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    4788 sanitation hose replacement ???-gctid361865

    Hello All,

    Its been a whyle and it is nice to see the new members and the somewhat old, not so old ones too ! ! !

    Lots of great info and Thanks, I better go and anti up my contributions.......they are due.

    I am seeking knowledge from anyone who has changed their sanitation hoses on their 4788.

    I have a 2001 4788 equiped with vaccu flush heads and the original sanitation hoses.

    I would like some , "been there - done that ", advice and any words of wisdom picked up along the way, would be appriciated.

    I cannot enter the area from where the central vac is normally located.

    I have a 3kw inverter there with all the heavy wiring going to my house bank located where most have their aft water tank.

    From my internet readings I believe two marine sanitation hoses are being recomended as the best for the job;

    A-) Trident 101, which would cost about $460.00 plus shipping for 50 ' ( recomended by Peggy HAll in an article though not specifically for vaccuflush)

    B-) Odorsafe Plus which would cost about $350.00 plus shipping for 50'. ( recomended from Dometic/ Sealand as being the best they have)

    The cost diference in the material is small compared to the labor required to redoo them earlier , so I want to go with the best.

    I am thinking of taking apart the small shelves under the aft head sink and acess the joint where the two head hoses join. This would also help me in feeding the hose from aft of the fuel tank forward and through the bulk head and join it to a new y joint as well. I am planning to use the old hose to fish the new one forward ...pulling it from aft behind the fuel tank, and the engine room?

    Your advice would be appriciated

    Thank You for your time,

    Very Best Regards to All,

    Pete

    #2
    I just got through changing all the hoses in my Hatteras with Trident 101. It's considered the best by most I've talked to. The hoses in my boat were 35years old trident 101 and really still in good shape. I totally changed my waste system requiring the change. A trick needed to handle this hose is the use of a heat gun to make the hose flexible and to push the hose on to hose barbs. Are your hoses permeated at this point?

    Comment


      #3
      When you remove or better cut old hose from barb have your wet or dry vac running to suck up any residue in the hose, then have a piece of plastic and large heavy duty rubber bands to seal the ends.
      Started boating 1965
      Bayliners owned: 26 Victoria, 28 Bounty, 32, 38, and 47 since 1996

      Comment


        #4
        Is 50' the right amount of hose needed to replace all the waste hoses for a 4788?
        Pat
        Paragon
        1999 4788

        Comment


          #5
          Here's what it looks like behind the aft head sink. The cabinet comes out relatively easy, just remove all the screws.You will need a small frame strong person to work in there.You can see the bulges in the hoses on mine.I did this many years ago and went to 1" hose and no Y valves. Not sure it that will work with the vacuflush. It works great with the electric heads.

          [img]/media/kunena/attachments/vb/665057=25534-AFT VANITY CABINET REMOVED, BULDGING WASTE HOSE'S.jpg[/img]

          Comment


            #6
            Hi

            My two penneth worth is if you are going to do it ,do it all, every peice of black hose has to go! I did mine 96 4788 and left the salt water in my case water inlet hoses and they even stank!

            Had to turn to and replace them later which required redissmantling of the aft head cupboard again! Very difficult to get into the siphon break there not fun.

            Otherwise the hoses all pull through ok .

            Good luck.
            Horizon 68
            Sydney

            Comment


              #7
              I installed a vacuflush system in our 4588 and used all hardline 1 1/2" plastic pipe with the only hose above the tank level going to the pump-out fitting.

              Comment


                #8
                Randyzon wrote:
                I installed a vacuflush system in our 4588 and used all hardline 1 1/2" plastic pipe with the only hose above the tank level going to the pump-out fitting.
                ALWAYS use as much solid pvc pipe as possible! That was stressed in the vacu flush training class!

                Comment


                  #9
                  Thanks to all, Comments below;

                  Scary, I figured a heat gun would help, thanks for the confirmation, Trident 101 it will be unless convinced otherwise,Yes they are permeated and have been for some time. Removed the s#it tank two seasons ago, had the threaded flanges removed and placed a 1" thick piece rewelded to repair crossthreading from original install. Then on the hottest and humid days I would still smell the smell you don't want in my lower cabinets from both heads....up close and near you can smell it as if there was a leak.

                  Thank you for your info.Mmichellich, good idea with the rubberbands,I have a dedicated hose for my shopvac that allows the shopvac to sit on the swimstep and go into the forward section of the engine compartment....used in the s#it tank project and just cant get it to be acceptable for anything else other than s#it projects...it will be standing by.Thank You

                  Pat, I am not sure as I am traveling and will get back to my boat next Monday.Just used the 50' as a price reference to show it is not that great a difference when looking at the whole project.If you need to know I will post info late this spring once it is done.

                  Comment


                    #10
                    Thanks to all, Comments below;Scary, I figured a heat gun would help, thanks for the confirmation, Trident 101 it will be unless convinced otherwise. Yes they are permeated and have been for some time. Removed the s#it tank two seasons ago, had the threaded flanges removed and placed a 1" thick piece rewelded to repair crossthreading from original install. Then on the hottest and humid days I would still smell the smell you don't want in my lower cabinets from both heads....up close and near you can smell it as if there was a leak. Thank you for your info.Mmichellich, good idea with the rubberbands,I have a dedicated hose for my shopvac that allows the shopvac to sit on the swimstep and go into the forward section of the engine compartment....used in the s#it tank project and just cant get it to be acceptable for anything else other than s#it projects...it will be standing by.Thank YouPat, I am not sure as I am traveling and will get back to my boat next Monday.Just used the 50' as a price reference to show it is not that great a difference when looking at the whole project.If you need to know I will post info late this spring once it is done.Pacrimrat, thanks for the photo and the confirmation, I was hoping it would be that easy to remove......Got just the guy to fit in there...future son in law...thanks for that heads up...Vacuflush needs the larger hose. Thanks and thanks for so many years ago telling me I could single hand a 4788....it was you was it not? I went 4 years pretty much alone, Just me n Capt Morgan..looking...looking....only rivers and lakes...always at marinas...looking for 2 legged deer,...last 2 years have been better,....got my deer.Very best Regards to you ,Your post way back then gave me the confidence I needed...that and I put on a bow and stern thruster as soon as* I bought the boatAndrewf, Good advice,when there do it all, boat is 10yrs old +, Nice to see a confirmation they will fish themselves through, I hope mine will too.Thank you.Randyzon and Boatommy, I hear your comments about solid pipe and respect it. Yet after living abord for 6 years each spring, summer and fall, always using regular nice soft toilet paper, always using the heads and not going to marina toilet facilities as many do, and having "almost" no problems I will replace what was there before.If it would be easy to run solid lines I might consider it, but my sanitation hoses twist and turn from one head to the next and then join rise up and go aft through 2 bulkheads and then drop down again to go into the bottom of my s#it tank .There would be so many joints ,I prefer to replace what worked well in function to date. Thank you as well for your recomendations.Very Best Regards to all,Pete

                    Comment


                      #11
                      con't from above,

                      Pacrimrat, thanks for the photo and the confirmation, I was hoping it would be that easy to remove......Got just the guy to fit in there...future son in law...thanks for that heads up...Vacuflush needs the larger hose. Thanks and thanks for so many years ago telling me I could single hand a 4788....it was you was it not? I went 4 years pretty much alone, Just me n Capt Morgan..looking...looking....only rivers and lakes...always at marinas...looking for 2 legged deer,...last 2 years have been better,....got my deer.Very best Regards to you ,Your post way back then gave me the confidence I needed...that and I put on a bow and stern thruster as soon as* I bought the boat

                      Andrewf, Good advice,when there do it all, boat is 10yrs old +, Nice to see a confirmation they will fish themselves through, I hope mine will too.Thank you.

                      Randyzon and Boatommy, I hear your comments about solid pipe and respect it. Yet after living abord for 6 years each spring, summer and fall, always using regular nice soft toilet paper, always using the heads and not going to marina toilet facilities as many do, and having "almost" no problems I will replace what was there before.If it would be easy to run solid lines I might consider it, but my sanitation hoses twist and turn from one head to the next and then join rise up and go aft through 2 bulkheads and then drop down again to go into the bottom of my s#it tank .There would be so many joints ,I prefer to replace what worked well in function to date. Thank you as well for your recomendations.

                      Very Best Regards to all,

                      Comment


                        #12
                        I certainly understand the problem with hard pipe! I'm a certified vacu flush installer and know the problems. The good news is, the reason your old pipe lasted as long as it did is because the vacu flush system keeps the hoses virtually empty, unlike the "pusher" toilets.

                        You will enjoy many years of odor free living with either of the hoses mentioned!

                        fair winds,

                        thom

                        Comment


                          #13
                          Pete,

                          Yes, I'd be interested in knowing how many feet you use.

                          I'm looking at doing this job either this year or next.

                          I was hoping that someone who's already done this job would know how many feet of hose were used.

                          Maybe someone can still chime in?
                          Pat
                          Paragon
                          1999 4788

                          Comment


                            #14
                            I dislike dealing with sewer systems so a winter a couple years ago when the local yard was not busy, I offered them the chance to keep someone busy for a few days and got a good labor deal on replacing all my hoses in the sewer system. To get a good idea on length of hoses needed I used the parts list from Bayliner for a 47 which had all the lengths of hoses identified. I think that document is in the data base. I also used the photos and drawings of the hoses installed in the owners manual and parts list to help the installers determine how to best attack the problem. While doing the replacement of hoses they also replaced the maserator pump with an excellent diaphragm pump.
                            Started boating 1965
                            Bayliners owned: 26 Victoria, 28 Bounty, 32, 38, and 47 since 1996

                            Comment


                              #15
                              Great idea MMichellich.

                              The database has a 4788 parts catalog from 1995. The diagram doesn't show the vacuflush included, so it may not be totally accurate for later models.

                              I did go to www.baylinerparts.com which has all part catalogs from 1996 and newer.

                              For 1999 models, it looks like 75 feet is required.

                              For 1995 models (without vacuflush) it looks to be 72 ft, but is a combination of 1 1/2" dia and 1" dia
                              Pat
                              Paragon
                              1999 4788

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