miaaron Report post Posted July 16, 2018 This is our 8th or 9th RV and I've always been able to service most things but for the life of me I can't find the black tank flush nozzle on the tank. I've have good pressure through the backflow valve but nothing into the tank so I assume it's plugged. I've dropped a camera / scope into the tank and can see that's it's not been well cared for. There is enough stuff that I can't locate the flush nozzle from the inside either. I can trace all of the lines until they dissapear through a bulkhead for wards the driver side / front of the tank. Does anyone know of a hidden access to get to the nozzle? Thanks, Michael Share this post Link to post Share on other sites
rossboyer Report post Posted July 16, 2018 Are you sure that there is a back flush on your tank? Our first one was on a 2006 coach. Share this post Link to post Share on other sites
hermanmullins Report post Posted July 17, 2018 Michael, Welcome to the Forum. As Ross asked, are you sure you have a Tank Flush? If you do there should be a hook up or connection to connect a hose to. Herman Share this post Link to post Share on other sites
manholt Report post Posted July 17, 2018 Every "Back Flush" I have had, has a separate hose connection!! Share this post Link to post Share on other sites
rsbilledwards Report post Posted July 17, 2018 Yes it should have one, my 1999 Panther has one. But beings it is a Monaco the assembly of the panels in the cargo area could be different than the SMC years. Look carefully inside at the panels behind it. SMC used drywall screws through the carpet to tie them together. The tie method could also be Velcro. In any event it is not rocket science. Share this post Link to post Share on other sites
miaaron Report post Posted July 18, 2018 Positive it has one. Clearly marked "Black Tank Flush". I can follow the line to under the bathroom sink, I have tested the backflow preventer and followed the line under the shower and back behind the wet bay. The line goes forward towards the black tank which sits between the rear wheels / above the fuel tank. The inside of the tank is "cruddy" with years of neglect. Since I can't see the flush nozzle with a camera inside the tank I get the unenviable task of pressure washing inside the tank and hope I hit the flush nozzle enough to clean it - wherever it is. I may opt to cap it off and add a new nozzle. Even though it will be on the wrong end of the tank to push anything out, it will help clean the surfaces. Thanks, Michael Share this post Link to post Share on other sites
wildebill308 Report post Posted July 19, 2018 Welcome to the forum. 4 hours ago, miaaron said: Since I can't see the flush nozzle with a camera inside the tank I get the unenviable task of pressure washing inside the tank and hope I hit the flush nozzle enough to clean it - wherever it is. There are people who offer that service (pressure washing inside the tank) They were at a rally I was at last year, so that is an option if you can locate someone in your area. I would try a easeyer method of using one of the commercial tank cleaning/dissolving chemicals and add some Calgon water softener fill it full of water and let it set for a few days. You may need to do this a couple of times depending on condition. Bill Share this post Link to post Share on other sites
manholt Report post Posted July 19, 2018 You can also add a 1/4 cup of Dawn and take a 50 mile drive, then do as Bill said. He's not right on everything, just most. Share this post Link to post Share on other sites
wayne77590 Report post Posted July 20, 2018 Carl, time for your annual checkup a the doctor's office. Share this post Link to post Share on other sites
manholt Report post Posted July 20, 2018 Physically, coming up in August. Mentally, past due! I'm sane, everyone else is Share this post Link to post Share on other sites
