buy a new carrier.seal kit and inspect all bearings...

Even though I've lost reverse?

 

[emckelvy]

Re: Cracked Bearing Carrier Assembly. Cause?

The reason why you lost reverse is that the bearing carrier (and reverse gear) have moved to the rear, and reverse gear has either lost contact with the pinion gear, or (more likely), reverse gear has moved out enough that the dogs in the shift clutch can no longer engage the dogs on the reverse gear.

The reason why you still have forward gear is that fwd gear is on the other side of the pinion gear and is "captivated" in its normal place. As long as the spring-loaded shift clutch can engage the dogs in the fwd gear, you'll have drive in that direction.

You'll have to drain out any remaining oil before disassembling the L/U; take note of any water contamination. The most likely place for leakage is from the driveshaft oil seals, but it's a good idea to inspect everything and renew/reseal as necessary.

BTW you may be able to find a "scrapper" motor on your local Craigslist or a good used L/U on eBay, but depending on the extent of the damage, it may be cheaper to rebuild yours.

HTH & G'luck..........ed

 

[X2Blaster]

Re: Cracked Bearing Carrier Assembly. Cause?

I came across this very issue on my 1993 mariner 90 a couple weeks ago. Forgot to change the gear oil and it popped the bearing carrier out.
I picked up a new one and went to install it but it won't set in all the way, leaves about a 1/4" gap. Is something stopping it or should I put the bolts in and use them to pull the carrier in?
Before I can even attempt at putting it back together, I need to get behind the forward gear. It looks like there is more damage behind it. I found 2 small balls on the forward gear and what looks like a small dowel pin laying sideways just behind the gear. I know they are suppose to be there, just by looking at the parts diagram, but have no clue how they go back together. Do I need to pull the lower unit and drive shaft to get the forward gear out?

 

[billblanken1]

Re: Cracked Bearing Carrier Assembly. Cause?

I came across this very issue on my 1993 mariner 90 a couple weeks ago. Forgot to change the gear oil and it popped the bearing carrier out.
I picked up a new one and went to install it but it won't set in all the way, leaves about a 1/4" gap. Is something stopping it or should I put the bolts in and use them to pull the carrier in?
Before I can even attempt at putting it back together, I need to get behind the forward gear. It looks like there is more damage behind it. I found 2 small balls on the forward gear and what looks like a small dowel pin laying sideways just behind the gear. I know they are suppose to be there, just by looking at the parts diagram, but have no clue how they go back together. Do I need to pull the lower unit and drive shaft to get the forward gear out?

Don't know if any one answered you but yes your lower is messed up. The balls are from cam follower which is located in the back end of drive shaft assembly. The cam which is behind the forward gear. It is a major repair not difficult just a lot of time.