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Compass Marine How To | all galleries >> Welcome To >> PSS Shaft Seal Installation > The Coupling Has Started To Move
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The Coupling Has Started To Move

The Coupling Has Started To Move

In this picture you can see the effect, and penetration, of the PB Blaster penetrating oil. The coupling has broken free and is beginning to come off through the tightening of the bolts.

If you have trouble getting the shaft and coupling apart you can heat the center of the coupling very slightly with a heat gun (make sure you have an extinguisher on hand just in case) heating it in the CENTER will draw the PB Blaster into the coupling due to capillary heat draw.

Nikon D70
1/30s f/4.5 at 62.0mm full exif

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John 10-May-2008 01:01
Be careful with PB Blaster. It's great stuff for loosening metals, but it dissolves plastic and rubber. I've heard of cases where it got it the transmission, and the owners found all the transmission fluid in the pan/bilge the next day. PB Blaster will dissolve transmission gaskets completely overnight. Good news is the coupling comes apart; Bad news is the transmission now has to.
Guest 18-Apr-2007 17:58
Be careful not to ignite the PB Blaster... ;)