Water Tank Drainage

[popeyedoyle1]

Does anyone know if a 1978 Ambassador 28' has a water tank drain plug and the location?..I have been draining water at HW drain plug but there has to be a faster way...thanks

[scf31]

I have a 77 25 footer ,the fresh water tank drain is under the Airstream about 2 foot in front of the axle,there is a square plate,its there,mine has a drain valve,like a water spicket,

[wahoonc]

Originally Posted by popeyedoyle1

Does anyone know if a 1978 Ambassador 28' has a water tank drain plug and the location?..I have been draining water at HW drain plug but there has to be a faster way...thanks

There are also a couple of valves in the back that need to be opened, and at least 2 more under the sink. Maybe someone has access to a manual and can post the full sequence. Do you have an owner's manual? If not you can buy reprints from Airstream these are a nice quality reprint of the orginal owners and service manuals. Well worth the money on the 70's vintage units.

Aaron

[popeyedoyle1]

Thankyou for replies gentlemen....I do have two valves in rear hatch where release valves are located and when I open them I seem to get some drainage...I will check later to see if I have anthing in front of axle...nothing under kitchen sink!!! More Later!!!

[wahoonc]

Popeyedoyle,
I don't know if you have a rear bath or center bath...I have attached 2 scans, one for the water systems and one with the winterizing procedures which includes how to drain the entire system. These are from the 1975 and 1976 Owners and Service Manual, so they may not be totally correct for a 1978. You can buy reprints of the manuals from the Airstream Store (bottom of the page) well worth the investment IMHO

Aaron

[ticki2]

Mine did not originally have a drain valve either. Owners manual said to use the pump to drain it. To me it seemed to be a bad idea to use the pump to empty a 50 gal tank.If you take off the 8x8 steel plate under the trailer you should find a 3/8 or 1/2 inch rubber hose . This is the feed from tank to pump. If there is no valve there , cut the rubber hose and put a drain valve in with hose clamps , end of problem. Good luck

[Coastalview]

Originally Posted by popeyedoyle1

Does anyone know if a 1978 Ambassador 28' has a water tank drain plug and the location?..I have been draining water at HW drain plug but there has to be a faster way...thanks

If you have a rear bath model like ours, theres a drain plug on the streetside between the axles. Should be plastic, 3/4" head insert to remove, and is within the inside of the water tank belly pan. Jeff

[Action]

Originally Posted by ticki2

To me it seemed to be a bad idea to use the pump to empty a 50 gal tank.

You have a 50 gal tank! I am impressed!

>>>>>>>>>>>>>>>>>Action

[ticki2]

Originally Posted by Action

You have a 50 gal tank! I am impressed!

>>>>>>>>>>>>>>>>>Action

It impressed me also . According to the '76 owners manual all int'l and LY have 50 gal water tank