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Westerbeke instrument panel getting hot

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  • Westerbeke instrument panel getting hot

    Hi,
    I just bought a sailboat that has a TwoB 20 westerbeke. It runs fine but while I was poking around I noticed that the instruments are getting very warm. Too hot to touch.

    Ideas ? Should I run a new ground wire ?

    Thanks in advance

    Jon

  • #2
    Unable to find a TwoB 20 or B 20 with a quick search.
    94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
    95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
    07 SeaDoo GTX
    Raw Water Pump Maintenance
    Merc Adults Only
    G-Dad always said "First Liar doesn't stand a chance"

    Comment


    • #3
      Sorry about that. It is a 20B two. The instrument panel is grounded through harness that plugs into the motor. There is one ground wire what comes in and then jumps from instrument to instrument.

      Jon

      Comment


      • #4
        I guess the panel is remotely mounted, so it isn't engine heat.

        What gauges are in the panel? Can you tell if a single gauge is hotter?

        About the only one that has a lot of electrical power through it is an ammeter.
        BOAT SPECS FORUM HELP STARCRAFT FORUM SHOP iboats
        Please, no PM's (Private Messages) regarding boat/engine problems.
        That is what the forums are for.
        Only forum/moderator issues will be answered in PM's.

        Comment


        • #5
          im guessing the contacts on the back of the ammeter are dirty
          1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - http://forums.iboats.com/forum/owner...988-rogue-2420

          Past Boats
          1970 Wooster Hellion - Merc 9.8
          2002 SeaRay 190BR - 5.0 - A1G2 - "Cheasheads in Paradise"
          1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

          What’s behind you doesn’t matter.Enzo Ferrari

          Comment


          • #6
            Hi,

            Thanks for the responses !!! It is a very basic gauge set, and is remote, so it is not engine heat.

            Oil pressure
            Temperature
            Tach
            Ammeter

            As an aside, I was assuming the ammeter wasnt working because it is pegged over to the right. I have measured the output with the engine running and it is 14.4V

            jon

            Comment


            • #7
              the ammeter measures amperage.

              a volt meter measures voltage

              full output of the alternator is going thru the ammeter. if its pegged and getting hot, the contacts are dirty.... PERIOD. clean the contacts so they are nice and shiny enough to eat off them, then seal the connections with marine electrical varnish.
              1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - http://forums.iboats.com/forum/owner...988-rogue-2420

              Past Boats
              1970 Wooster Hellion - Merc 9.8
              2002 SeaRay 190BR - 5.0 - A1G2 - "Cheasheads in Paradise"
              1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

              What’s behind you doesn’t matter.Enzo Ferrari

              Comment


              • #8
                Will Do ! Can I confirm that as the issue by just disconnecting the gauge ?

                jon

                Comment


                • #9
                  No, full current runs thru the ammeter - its part of the circuit. you can shunt it, however at that point, why not clean the corroded connections up.
                  1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - http://forums.iboats.com/forum/owner...988-rogue-2420

                  Past Boats
                  1970 Wooster Hellion - Merc 9.8
                  2002 SeaRay 190BR - 5.0 - A1G2 - "Cheasheads in Paradise"
                  1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

                  What’s behind you doesn’t matter.Enzo Ferrari

                  Comment


                  • #10
                    One more thing to check if cleaning the ammeter connections doesn't help is to check where the ammeter load is connected. One connection is the feed from the alternator, the other is the load which feeds the electrical system. The load connection(s) may need cleaning as well.

                    And the ammeter could be bad.

                    All I can find is operator manuals with voltmeters. Do you have any manuals for your Westerbeke with an ammeter?
                    BOAT SPECS FORUM HELP STARCRAFT FORUM SHOP iboats
                    Please, no PM's (Private Messages) regarding boat/engine problems.
                    That is what the forums are for.
                    Only forum/moderator issues will be answered in PM's.

                    Comment


                    • #11
                      I'm thinking with the amp meter pegged, its the amp meter that is shorting out. Either that or the battery is. This is from the manual
                      Click image for larger version

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ID:	268117

                      94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
                      95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
                      07 SeaDoo GTX
                      Raw Water Pump Maintenance
                      Merc Adults Only
                      G-Dad always said "First Liar doesn't stand a chance"

                      Comment


                      • #12
                        All,

                        I have to claim ignorance........... No ammeter, just a volt meter.

                        Ideas?

                        Jon

                        Comment


                        • #13
                          Originally posted by JonRiley56 View Post
                          All,

                          I have to claim ignorance........... No ammeter, just a volt meter.
                          So the Voltmeter is pegging?
                          94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
                          95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
                          07 SeaDoo GTX
                          Raw Water Pump Maintenance
                          Merc Adults Only
                          G-Dad always said "First Liar doesn't stand a chance"

                          Comment


                          • #14
                            I Went down to the boat this morning to make sure I have my story straight. Here is what i observed:

                            1. Turn Key ON - Voltmeter reads ~ 13.2
                            2. Start Engine - Voltmeter immediately buries the needle to the right.

                            As an aside, I check the voltage on a plug at the mast with the engine running a week or so ago, and it was 14.4V so I don't think the system is over charging.

                            thanks

                            jon

                            Comment


                            • #15
                              Sign up today
                              One strike, Jon. LOL

                              Turning the key on is reading battery voltage and after starting, the charging voltage is being read.

                              I would check the water/electrolyte in the battery and the clean the battery post and connectors. If the alternator has an internal regulator, it may be bad. You could remove the alternator and take it to an auto parts store for testing.

                              If your manual doesn't have the same information, I found this online from Westerbeke and alternator test/troubleshooting starts on page 25 with schematics a few pages later. https://www.westerbeke.com/operator%...%20rev%205.pdf
                              BOAT SPECS FORUM HELP STARCRAFT FORUM SHOP iboats
                              Please, no PM's (Private Messages) regarding boat/engine problems.
                              That is what the forums are for.
                              Only forum/moderator issues will be answered in PM's.

                              Comment

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