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53_willys's avatar
53_willys
Explorer
Apr 17, 2017

2017 Keystone Cougar 336BHS plumbing problems

My son in law and daughter just bought a new Cougar 5th wheel with the out side Kitchen . The problem is the sink in the out side kitchen does not drain to a gray tank as best as we can figure it it plumbed straight to the dump hookup on the drivers side of the trailer. The sink backs up after washing your hands two or 3 times , but it does not register on the tank level panel. My son in law put a five gallon bucket under the dump and drained the water out the sink emptyed and he only wound up with 3 1/2" of water in a five gallon bucket. We've never heard of a sink not plumbed to a gray tank . WTF have any of you experienced this problem and if so what was the remedy?

8 Replies

  • Lantley's avatar
    Lantley
    Nomad
    Apr 17, 2017
    53 willys wrote:
    Well guys live and learn Keystone with this model trailer doesn't plumb it to a gray water tank , the dealer told my son in law to use a bucket or small portable gray water tank to drain into. It's only plumbed across to the other side of the trailer to a dump connection. Can you believe that ? I don't know if you all think this way but when I buy a RV I assume that the sink would drain into a holding tank. My son in law is a little upset with Keystone as he should be .


    Most outside sinks are not plumbed into the tank. Typically there is not adequate fall/access to properly plumb into grey tank.
    As you are learning do not assume they are plumbed into a grey tank.
    My observation has been most are not connected to the grey tank
  • 53_willys's avatar
    53_willys
    Explorer
    Apr 17, 2017
    Well guys live and learn Keystone with this model trailer doesn't plumb it to a gray water tank , the dealer told my son in law to use a bucket or small portable gray water tank to drain into. It's only plumbed across to the other side of the trailer to a dump connection. Can you believe that ? I don't know if you all think this way but when I buy a RV I assume that the sink would drain into a holding tank. My son in law is a little upset with Keystone as he should be .
  • NWKomfort350's avatar
    NWKomfort350
    Explorer
    Apr 17, 2017
    I have had 2 outside kitchens and neither drained to a tank.
    They both have had spots to hook up a hose directly under sink.
    Where the other end of the hose goes is up to the user.
    I very rarely have ever used the outside sink.
  • 53_willys's avatar
    53_willys
    Explorer
    Apr 17, 2017
    Campinfan wrote:
    On my Cougar 330RBK, the handle to open/close the gray tank for the sinks (indoor and outdoor) are behind the axle, sort of hard to see. Maybe the handle is open. If it is not that, take it to the dealer and see what is wrong. Keep us posted...it helps all of us learn for situations down the road. If it happens to you, it is bound to happen to someone else too.


    Thank you we will check
  • Campinfan's avatar
    Campinfan
    Explorer III
    Apr 17, 2017
    On my Cougar 330RBK, the handle to open/close the gray tank for the sinks (indoor and outdoor) are behind the axle, sort of hard to see. Maybe the handle is open. If it is not that, take it to the dealer and see what is wrong. Keep us posted...it helps all of us learn for situations down the road. If it happens to you, it is bound to happen to someone else too.
  • evanrem's avatar
    evanrem
    Explorer II
    Apr 17, 2017
    My outdoor kitchen has its own grey tank also. Minus trips of long boon docking I would rather have it drain into the black tank as it never gets very full.
  • alexleblanc's avatar
    alexleblanc
    Explorer
    Apr 17, 2017
    Just a though but my last TT with an outdoor kitchen shared a separate gray water tank with the island kitchen sink. It may just be full.

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