Stuck Defective Grease Fitting on Lower Unit

59Thompson

Petty Officer 3rd Class
Joined
Sep 10, 2009
Messages
76
The original grease fitting ball is buggered up and rusted. I have a SS replacement fitting. Looking for tips on removing, I'm thinking some Kroil to soak, then some heat and then using a grease fitting removal combination tool with its wrench and extractor and tap if needed. Thanks in advance for recommendations.
 

kenny nunez

Captain
Joined
Jun 20, 2017
Messages
3,290
The thread pitch on grease fittings is 1/4”-28. You will need a bottoming tap to clear the threads. A starting tap will end up damaging the threads because of the pointed starting feature.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,073
Just keep in mind that your dealing with a steel fitting in a much softer aluminum housing.
It will not take much to remove the fitting one way or the other....;)
 
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