1955 Johnson 10hp QD16 - Impeller Replacement

[fishchaser]

I'm in the middle of replacing the impeller on my classic. Never done it before. Looks like there was some type of sealant around the connection from lower gear housing to upper housing and around the impeller casing. No gasket material found.

I'm curious if either is required? Did a quick search here and only found one post that addressed this. The response was to put it back to together dry.

Any other opinions or prior experience?

Thanks, I'm kinda holding for now, but will put it back together clean and dry in the absence of other responses.

 

[Scaaty]

Re: 1955 Johnson 10hp QD16 - Impeller Replacement

You could slightly slather a touch on the edge's of the impeller plates, put some marine grease on the screws. Upper/lower just bolt up (again, little grease on the threads)

 

[fishchaser]

Re: 1955 Johnson 10hp QD16 - Impeller Replacement

Thanks for the info.

Marine Grease???

 

[HighTrim]

Re: 1955 Johnson 10hp QD16 - Impeller Replacement

you can find marine grease at pretty much any parts store or marina, resists water better than normal grease, gl

 

[rofiling]

Re: 1955 Johnson 10hp QD16 - Impeller Replacement

I.m going to replace the impeller of my 1955 10hp QD 16 . I need to remove the powerhead. In the somway like 5.5 hp model. Thanks

 

[jbjennings]

Re: 1955 Johnson 10hp QD16 - Impeller Replacement

There's no need to remove the powerhead to replace the impeller on a qd16. There should be a small 2" oval "window" on the side of the midsection with 2 screws holding it on. Underneath will be the brass shift shaft connector. Totally unscrew the bottom retaining bolt. When you put it back together, make sure the groove in the shift shaft is perfectly centered with the bolt hole of the connector or you will wipe the threads off the shift shaft retaining bolt when you screw it in. There's no need to put any sealant on the lower unit to midsection housing surfaces. I like to put a little grease on the impeller blades to make it easier to seat the impeller into the housing (a handy tip told to me before on this forum). DON'T lose the tiny key that fits in the drive shaft which turns the impeller, and don't forget to replace the rubber o-ring on the top of the drive shaft.
good luck,
JBJ