1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

[tblshur]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

NMRR sounds like you have the drive shaft out of the lower unit, the only one i did on a bigger motor the drive shaft must be in lower unit first then you slide the lower, with drive shaft and shift lever together into the motor. maybe im not understanding correctly.good luck:joyous:

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Tblshur--- Thats right. The driveshaft is on the motor and I'm trying to slide the LU back in place.

Will add pictures as soon as I can. Sounds like I might have elfed something up

 

[Joe Reeves]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Tblshur--- Thats right. The driveshaft is on the motor and I'm trying to slide the LU back in place.

That's not going to happen!

The driveshaft and water pump must be assembled to the lower unit first as a complete assembly. Go to your local library and look thru the service manual for that MQ-14 (1968 9.5hp Johnson) for the correct procedure.

You need to remove the driveshaft from the powerhead first as we explained in earlier replies. If you refuse to do that, discard the engine.

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Ok it's all coming together now, I have elfed something up haha that's what I get for trying to do something I don't know how to do huh?

So now my question is this, how did the driveshaft pull out of the LU without tearing anything up? And also, does this confirm the fact that the driveshaft is frozen to something even though it just ran on Monday I think?

 

[racerone]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

The driveshaft pulled out of the lower unit and the pin may have damaged the waterpump housing !!----------Now answer this, did you get the driveshaft out of the powerhead ? Are you trying to assemble this with the driveshaft still stuck in the powerhead.--------Running the other day has nothing to do with this driveshaft being stuck in the crankshaft today !!!!

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Racerone--- didn't see anything that looked too bad on the pump housing, will look closer when I get it torn down again. Won't have a chance to work on it much today I don't think. Driveshaft is still in the powerhead but I'm going to try and pry it out before I move forward. Maybe I'm being dumb but I just don't understand how the motor could've run a few days ago (shaft obviously not stuck) and now it's frozen so hard that a hammer didn't jar it loose. Like you said on an earlier post, I can't see how that could happen in such short time

 

[Joe Reeves]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

The driveshaft being frozen in the crankshaft splines does not prevent the engine from running.

Think of the driveshaft on your car or truck being welded to the transmission splines... this wouldn't prevent the engine from running BUT you would have one hellava job removing and dismantling the transmission.

The freezing of the driveshaft DID NOT take place recently.... it has been frozen in the crankshaft for quite some time. Lose the thinking process that the frozen driveshaft has anything to do with the engine running.

Now, when the driveshaft pulled away from the lower unit, the water pump pin slid away from the pump impeller and tore thru the top of the water pump impeller housing... damaging that impeller housing.

 

[racerone]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

You simply can not assemble this untill you get the driveshaft out of the crankshaft !!---And the shaft has likely been stuck in the crank for years.----Perhaps you will understand when it is out of there.---------The shaft normally slides out of the crankshaft when the lower unit is removed !

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Yeah I see what you guys are saying.. Hopefully I can get to work on it this evening or maybe tomorrow but I know what has to be done so I will let you guys know the outcome. Hopefully I don't rip anything else apart getting the driveshaft out of there! But like I said earlier, this was a free motor that we didn't even know we had until a couple months ago so if it winds up being more trouble than it's worth it's not a huge loss, although it would be nice to get a free step-up from my old 5 1/2 horse!

thanks for the help fellas! Again, sorry for my ignorance. I think I'm over thinking it an making it more complicated than it is just because I've never worked on one before but If you guys ever need help figuring out a dirt-bike, fourwheeler, chainsaw, or anything like that then I can repay the favor! haha

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Ok guys I don't like to admit defeat, but I have been defeated

I have hammered and pryed, and hammered and pryed some more.. Then a little more after I got done with that.. Anyway I have poured WD-40 and penetrating oil down the shaft and let it soak a couple days with no positive results. I can't really get a good angle to really put a sledge swing on it and I'm afraid to pry too hard on the housing and break it or bend it.. Any other ideas I can try before I completely dismantle the motor?

 

[AlTn]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

try what Joe mentioned in Post #5 with the vicegrips and pliers in a nonseal area of the d/s...

 

[Joe Reeves]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

Any other ideas I can try before I completely dismantle the motor?

Nope... This is your only route unfortunately.

If the driveshaft still doesn't loosen, you are faced with removing the starboard casing, then removing the engine from the port casing, after which you need to remove the powerhead from the long exhaust housing. At this point you can lock the driveshaft in a vice and carefully apply a wood block and hammer to the block to free the driveshaft.... or whatever you may be able to dream up... a hellava job!

 

[NorthMsRiverRat]

Re: 1968 Johnson 9.5 Water Pump Problem.. HELP PLEASE

That's what I figured.. Got any special recipes for good penetrating oil? Used a trick my grandpa taught me back in the day but this is too much for it too