Grey tank problems on our 303

[John612]

Discovered today that any water dumped into the kitchen sink goes straight out the sewer hose, none of the three valves have any effect. Puzzled as to why I didn't discover this before while washing dishes, etc.
Only been out 5 times so far and just didn't realize it was happening while hooked up to the hole in the ground as we were through washing dishes by the time I unhooked the sewer hose.
Always been suspect of the left gray valve, had a short, easy pull compared to the other gray and black tank valves.
My middle gray valve works fine and is connected to the bathroom sink and shower.
Installed extra gate valve several trips ago because we have the sme problem others have about leakage t the cap.
Taking it into shop tomorrow.

[Dave and Monica]

It sounds like the cable end is disconnected at the galley grey tank valve. Suggest you call GD Customer Service at 574-825-9679 to discuss your options.

Dave

[John612]

Thanks Dave, just talked to Jerry at GD and he agrees, set screw on valve has probably come loose.
John