Coach Fresh Water Pump

mcrule

Active member
Nov 21, 2021
260
37
28
82
Elk City, OK 73644
For those of interest, I have a 1977 Kingsley with a full bed in the back. The tank and pump are under the bed. The mattress is next to impossible to remove, especially by yourself. I wanted to set up for quick winterizing using coach pump for pink fluid. I purchased a Camco Permanent Pump Converter Winterizing Kit- Allows You to Use Boat/RV Water Pump to Fill Pipes With Antifreeze - Lead Free, CSA Low Lead Content Certified (36543) from Amazon $14. I located a place in the outside propane area to attach the new valve. I connected 1/2" plastic hose to tank outlet to one side of valve and another from other side of valve to pump. Since the drain is also under the bed, I put a 1/2" barbed tee that had a 1/2" MPT where I can cap it off until I need to drain. That is also in the propane area. There you have it. Obviously, you can use whatever sizes work for you. If you do very cold wx camping, you would need to wrap that in insulation.

UPDATE! The above was written as if I had done the bypass, actually it was THE PLAN. Now for the 'Rest of the Story'. I decided to use Pex and Sharkbite connections. I have included pictures that explain things pretty well. The part that really worked out was the Pex washing machine connection attached to the water hose elbow for putting in the pink anti-freeze.
 

Attachments

  • IMG_3517.webp
    IMG_3517.webp
    1.4 MB · Views: 20
  • IMG_3518.webp
    IMG_3518.webp
    1.3 MB · Views: 20
  • IMG_3519.webp
    IMG_3519.webp
    853.2 KB · Views: 20
  • IMG_3520.webp
    IMG_3520.webp
    919.8 KB · Views: 20
  • IMG_3522.webp
    IMG_3522.webp
    355.2 KB · Views: 19
  • IMG_3523.webp
    IMG_3523.webp
    653.1 KB · Views: 18
  • IRUW2665.webp
    IRUW2665.webp
    1 MB · Views: 20
  • IMG_3526.webp
    IMG_3526.webp
    933.7 KB · Views: 20
Last edited:
  • Like
Reactions: tmsnyder
I’m deep into this, great pictures. So helpful.
Is this little 1/8” line the antifreeze injection?

If so, I want to abandon that, for a simple drain, just drain it all if it’s going to be stored in freezing? I don’t live where it gets freezing cold anyway, and I’d probably leave a little space heater in her in the winter.

I’m trying to replumbing it entirely, get rid of the black stuff, replace it all with the PEX upgrade. Any hints on how to get to the back of the City Water Connection??? Behind the closet bottom, back, I think ???
 

Attachments

  • IMG_8482.webp
    IMG_8482.webp
    1.7 MB · Views: 5
I’m deep into this, great pictures. So helpful.
Is this little 1/8” line the antifreeze injection?

If so, I want to abandon that, for a simple drain, just drain it all if it’s going to be stored in freezing? I don’t live where it gets freezing cold anyway, and I’d probably leave a little space heater in her in the winter.

I’m trying to replumbing it entirely, get rid of the black stuff, replace it all with the PEX upgrade. Any hints on how to get to the back of the City Water Connection??? Behind the closet bottom, back, I think ???
That little nylon tube is a drain for the pressurized hose on the left (driver's) side of the tank. There should be a drain cock on the larger hose that opens to the small tube. The valve in the center is the main drain valve for the fresh water tank.
 
  • Like
Reactions: TwistyTony
That little nylon tube is a drain for the pressurized hose on the left (driver's) side of the tank. There should be a drain cock on the larger hose that opens to the small tube. The valve in the center is the main drain valve for the fresh water tank.
Thank you. So, I’ll just be redoing this with a full size drain.
There’s one of these on the kitchen side too…same purpose I suppose for winterizing? (Which didn’t get done last winter, thus the full on re-plumb now).