Johnson water pump seated correctly or not?

[QuickPuppy]

I’m attempting to replace the water pump on a 1999 Johnson 115 HP outboard…
I’ve noticed that on the bottom of the water pump where it meets with the lower unit surface, two of the bolt holes seem to be raised compared to the other two. The pump that I took off has the same thing. This seems to cause the pump not to seat properly as I can see light underneath the pump housing on the side that has the slightly raised bolt holes when it is screwed down.
Is this normal?

 

[F_R]

But aren't the raised areas equal to the raised rim surrounding the pumping cavity?

 

[jakedaawg]

The cup appears to be spun in the housing...

 

[racerone]

Don't worry about the gap and " raised " portions.----But post a picture to see if the cup is installed correctly.

 

[QuickPuppy]

After I posted I did take a closer look and yes,the raised portions on the bolt holes are equal to the raised portion of the pump chamber. So it’s probably fine and I just installed it 3 times for the practice.

I believe the cup is installed correctly... the little tang on the bottom of the cup is sitting in the brass hole in the base and the lip is lined up with the outlet.

I’m trying to find the spec for shift rod height but so far all I’ve found was 21 29/32 to 21 31/32. That measurement is longer than the rod when it just begins to touch the threads in the gear case. Engine is a 1999 J115PLEEM.

I am also having a problem getting the lower unit back onto the rest of the engine. It will not push all the way in.

 

[racerone]

I see 21 1/4"-----Is this a replacement lower unit ?----If so is it the correct lower unit ?----Post some more pictures of it.

 

[QuickPuppy]

Original lower unit as far as I know

 

[jakedaawg]

If the lower doesn't seat all the way home just slightly turn the flywheel clockwise to engage splines. Above assumes you're not binding shift rod or alignment pins or water tube.

 

[jakedaawg]

That cup appears spun in housing...fins of impeller appear more compressed at intake side of pump. Suggest a pic from farther away and looking a little more down it. You are correct that there is a definitive tang and corresponding socket for it. Usually I put the impeller on the shaft and seat the housing over it spinning the shaft clockwise as I press the housing down. I say this to explain that I am not used to looking at an inverted housing with a new impeller in it. Disregard my posts if I am seeing things that are not there...sorry in advance.

 

[QuickPuppy]

21 1/4 inches appears to be the correct number. Got everything back together again but I have question about the shift rod… Is it supposed to be this far forward in the hole? It appears to be like this in all shifter positions. It does seem to shift into forward,reverse, and neutral smoothly and in the right positions.

 

[QuickPuppy]

 

[QuickPuppy]

... and yes, the arrow shaped rubber shift rod seal is missing in this pic... I found it laying on the ground after I had it together. So the first time taking it apart and putting it back together was practice.

Anyone know where this plastic clip goes? I found it wedged in the lower cover when I was cleaning them. It looks like it fits a fuel line pretty well.

 

[jakedaawg]

The bent angle at top of shift rod goes forward...

 

[SweetD]

I had an issue with my shift rod getting bound up on the housing a couple of years back due to the lower motor mounts having corroded and sagged. Sounds like you are shifting smoothly though, so not sure that is an issue for you...

 

[QuickPuppy]

Whoops... I thought that I had bent the shift rod when I was dropping the lower unit. (I was hung up on the clip that holds it and the weight of the lower was all on the rod.) I unbent what I thought I had done. That would explain the forward cant that I have now. doh!

 

[QuickPuppy]

Now that I’ve done the job before it only took an hour to get the thing off, rebend the rod, and get everything back together. The rod is now centered in the hole and it shifts a bit smoother.