Unit won't flush, suspect a clog or duck bill valves...no blown fuses. I have a vacuum holding tank (VHT) unit in the engine compartment that has what looks like a pump on top of it. However from what I've read there's supposed to be a vacuum pressure tank and associated tank between it and the toilet. I've looked as far as I can under the deck sink forward towards the head area and I can't see anything but the waste hose. Does anyone know where the vacuum unit is located? OR is that VHT an "all-in-one" type of unit?
What I've read tells me to look for three components - toilet, vacuum tank/pump and the holding tank. The VHT has the hose connection leading to the dock pumpout outlet on the gunwale, and the waste hose inlet. It's definitely THE waste holding tank.
I can't find a layout of these boat components online. I've removed the TP holder in the head and can only see the head sink outlet thru the hull. No sign of a vacuum pump/tank back there. Would it be UNDER the toilet??? along with a bellows assembly perhaps?
Help! I know I have an ugly job ahead of me, but I cant even get started until I can find all the components!
I could post a pic of the VHT if that would help. It's a VHT12. Even the manual shows a separate vacuum tank/pump assembly as well as a filter unit (for air I believe) - but I cant find these anywhere. Toilet is a model 508+ (Sealand/Dometic),
What I've read tells me to look for three components - toilet, vacuum tank/pump and the holding tank. The VHT has the hose connection leading to the dock pumpout outlet on the gunwale, and the waste hose inlet. It's definitely THE waste holding tank.
I can't find a layout of these boat components online. I've removed the TP holder in the head and can only see the head sink outlet thru the hull. No sign of a vacuum pump/tank back there. Would it be UNDER the toilet??? along with a bellows assembly perhaps?
Help! I know I have an ugly job ahead of me, but I cant even get started until I can find all the components!
I could post a pic of the VHT if that would help. It's a VHT12. Even the manual shows a separate vacuum tank/pump assembly as well as a filter unit (for air I believe) - but I cant find these anywhere. Toilet is a model 508+ (Sealand/Dometic),