Help with pentrating oil, travel and more insanity

H

hdavis

New member
Mar 13, 1998
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After the Casa de Fruta visit, my wife and I finally decided how to tackle
the rest of the coach retrofit. Now two problems:

1. I just got a phone call from a client (the same one that kept me from
camping at Casa de Fruta) and I'll be sort of off-list starting Thursday
through about the 17th of May. So, don't expect a lot of responses from me
until then!

2. I can't find the recommendations that folks had for a pentrating
oil/rust buster to use on the inside of the coach for those corroded screws
(I have a ton of them to replace). So, any suggestions would be gratefully
received.

Now for the insanity - we bought a second GMC last month. Well, I should
say that we bought a half of a 77 Royale. The other half that we bought
this month was an engine, transmission, final drive, and a bunch of misc
parts. The previous coach owner had planned to rebuild the drive train and
gave up - selling the cores. So, a coach sat all by its lonesome. The
mechanics who had a lien on it were considering parting it out, but gave me
a reasonably good deal on the shell. I'm looking for anybody's experience
with the rear dry bath that Coachmen put into some of these units. What to
look out for, what to inspect/rebuild that's different from the GMC wet bath?

On another front, I now have owners manuals and a few technical documents
for the Thermasan unit that was an option on the coach. Thetford bought
Thermasan and closed the operation around 1980 when RVs weren't selling too
well. Unfortunately all of the Thermasan experts have retired. I have a
complete unit - minus the injector assembly that goes into the exhaust.
What I'm trying to do is find new replacement parts for these units so that
anyone who wants to run a Thermasan can do so. The pump is a pretty
standard looking item that can probably be replaced with a new unit. The
controls are pretty simple. BUT, I need detailed pictures/drawings etc for
the injector. Can anybody help me with this item?

Thanks,

Henry
PS TZE # etc will come late this month Dave.

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Henry,
One of the GMC websites has a detailed drawing
of the thermosan system. I think it's the
patent specs so might be diffrent then the
one used on the GMC. Course..I could be wrong.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of Henry Davis
> Sent: Sunday, April 25, 1999 10:15 PM
> To: gmcmotorhome
> Subject: GMC: Help with pentrating oil, travel and more insanity
>
>
> After the Casa de Fruta visit, my wife and I finally decided how to tackle
> the rest of the coach retrofit. Now two problems:
>
> 1. I just got a phone call from a client (the same one that kept me from
> camping at Casa de Fruta) and I'll be sort of off-list starting Thursday
> through about the 17th of May. So, don't expect a lot of responses from me
> until then!
>
> 2. I can't find the recommendations that folks had for a pentrating
> oil/rust buster to use on the inside of the coach for those
> corroded screws
> (I have a ton of them to replace). So, any suggestions would be gratefully
> received.
>
> Now for the insanity - we bought a second GMC last month. Well, I should
> say that we bought a half of a 77 Royale. The other half that we bought
> this month was an engine, transmission, final drive, and a bunch of misc
> parts. The previous coach owner had planned to rebuild the drive train and
> gave up - selling the cores. So, a coach sat all by its lonesome. The
> mechanics who had a lien on it were considering parting it out,
> but gave me
> a reasonably good deal on the shell. I'm looking for anybody's experience
> with the rear dry bath that Coachmen put into some of these units. What to
> look out for, what to inspect/rebuild that's different from the
> GMC wet bath?
>
> On another front, I now have owners manuals and a few technical documents
> for the Thermasan unit that was an option on the coach. Thetford bought
> Thermasan and closed the operation around 1980 when RVs weren't
> selling too
> well. Unfortunately all of the Thermasan experts have retired. I have a
> complete unit - minus the injector assembly that goes into the exhaust.
> What I'm trying to do is find new replacement parts for these
> units so that
> anyone who wants to run a Thermasan can do so. The pump is a pretty
> standard looking item that can probably be replaced with a new unit. The
> controls are pretty simple. BUT, I need detailed pictures/drawings etc for
> the injector. Can anybody help me with this item?
>
> Thanks,
>
> Henry
> PS TZE # etc will come late this month Dave.
>
> Henry Davis Consulting, Inc / new product consulting
> PO Box 1270 / product readiness reviews
> Soquel, Ca 95073 / IP reviews
> ph: (831) 462-5199 / full service marketing
> fax: (831) 462-5198
> http://www.henry-davis.com/ http://www.henry-davis.com
>
>
 
>Henry,
> One of the GMC websites has a detailed drawing
> of the thermosan system.

Yep! It's mine...

I think it's the
> patent specs so might be diffrent then the
> one used on the GMC. Course..I could be wrong.

I think that it's basically the same system, but I want to be certain. It's
a bit of work to reverse engineer this thing, and I'd like to make it
conform to the original unit as sold so the retrofit is legal.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
>
>
>Henry -- I can probably help you on this. I have a brand new Thermasan in a
>box. I've just never had the time to put it on. This includes the
>instructions, hoses and all other parts. This is not for sale. I can get
>you a diagram or draw up a sketch from the actual part.

I'd really like to get pictures and sketches. I have a pump and the control
system. I'm missing the injector assembly and want to fabricate "new" ones.
I'm very interested in how they managed to keep the hoses etc from
clogging. ALso, the type of material for the injector assembly is quite
important. I think that the injector and screen are stainless, but I don't
know about the rest of the injector parts.

I know someone who
>has several motor/pumps and some of the controller modules. There were
three
>types of control boxes. I could check to see if he wants to sell any of the
>motor/pumps or controllers if there is an interest. I can get the manual
and
>installation instructions Xeroxed if anyone needs them.

I have one owner's manual and two pages of installation info faxed from the
factory. I'd love to get any more information that you might have. If your
friend want to sell some pieces please let me know.

Henry
Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Henry,
What a Faux Pas, the website is YOURs!
You must need more info huh?
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of Rob Teed
> Sent: Sunday, April 25, 1999 11:23 PM
> To: gmcmotorhome
> Subject: RE: GMC: Help with pentrating oil, travel and more insanity
>
>
> Henry,
> One of the GMC websites has a detailed drawing
> of the thermosan system. I think it's the
> patent specs so might be diffrent then the
> one used on the GMC. Course..I could be wrong.
> Rob Teed 74 Painted Desert
>
> > -----Original Message-----
> > From: owner-gmcmotorhome
> > [mailto:owner-gmcmotorhome]On Behalf Of Henry Davis
> > Sent: Sunday, April 25, 1999 10:15 PM
> > To: gmcmotorhome
> > Subject: GMC: Help with pentrating oil, travel and more insanity
> >
> >
> > After the Casa de Fruta visit, my wife and I finally decided
> how to tackle
> > the rest of the coach retrofit. Now two problems:
> >
> > 1. I just got a phone call from a client (the same one that kept me from
> > camping at Casa de Fruta) and I'll be sort of off-list starting Thursday
> > through about the 17th of May. So, don't expect a lot of
> responses from me
> > until then!
> >
> > 2. I can't find the recommendations that folks had for a pentrating
> > oil/rust buster to use on the inside of the coach for those
> > corroded screws
> > (I have a ton of them to replace). So, any suggestions would be
> gratefully
> > received.
> >
> > Now for the insanity - we bought a second GMC last month. Well, I should
> > say that we bought a half of a 77 Royale. The other half that we bought
> > this month was an engine, transmission, final drive, and a bunch of misc
> > parts. The previous coach owner had planned to rebuild the
> drive train and
> > gave up - selling the cores. So, a coach sat all by its lonesome. The
> > mechanics who had a lien on it were considering parting it out,
> > but gave me
> > a reasonably good deal on the shell. I'm looking for anybody's
> experience
> > with the rear dry bath that Coachmen put into some of these
> units. What to
> > look out for, what to inspect/rebuild that's different from the
> > GMC wet bath?
> >
> > On another front, I now have owners manuals and a few technical
> documents
> > for the Thermasan unit that was an option on the coach. Thetford bought
> > Thermasan and closed the operation around 1980 when RVs weren't
> > selling too
> > well. Unfortunately all of the Thermasan experts have retired. I have a
> > complete unit - minus the injector assembly that goes into the exhaust.
> > What I'm trying to do is find new replacement parts for these
> > units so that
> > anyone who wants to run a Thermasan can do so. The pump is a pretty
> > standard looking item that can probably be replaced with a new unit. The
> > controls are pretty simple. BUT, I need detailed
> pictures/drawings etc for
> > the injector. Can anybody help me with this item?
> >
> > Thanks,
> >
> > Henry
> > PS TZE # etc will come late this month Dave.
> >
> > Henry Davis Consulting, Inc / new product consulting
> > PO Box 1270 / product readiness reviews
> > Soquel, Ca 95073 / IP reviews
> > ph: (831) 462-5199 / full service marketing
> > fax: (831) 462-5198
> > http://www.henry-davis.com/ http://www.henry-davis.com
> >
> >
>
>
 
>Henry,
> What a Faux Pas, the website is YOURs!

No faux pas at all... the fact that anyone would remember that I put the
info up is a very good sign for the list. There's a whole lot of GMC stuff
on the net now, and that's making life a lot easier (and cheaper) for
everybody.

> You must need more info huh?

Well yeah - I want to recreate the darned thing.

Sorry to hear about your friend. My thoughts are with you.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Emery,
I'm interested. I am a carpenter, messed with
plumbing/waste lines...Hate it. Would think a
thermosan system would be a great benifit to
the GMC. Also..I have in my service manual
" Section 24m " quite a bit of info on the
thermansan system.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of
> EMERYSTORA
> Sent: Sunday, April 25, 1999 10:59 PM
> To: gmcmotorhome
> Subject: Re: GMC: Help with pentrating oil, travel and more insanity
>
>
>

>
> technical documents
> for the Thermasan unit that was an option on the coach. Thetford bought
> Thermasan and closed the operation around 1980 when RVs weren't
> selling too
> well. Unfortunately all of the Thermasan experts have retired. I have a
> complete unit - minus the injector assembly that goes into the exhaust.
> What I'm trying to do is find new replacement parts for these
> units so that
> anyone who wants to run a Thermasan can do so. The pump is a pretty
> standard looking item that can probably be replaced with a new unit. The
> controls are pretty simple. BUT, I need detailed pictures/drawings etc for
> the injector. Can anybody help me with this item? >>
>
> Henry -- I can probably help you on this. I have a brand new
> Thermasan in a
> box. I've just never had the time to put it on. This includes the
> instructions, hoses and all other parts. This is not for sale.
> I can get
> you a diagram or draw up a sketch from the actual part. I know
> someone who
> has several motor/pumps and some of the controller modules.
> There were three
> types of control boxes. I could check to see if he wants to sell
> any of the
> motor/pumps or controllers if there is an interest. I can get
> the manual and
> installation instructions Xeroxed if anyone needs them.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
 
>Thanks Henry,
> Do you have the section 24m from the service manual?

I think so - but I'll check. I have all of the parts (I think) for a system
except the injector. Since the injector is installed into the exhaust, I
want to make certain that everything is right before I start messing
around. I need to get sizes, material types, etc to have a unit made up.
Thermasan (Thetford) told me that they didn't have any parts for the units
at all. Otherwise, I'd just buy an injector and be done with it.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Thanks Henry,
Do you have the section 24m from the service manual?

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of Henry Davis
> Sent: Sunday, April 25, 1999 11:38 PM
> To: gmcmotorhome
> Subject: RE: GMC: Help with pentrating oil, travel and more insanity
>
>

> >Henry,
> > What a Faux Pas, the website is YOURs!
>
> No faux pas at all... the fact that anyone would remember that I put the
> info up is a very good sign for the list. There's a whole lot of GMC stuff
> on the net now, and that's making life a lot easier (and cheaper) for
> everybody.
>
> > You must need more info huh?
>
> Well yeah - I want to recreate the darned thing.
>
> Sorry to hear about your friend. My thoughts are with you.
>
> Henry
>
> Henry Davis Consulting, Inc / new product consulting
> PO Box 1270 / product readiness reviews
> Soquel, Ca 95073 / IP reviews
> ph: (831) 462-5199 / full service marketing
> fax: (831) 462-5198
> http://www.henry-davis.com/ http://www.henry-davis.com
>
>
 
>Henry
>PS TZE # etc will come late this month Dave.

I'm glad you didn't forget me, Henry......I sweated your lon message all
the way to the very end!! Thanks.. [g]

David Lee Greenberg
GMC Motorhome Registry
200 Macfarlane Drive PH 4
Delray Beach, FL 33483-6829
800-827-9989
 
>
>> .....Also..I have in my service manual
>> " Section 24m " quite a bit of info on the
>> thermansan system.....
>
>Rob,
> Would you be willing to copy and forward those pages to me? I'd
certainly
>pay any reasonable expenses. In my manual, it seems Cinnabar or GM has
>conveniently deleted section 24m completely!

Me too! And if the copies work out, I'll post them on my site. Don't think
GM will mind too much since they came from Thermsan, and Thetford doesn't
care.

Henry

>
>Rick Staples
>'75 Eleganza
>Louisville, CO
>
Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Hi Henry,
I tried to scan and send...but I'm too low on
harddrive space, says not enought memeory. I
have your fax number. Watch for it to come in.
Six pages total. I'll try sending it out ASAP.
Please scan and post on your website if you
are able.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of Henry Davis
> Sent: Monday, April 26, 1999 10:16 AM
> To: gmcmotorhome
> Subject: Re: GMC: Help with pentrating oil, travel and more insanity
>
>

> >
> >> .....Also..I have in my service manual
> >> " Section 24m " quite a bit of info on the
> >> thermansan system.....
> >
> >Rob,
> > Would you be willing to copy and forward those pages to me? I'd
> certainly
> >pay any reasonable expenses. In my manual, it seems Cinnabar or GM has
> >conveniently deleted section 24m completely!
>
> Me too! And if the copies work out, I'll post them on my site. Don't think
> GM will mind too much since they came from Thermsan, and Thetford doesn't
> care.
>
> Henry
>
> >
> >Rick Staples
> >'75 Eleganza
> >Louisville, CO
> >
> Henry Davis Consulting, Inc / new product consulting
> PO Box 1270 / product readiness reviews
> Soquel, Ca 95073 / IP reviews
> ph: (831) 462-5199 / full service marketing
> fax: (831) 462-5198
> http://www.henry-davis.com/ http://www.henry-davis.com
>
>
 
Lanier,
I'm faxing this section to Henry Davis. I'll
try to get him to post on the website.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of HLBF
> Sent: Monday, April 26, 1999 11:25 AM
> To: gmcmotorhome
> Subject: Re: GMC: Help with pentrating oil, travel and more insanity
>
>
> In a message dated 4/26/99 9:17:16 AM Central Daylight Time,

>
> >
> > >Rob,
> > > Would you be willing to copy and forward those pages to me? I'd
> > certainly
> > >pay any reasonable expenses. In my manual, it seems Cinnabar
> or GM has
> > >conveniently deleted section 24m completely!
> >
> Rob,
> Me too - 24M completely missing from my book.
> Thanks,
> Lanier
>
 
>Hi Henry,
> I tried to scan and send...but I'm too low on
> harddrive space, says not enought memeory. I
> have your fax number. Watch for it to come in.
> Six pages total. I'll try sending it out ASAP.
> Please scan and post on your website if you
> are able.

Rob,

I'll try - I leave on a business trip tomorrow at 9:30 AM California time.
I won'r be back for 3 weeks. I can ask Irene to do some of the scanning
etc. if she has time.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Hi Henry,
Did you get the fax I sebt ya? m24 section from
my GMC manual.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of Henry Davis
> Sent: Sunday, April 25, 1999 11:38 PM
> To: gmcmotorhome
> Subject: RE: GMC: Help with pentrating oil, travel and more insanity
>
>

> >Henry,
> > What a Faux Pas, the website is YOURs!
>
> No faux pas at all... the fact that anyone would remember that I put the
> info up is a very good sign for the list. There's a whole lot of GMC stuff
> on the net now, and that's making life a lot easier (and cheaper) for
> everybody.
>
> > You must need more info huh?
>
> Well yeah - I want to recreate the darned thing.
>
> Sorry to hear about your friend. My thoughts are with you.
>
> Henry
>
> Henry Davis Consulting, Inc / new product consulting
> PO Box 1270 / product readiness reviews
> Soquel, Ca 95073 / IP reviews
> ph: (831) 462-5199 / full service marketing
> fax: (831) 462-5198
> http://www.henry-davis.com/ http://www.henry-davis.com
>
>
 
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