Monday, May 2, 2016

Replacing the Packing Gland with a Dripless Bearing

  Here's what the proper installation of a PSS looks like.  The box of the old packing gland (the bronze member athwart the prop shaft) is left bolted in place.  The original raw water supply line is plugged.  The plug is clearly visible between the two bolt heads. The old gland's packing and locking nuts have been removed.  In their place is the PSS' bellows.  The bellows is slid over the old gland's threads and then hose clamped in place.  The raw water supply line had been connected to the PSS' barbed fitting.
 

Sally W 37VT42 Dripless Packing Gland

  Bottom line: leave the box of the old gland in place.  It severs as a pillow block, water whetted, journal bearing.  Remove it and the prop shaft will whip.

  Note: On Nellie D. raw water is supplied to both the old box and the PSS.  I don't know this is better only that it's different than the installation pictured above.

  Dave Howell, Nellie D. 37VT63

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