We have a 2010 Sundance 3300SK and noticed toward the end of the camping season last fall, that the gray tanks were not fully emptying at the dump stations. We had inadvertantly left a gray tank valve open during the drive home and experienced a large amount of water being dumped from the unit during the drive. It concerned me that we were not fully dumping the gray tanks. Today I tried to test the drainage system by putting 3 gallons of water in each gray tank (3 in shower and 3 in kitchen). I then opened each valve seperately to see how much water I would get to drain out. With the camper level, zero water came out of either gray tank. I then added another 3 gallons of water to the kitchen tank and tried again. Out of the 6 gallons now in the kitchen tank, only about 2 gallons slowly drained out. I then raised the nose of the fifth wheel to maximum extension, and got about another 2 gallons slowly draining out of the kitchen tank. At this point the shower gray tank started to barely dribble out. I was not able to drain the 3 gallons I put in that tank. I would like to know if this is a design issue in the Sundance that might be warranted so that I can go back to my dealer to try to get this rectified.
Thanks for your assistance.
Randy Truitt
Thanks for your assistance.
Randy Truitt
