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Help! Bomar port light dogs-gctid804343

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    Help! Bomar port light dogs-gctid804343

    I hate opening my portlights but yesterday I attempted to open the starboard port light nearest the closet in the master berth on my 4588. Latch #1 released with moderate twist pressure. The rearmost latch #2 dog thread post sheared off.

    Now my nightmare is the scews in the frame that mount the dog base are 27 years seated & corroded. Before I try to back out those Screws I have soaked with wd-40. Is that going to allow release of those screws?

    Any tips?

    #2
    Wd40 is often used as a penetrant, but it's really designed to be a water displacer from my understanding. Use some Penetrol or similar and let it soak. Try to get some around the bottom of the nut because the nylon thread lock in the nut is going to impede any fluid from getting in the threads. Next, and this is just me, file the threads flat with the top of the nut. In my experience, I've noticed that a large number of my bolts have been broken off at the nut. Maybe the philosophy was to buy a standard length and cut/break to length rather than have all sorts of length fasteners requiring all kinds of tracking and under length fasteners being installed.

    Us a good, hollow ground screwdriver at the head end then work the nut and bolt gently. If the head fails, use the cross grooves as a pilot and drill an undersized hole just enough to clean the hole up and go just deep enough to go through the head of the bolt. Next use a number ten or just over fractional drill bit to remove the head of the bolt. Then you can take a small punch to drive the remaining bolt out of the hole. It's actually easier than it sounds the biggest issue is keeping alignment with the bolt shaft.

    Let us know how it goes.
    P/C Pete
    Edmonds Yacht Club (Commodore 1993)
    1988 3818 "GLAUBEN”
    Hino EH700 175 Onan MDKD Genset
    MMSI 367770440

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      #3
      Still looking for the replacement parts: Knob, Spacer, Post, latch, etc. What a pain.

      It appears that the threaded post can be replaced by punching out the drift pin but I still need the parts.

      Comment


        #4
        You can get them on Amazon. I've bought a few. Easy to replace. Just get a small pin driver and tap the pin out. Goes back the same way.

        I'll see if I can find them for you. Was awhile ago.

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          #5
          Is this what busted?


          Comment


            #6
            www.jamestowndistributors.com

            If it is, here's a place to get them.

            In the Search box, type BOMAR HATCH PARTS....there they are

            Comment


              #7
              Closest I can come to the needed latch/dog is NIBO/BOMAR P10009 which is a round knob and appears to be post/ latch, spacer, and ROUND knob.

              The originals have oval knobs labeled BOMAR.

              Appears to require knocking out the drift pin in the fame mounted base/receiver and reinstalling the drift pin.

              I just need to close and seal that port light.

              When did the dream of my life become a "Collector's Item".

              Comment


                #8
                Okay, time for a picture of what broken and a good one.
                P/C Pete
                Edmonds Yacht Club (Commodore 1993)
                1988 3818 "GLAUBEN”
                Hino EH700 175 Onan MDKD Genset
                MMSI 367770440

                Comment

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