Thetford valves- low air light

E

emerystora

New member
Apr 6, 1999
14,608
2
1
While at a local RV store buying a part I talked with the owner about
Thetford holding tank drain valves. He tells me that they can still
be purchased. Thetford made two types of valves. One has plastic on
both sides and the other one has a stainless steel plate. The latter
one is what was used on the GMC. He can order a new Thetford valve
for a cost of $64.68 plus tax and an incoming shipping charge (about
$5 or 6 shipping). He can also order a kit to rebuild the Thetford
valve for $52.79 plus tax and shipping. The kit has a stainless
steel plate with gasket attached and the outside gasket.

The place that had the Townsend valves for $25 still has about 5
left. I have found that this valve can be used in place of the
Thetford valve if you cut off the plastic end of the handle and drill
a small hole for the GMC tube that attached to the valve to pull it
open from the side frame. You can also dissamble this valve and the
Thetford valve and use the stainless steel plate to rebuild your
Thetford valve. If anyone wants one of these let me know.

I was also at the junk yard today and found another 12 of the little
clips that go into the rear of the dash telltale light where the
wires lead to the circuit board. There is an empty space that leads
to the "low air" light. This clip can be slid into that space and
the bulb is already there so that you can run a wire from your air
compressor to the light to show when your compressor is running while
you are driving.

I sent out about 18 of these clips eariler this year at no charge.
If anyone needs one let me know. I also have a few of the bulbs and
little black plastic bulb holders that fit the tiny socket for the
telltale lights.

Emery Stora
77 Kingsley
Santa Fe, NM
 
I would like the light parts.

gene

>While at a local RV store buying a part I talked with the owner about
>Thetford holding tank drain valves. He tells me that they can still be
>purchased. Thetford made two types of valves. One has plastic on both
>sides and the other one has a stainless steel plate. The latter one is
>what was used on the GMC. He can order a new Thetford valve for a cost of
>$64.68 plus tax and an incoming shipping charge (about $5 or 6
>shipping). He can also order a kit to rebuild the Thetford valve for
>$52.79 plus tax and shipping. The kit has a stainless steel plate with
>gasket attached and the outside gasket.
>
>The place that had the Townsend valves for $25 still has about 5 left. I
>have found that this valve can be used in place of the Thetford valve if
>you cut off the plastic end of the handle and drill a small hole for the
>GMC tube that attached to the valve to pull it open from the side
>frame. You can also dissamble this valve and the Thetford valve and use
>the stainless steel plate to rebuild your Thetford valve. If anyone wants
>one of these let me know.
>
>I was also at the junk yard today and found another 12 of the little clips
>that go into the rear of the dash telltale light where the wires lead to
>the circuit board. There is an empty space that leads to the "low air"
>light. This clip can be slid into that space and the bulb is already
>there so that you can run a wire from your air compressor to the light to
>show when your compressor is running while you are driving.
>
>I sent out about 18 of these clips eariler this year at no charge. If
>anyone needs one let me know. I also have a few of the bulbs and little
>black plastic bulb holders that fit the tiny socket for the telltale lights.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM

Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/ http://www.california.com/~eagle/
 
Emery,
On my '78 Elenganza II, the control panel on the wall that has the gauges
that indicate LP gas, Fresh water, sewer tank, there are no lamps to
illuminate the gauges. Don't know if there never was or if they have been
removed. Would be nice to have them so I could check them at night without
arousing the wife. Would what you have work? Thanks
Neely B. TN
- -----Original Message-----
From: Emery L. Stora
To: GMCNET
Date: Saturday, July 29, 2000 7:52 PM
Subject: GMC: Thetford valves- low air light

>While at a local RV store buying a part I talked with the owner about
>Thetford holding tank drain valves. He tells me that they can still
>be purchased. Thetford made two types of valves. One has plastic on
>both sides and the other one has a stainless steel plate. The latter
>one is what was used on the GMC. He can order a new Thetford valve
>for a cost of $64.68 plus tax and an incoming shipping charge (about
>$5 or 6 shipping). He can also order a kit to rebuild the Thetford
>valve for $52.79 plus tax and shipping. The kit has a stainless
>steel plate with gasket attached and the outside gasket.
>
>The place that had the Townsend valves for $25 still has about 5
>left. I have found that this valve can be used in place of the
>Thetford valve if you cut off the plastic end of the handle and drill
>a small hole for the GMC tube that attached to the valve to pull it
>open from the side frame. You can also dissamble this valve and the
>Thetford valve and use the stainless steel plate to rebuild your
>Thetford valve. If anyone wants one of these let me know.
>
>I was also at the junk yard today and found another 12 of the little
>clips that go into the rear of the dash telltale light where the
>wires lead to the circuit board. There is an empty space that leads
>to the "low air" light. This clip can be slid into that space and
>the bulb is already there so that you can run a wire from your air
>compressor to the light to show when your compressor is running while
>you are driving.
>
>I sent out about 18 of these clips eariler this year at no charge.
>If anyone needs one let me know. I also have a few of the bulbs and
>little black plastic bulb holders that fit the tiny socket for the
>telltale lights.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM
 
Having senior moment... don't remember if I got one or not...so, if
you don't remember either, save me one.
al
 
Having senior moment... don't remember if I got one or not...so, if
you don't remember either, save me one.
al
 
>Emery,
>On my '78 Elenganza II, the control panel on the wall that has the gauges
>that indicate LP gas, Fresh water, sewer tank, there are no lamps to
>illuminate the gauges. Don't know if there never was or if they have been
>removed. Would be nice to have them so I could check them at night without
>arousing the wife. Would what you have work? Thanks
>Neely B. TN

Neely - the stock gauge unit installed by GMC does have bulb sockets.
Did you pull the panel and look at the back to see if it has burnt
out bulbs or are the bulbs just taken out of the sockets?

The gauge panel has a switch to read the gauges. When put in one
position the gauges and the lights are on all the time. The other
direction of the switch is a momentary contact that shows the gauges
and the lights only when you hold down the switch.

Unless someone has pulled out the bulbs or changed the whole panel
with a non-stock panel you should be just able to replace the bulbs
and have light.

Emery Stora
77 Kingsley
Santa Fe, NM
 
Emery,
Thanks for your reply. Got an answer from Peter describing the sockets and
bulbs. As I told him, there are no sockets in the panel.
Neely, TN
- -----Original Message-----
From: Emery L. Stora
To: gmcmotorhome
Date: Sunday, July 30, 2000 9:04 AM
Subject: Re: GMC: Thetford valves- low air light

>>Emery,
>>On my '78 Elenganza II, the control panel on the wall that has the gauges
>>that indicate LP gas, Fresh water, sewer tank, there are no lamps to
>>illuminate the gauges. Don't know if there never was or if they have been
>>removed. Would be nice to have them so I could check them at night
without
>>arousing the wife. Would what you have work? Thanks
>>Neely B. TN
>
>Neely - the stock gauge unit installed by GMC does have bulb sockets.
>Did you pull the panel and look at the back to see if it has burnt
>out bulbs or are the bulbs just taken out of the sockets?
>
>The gauge panel has a switch to read the gauges. When put in one
>position the gauges and the lights are on all the time. The other
>direction of the switch is a momentary contact that shows the gauges
>and the lights only when you hold down the switch.
>
>Unless someone has pulled out the bulbs or changed the whole panel
>with a non-stock panel you should be just able to replace the bulbs
>and have light.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM
 
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