1989 Force 50 impeller/drive shaft problem

[Last_TT]

Hello:
When I pulled the lower unit off to replace the water pump impeller, the brass/bronze retainer came out with the drive shaft. It is tightly held onto the shaft about an inch below the drive spindles and looks like the previous person hammered or pressed it on the shaft and scared the drive shaft.

I assume that the retainer will have to be replace after the drive shaft is smoothed out. Anyone have another solution or an easy way to do this?


1989 Force 50 # 507X9A

 

[bentle]

Re: 1989 Force 50 impeller/drive shaft problem

Some pictures of that drive shaft and retainer would be helpful here.

 

[Last_TT]

Re: 1989 Force 50 impeller/drive shaft problem

Here is my first try at pictures. I got the collar off by inverting the drive shaft, then using a piece of wood to tap it off. I could not get a good picture of the scaring on the shaft. I plan on buffing the scaring with emery cloth or very fine (1000+) sandpaper (is this a good idea?)

I have a 3 to 4 day wait on parts,so I have time to ponder how to put it back together and see why I have little water @ the tattle tail.

 

[Last_TT]

Re: 1989 Force 50 impeller/drive shaft problem

2nd try at pic



Disregard the 1st pic of the floor. :facepalm:

 

[86-vip]

Re: 1989 Force 50 impeller/drive shaft problem

very little water comes out the tattletale most of it comes out the bottom with the exshaust

 

[bentle]

Re: 1989 Force 50 impeller/drive shaft problem

Looks like the wrong kind of retainer was used.
The actual part should be flat on one side and have a kind of opening on the other where the
drive shaft boot sits into. As long as the splines are not damaged badly then you should be ok. Lightly smooth it off like you stated so that the new part slides on easily.

 

[wickware]

Re: 1989 Force 50 impeller/drive shaft problem

From a diagram if you have one, was there a retainer vs pressing that was to hold this bushing in place? Was the bushing?s housing possibly spun and w/n hold the bushing if pressure is the retainer? After you dress the shaft, is there a way to add an oversized bushing in the housing (if this is a problem that has been addressed)? Otherwise, can you shim or retain it yourself with sheet brass on the outside? I doubt this is a first and research from dealers/mechanics should provide a solution.

Please post a pic of the water from the Tell Tale for comments on the volume. Good Luck! jow

 

[BlkY2k]

Re: 1989 Force 50 impeller/drive shaft problem

I cant help you with the retainer problem, but do yourself a favor and install a telltale while you got it apart. Its a great piece of mind to start the motor and be able to glance back and see the stream of water coming out and know its working right. The guide at the top of the page will take you through it and its only a couple of bucks for parts. Heres a pic of mine.

Mine is 3/8 hose down to the housing then i used a 3/8 to 1/4 hose barb, drilled a 1/4 hole slid the barb through and a small piece of 1/4 hose on the outside to hold it in place. It shoots right out there where you can see it. I find myself looking for it all the time now and no more wondering if the pumps working.

 

[jerryjerry05]

Re: 1989 Force 50 impeller/drive shaft problem

The bushing is for the rubber boot that goes on top of the drive shaft.
No water flow or low output.Bad impeller,wrong muffs.Not installed right.Clogged exhaust passages????
The wrong muffs can cause it to overheat or low flow. The site won't let me post a pic of the right muffs.
PM me with an e-mail addy and I'll send you the pic.J

 

[tater76]

Re: 1989 Force 50 impeller/drive shaft problem

You can omit the collar folks. As Jerry said, its to hold a rubber boot that supposedly holds grease on the splines of the driveshaft. I would say about 50% of the motors I have seen don't have them anymore. Just lube up the splines with grease, but NOT the top of the shaft, reinstall and go.

 

[Last_TT]

Re: 1989 Force 50 impeller/drive shaft problem

The collar is item 56 on bentle's post above. Does everyone agree that it is not needed? It would make things alot easier if it wasn't needed.

I had read somewhere in this forum, that you could test the water pump by spinning the shaft with a drill. I plan on trying that after replacing the impeller and seals above and below the pump housing.

As for the amount of water out of the tattle tail, it might be the size of the opening in my 3/8 fitting. The amount of water was not why I was doing the impeller. The impeller change is because of all the post I have read about overheating, coupled with finding the overheating alarm was disconnected made me nervous about going far from shore (something about banjo music and padding faster is not my style).

If you haven't guessed by now this is a new project for me. This year make sure it floats and goes, next year make her look good.

Thanks for your help so far.

 

[tater76]

Re: 1989 Force 50 impeller/drive shaft problem

When you dropped the lower unit did the boot come out with the shaft? it may be stuck up in there. If you can retain the boot and retaining collar then reuse. However, if the boot is missing and collar buggered up leave it off. Impeller change is a yearly tradition with me. I think $15-$20 bucks for a new one each season is cheap insurance.