Crankshaft condition

[fleetwin]

salnaes wrote:

This weekend I bought two Johnson 20hp 1967. Now I will take out the crankshaft from both and check their condition. If one of them looks fine, I will exchange my crankshaft, which is pitted and leaking fuel, with the best Johnson crankshaft. I appreciate all good help on this matter, and if none of the Johnsons have a proper crankshaft, then I will try all advices you’ve been willing to share with me. Thank you for all help.

Again, please don’t pull that powerhead apart until you have removed your upper seal to confirm that the crankshaft pitting is causing an issue.  Again, perhaps the seal is just bad, or perhaps misinstalled.   I just don’t want to see you rip that freshly rebuilt powerhead apart unless a problem in confirmed with crank condition…

[Crowsbeak]

Here is a photo from when I tore my 15032 18 Hp down. It looks like there might be a bit of room where you could adjust where the seal rides.  Perhaps a nylon spacer or washer could be added between the upper bearing and the seal?

1954 Evinrude 7.5 HP
1954 Evinrude 15 HP
1954 Gale 12 HP
1955 Johnson 10 HP
1956 Johnson 10 HP
1956 Gale 12 HP
1956 Evinrude 5.5 HP
1958 Johnson 7.5
1960 Evinrude 18 HP
1973 Johnson 6 HP

[salnaes]

Ok, I’ll give it a try. Thanks

[fleetwin]

Again, please don’t pull that powerhead apart until you have removed the seal and have a look…

[Author]

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