Black and gray water dump valves 03 Marquis

[William Harrison]

 After getting an odorous bath at the dump station I realize that my black water valve is either not working
or (like on my last coach) deteriorated.  Are the valves rebuildable and where do you get the parts?

[Jerry Carr]

A great job for the labor dy weekend! you can get parts at most camper supply stores like camping world

[Tim Bentley Co-Admin]

If your 03 Marquis is like mine you have Drainmaster electric valves.  They do not last forever and can not be rebuilt.  You can get replacements from drainmaster, they used to give a discount for replacemtnts.  I have replaced mine and it is not an easy job because you need to work behind the water manifold panel which can be difficult to remove.  I was able to get mime open enought to work behind it.

You can make your valves last longer and work better if you lubricate them.  I use silicon spray.  Empy the tank and place a small amount of water in it, spray a large quantity of silicon spray in the toilet and flush it down.  Go outside and work the valve several times.  This method will free up all types of holding tank valves.

You can get replacements ar

http://www.drainmaster.com/

[William Harrison]

 Just checked the valve on the black water tank and the motor runs but the gate valve doesn't move
Valves are only available from Drainmaster.

[Tim Bentley Co-Admin]

When you install the new valves, make sure that motors are up, this will keep them dry and they will last longer.  Check to see that the valves are mounted, so they do not twist or torque out of alinement as you tighten the bolts.  If they do not line up properly they will bind and not operate smoothly.  You may need to change the electrical connectors on the valves, as the new ones will not match.