Best Of

thanks for info everybody.  I did try pushing in the John Guest fitting (thanks for the name) but it came loose again.  Next step is to try to take it apart from the brass fitting and putting it back together again.  Check inside brass as well.  My issue is a leak at that spot not a mixing problem (although now I know where that is) Fingers crossed that will work!  Try to get around to it in the next few days.  Will let you all know.

The mixing valve is actually rather easy to remove @ventureboy. There are a few screws to disconnect the brackets from the bulkhead. The plumbing connectors are John Guest push fit. Here's a link to a video on how to connect/disconnect them. John Guest Push Fit Fittings; How To Connect And Remove . It took me just a few minutes to get the mixing valve out (there is no trophy if you're faster though).
Good luck with the repair!

OK, so the wife and I worked up a checklist for de-winterizing our T@B 400 this year (second year of ownership,) and I'm just curious what others with more experience with a camper think.
What might we be missing, what's doing more work than we need to, that sort of thing.

Quite a bit of this can be done in parallel if you've got two or more people (I suppose if we'd had kids, we could shanghai them into helping.)  Some of the steps were cribbed from winterizing / de-winterizing documents previously posted here (for example, the de-winterize and sanitize a 320 w/Nautilus doc) and some are me just thinking "what might go wrong / be broken / gremlins chewed on over the winter" and making a list to check those things.

I've got this in a Word doc at home and did my best to carry over the indenting.

• Verify all drain valves closed
• *  Under bed hot water tank yellow valve
  
• *  Outside water drains
  
• Flush RV antifreeze
  
• *  Set Nautilus to “City Water”
  
• *  Connect flow restrictor to hose bib
  
• *  Connect hose to flow restrictor and Nautilus
  
• *  Turn on water at hose bib
  
• *  Open each faucet one at a time
• *  *  Cold, then hot
• *  *  Wait for water to flow clear
• *  Flush toilet until water flows clear
• *  Drain black tank into Rhino tank
• *  *  Dump tank into house toilet
  
• *  Drain grey tank into Rhino tank
  
• *  *  Dump tank into house toilet
  
• Sanitize water system
  
• *  Set Nautilus to “Sanitize”
• *  Mix 1/3 cup bleach in 1gal bucket with water
• *  Utilize pump to suck in mix
• *  Connect hose to flow restrictor and hose bib
• *  Set Nautilus to “Powerfill”
• *  Fill tank
• *  Turn on water pump
• *  Run each faucet, hot and cold, until bleach is smelled
• *  Let tank and lines sit for several hours to sanitize
  
• Clean inside of camper
  
• *  Wipe down all surfaces with damp cloth
  
• *  Wipe down all surfaces with bleach wipes
• *  Wipe down inside of refrigerator with damp cloth
• *  Wipe down inside of refrigerator with bleach wipe
• *  Sweep floor
• Clean all dishware / cookware
• *  Take in house and put in dishwasher
• *  Blue tape all dishware cookware to check use
• Check propane system
• *  Check estimated propane level w/TankCheck app
• *  Open propane tank valve
• *  Turn on both stove burners
• *  Turn off stove
• *  Close propane tank valve
• Check electric system
• *  Connect to shore power
• *  Plug outlet tester into all outlest
• *  Turn on TV
• *  Turn on all lights
• Clean / check outside of camper
• *  Open all windows
• *  Wipe down all window seals with damp cloth
• *  Wipe down camper surface around windows with damp cloth
• *  Check all roof fittings / caulk for cracking / peeling
• *  Close windows
• *  Wash outside of camper
• Flush sanitizing water
• *  Set Nautilus to “Sanitize”
• *  Open low point drains, let system drain out
• *  Refill fresh tank, then drain, repeat until no bleach smell
• *  Set Nautilus to “City Water”
• *  Open faucets and run water until no bleach smell
• *  If returning camper to storage, drain all tanks
• *  If taking camping, fill fresh tank
• System checks
• *  Refrigerator temperature check
• *  All flashlights work
• *  Spare batteries
• *  Phone charge cords
• *  Check Alde glycol level (tank in toilet side, front storage cubby
• *  Check tire pressures, including spare
• *  All vent fans work