| [GMCnet] Need advice on rear rebuild/water system [message #221298] |
Fri, 06 September 2013 06:46  |
Peter Garry
Messages: 138
Registered: July 2011
Karma: 0
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Senior Member |
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I too found the rear floor sopping wet after our first overnight in the coach.
The fresh water tank had a crack where the sender was located. In that the PO had made a bed out of the rear sitting area and the Onan battery had been spilling it's acid for a long time and eroded the floor in that area. I removed ALL the rear stuff. (including the Onan) The hot water tank under the bath vanity was toast as well. So....a new fresh water tank, a new hot water tank and a whole bunch of plumbing stuff.
Here's what I did to the plumbing.
Turned the new water tank 90 degrees and moved to within about 14" from the rear wall, put a new filler from rear of the coach and put in a new water pump and accumulator.
Put the new hot water tank on the floor immediately behind the wet bath toilet, insulated it and extended the engine hot water lines.
Plumbed in 2 manifolds, one for hot water one for cold.
Ran a single water line from each manifold outlet to each fixture (no joins)
The cold water manifold has separate outlets for: hot water tank, kitchen, vanity, shower and toilet (5)
The hot water manifold has separate outlets for: kitchen, vanity and shower (3)
Moved the waste lines to hard against the exterior wall of the coach.
Installed a diverter to direct the grey waste from the vanity and kitchen directly to the outside (into a bucket for boon-docking)
The space under the vanity is now a large cupboard with the original sliders.
The water line layout hereto described is "home run plumbing" each line is separate and there are no hidden tees or joins.
Peter Garry
Calgary Alberta
'73 - 23' (once a painted desert)
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| Re: [GMCnet] Need advice on rear rebuild/water system [message #221304 is a reply to message #221298] |
Fri, 06 September 2013 07:34  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Peter Garry wrote on Fri, 06 September 2013 07:46 |
I too found the rear floor sopping wet after our first overnight in the coach.
The fresh water tank had a crack where the sender was located. In that the PO had made a bed out of the rear sitting area and the Onan battery had been spilling it's acid for a long time and eroded the floor in that area. I removed ALL the rear stuff. (including the Onan) The hot water tank under the bath vanity was toast as well. So....a new fresh water tank, a new hot water tank and a whole bunch of plumbing stuff.
Here's what I did to the plumbing.
Turned the new water tank 90 degrees and moved to within about 14" from the rear wall, put a new filler from rear of the coach and put in a new water pump and accumulator.
Put the new hot water tank on the floor immediately behind the wet bath toilet, insulated it and extended the engine hot water lines.
Plumbed in 2 manifolds, one for hot water one for cold.
Ran a single water line from each manifold outlet to each fixture (no joins)
The cold water manifold has separate outlets for: hot water tank, kitchen, vanity, shower and toilet (5)
The hot water manifold has separate outlets for: kitchen, vanity and shower (3)
Moved the waste lines to hard against the exterior wall of the coach.
Installed a diverter to direct the grey waste from the vanity and kitchen directly to the outside (into a bucket for boon-docking)
The space under the vanity is now a large cupboard with the original sliders.
The water line layout hereto described is "home run plumbing" each line is separate and there are no hidden tees or joins.
Peter Garry
Calgary Alberta
'73 - 23' (once a painted desert)
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Peter,
I like it, but you left a part that I now consider essential (since I added one). There is a check valve between the pump discharge and the house systems. If you install a valve to by pass that to the pump suction, it gives you two things.
One is a way to fill the potable tank when you are connected to city water.
The other is an easy way to wet the pump when restarting the system from dry. (How I winterize it.)
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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