[C320-list] winches

[Jeff Hare]

The embedded aluminum plates in the deck MAY be threaded when there is no access to the backside.  Machine screws are used of course, not wood screws.  When the backside is reachable the holes may or may not be tapped, I don't know for sure.  A backing nut and lock washers may help prevent the screws from loosening even when tapped.

The reason for different length screws may have something to do with the angle the turning blocks are sitting at on deck.  But I recall that Dick Walker had Garhauer make him a new set of turning blocks that are far superior to the stock lewmar ones. Kat least on the pre-mkII models.

Jeff



jim brown <jbrown5093 at yahoo.com> wrote:

>I'm not sure why a backing plate would be tapped and then have the
>fitting screwed down (especially with different size screw-I've found
>enough extras in my boat to never have to by replacements) rather that
>using bolts machine bolts. I didn't know you could tap a backing plate
>for screws. 
>
>Jim Brown
>
>
>
>
>________________________________
> From: Warren Updike <wupdike at hotmail.com>
>To: C320-List at Catalina320.com 
>Sent: Friday, May 17, 2013 9:06 AM
>Subject: Re: [C320-list] winches
> 
>
>This is for Arthur Miller and others re. the turning blocks for the
>primary
>winches.  
>
>Following applies to the stbd turning block.  The port block is easily
>accessible from the port cockpit locker.
>
>I had no trouble removing the screws with a large screwdriver that fit
>the
>Phillips screw head perfectly.  You may need a little help with pliers
>to
>start.  
>
>I found the block was bedded by Catalina with silicone, so that is what
>I
>will use.  
>
>I assume the backing is a tapped plate.  The threads all seem to be
>found
>about ½” below the surface.  While Catalina designs are good, cheap
>assembly
>labor may work against the quality as I found the screws were each
>different
>lengths.  One was so long that it protruded the deck into the space
>between
>the deck and liner.  
>
>Re-assembly should be fast and easy.  Be sure to give the screws an
>extra
>shot of bedding just before seating them.
>
>Any advice/suggestions from the list will be appreciated. 
>
>
>
>Warren & Pattie Updike
>
>1994 C320 #62 "Warr De Mar"