Our GMC's have alway been under cover when stored for the winter and a
cover to keep the sun off the coach in the summer time.

http://www.gmcmhphotos.com/photos/g3851-rv-cover.html

Since moving to our new place in 2004 I have had a large pole barn to put
all my "STUFF" into.

In all my years of storing the coaches thru the winter season (1998 thru
2005 & 2018/19) I have alway put blocks un the middle of bogy assemble.
The blocks are 8" tall, The blocks are NOT used to support the coach if
working underneath the coach. I have always stored the coach longterm with
the air out of the system. At this time i clean the air bags with 303
Aerospace Protectant that cleans the air bags and provides UV protection
for the following season.

<
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311.R1.TR12.TRC2.A0.H2.X303.TRS0&_nkw=303+aerospace+protectant&_sacat=0
>

This is how I do mine, your procedures may vary!

J.R. Wright
GMC Great Laker
GMCGL Tech Editor
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Under going Frame up Restoration)
On Location in Tucson


On Sat, Dec 14, 2019 at 12:09 PM James Hupy via Gmclist <
gmclist@list.gmcnet.org> wrote:

> It is not good to have the suspension collapsed without the air in the
> bags. They wrinkle up and a good deal of weight is applied to the wrinkles.
> Better to raise it to ride height or slightly higher than that, then
> block up under the bogie boxes enough that if you lose air, the weight of
> the coach is supported by the blocking.
> If you are a belt and suspenders kinda guy, block the tires entirely
> off the ground as well, and wrap them in such a way as to shield them from
> harmful ultraviolet radiation. (Sunlight) This will prevent flat spots in
> the spring when you wake up the coach from it's long winter nap.
> Here in Oregon, we have rallies year around. So, not much
> weatherization is done. Only for 3 or 4 weeks a year does it even get cold
> enough to worry about frozen pipes, tanks, etc.
> Jim Hupy
> Salem, Oregon
>
> On Sat, Dec 14, 2019, 10:43 AM John Phillips via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> My vote is to air them all the way up, block the rear end up and let it
>> settle on the blocks.
>> Unless your coach is better than mine you would have to run the
> compressor
>> at least once a week to keep the coach off the ground.
>> I would also block the front end to eliminate weight on the front tires.
>>
>> On Sat, Dec 14, 2019 at 9:47 AM Richard Denney via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> Too high and there's risk of hot-dogging, where the bag takes a
> permanent
>>> set in the curved shape. Too low and coach rests its weight on the
> shocks
>>> (which are at full extension).
>>>
>>> I rest mine on sections of 4x6x24" pressure-treated lumber made to use
> as
>>> posts for decks. I orient the long side vertically so that the coach
>> rests
>>> higher. I don't put the system on lower--I just let nature take its
>> course.
>>> I've never been able to completely eliminate the leaks.
>>>
>>> Rick "who needs to pressure-test the left bag" Denney
>>>
>>> On Sat, Dec 14, 2019 at 12:14 PM tonka6cuda6--- via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> Should one keep the suspension aired up or aired down for the winter
>>> while
>>>> being stored?
>>>> --
>>>> Rich Mondor,
>>>>
>>>> Brockville, ON
>>>>
>>>> 77 Hughes 2600
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> --
>>> '73 X-Glacier 230 "Jaws"
>>> Northern Virginia
>>> Offlist email: rick at rickdenney dot com
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>>
>>
>> --
>>
>> *John Phillips*
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
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>
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The original bags are three distinct layers. The inside layer is a soft
neoprene of military specs. The middle is a fabric, not unlike fire hose.
The outer layer is an extremely tough, durable, u.v. resistant neoprene.
Also military spec. Why military spec, you might ask.
Because those bags were developed to support the nuclear blast proof
buildings inside Cheyenne Mountain. Really good stuff. So, the outer layer
protects the inner two. The innermost one holds the air. Most of the time,
when you suspect a bag leak, it is at the end where the air valve is
located. It is usually a "0" ring that has worked loose or deteriorated.
Those fittings are a real bugger to loosen, but usually will yield to
persistent effort. The "0" ring is between two flat surfaces that each have
a partial groove machined into them. That "0" ring has to seat perfectly
between those plates, or they will leak. So, bubble test that juncture if
you suspect the bag is leaking. The bag will need to come out to replace
the "0" ring. Just what I know.
Jim Hupy
Salem, Oregon

On Sat, Dec 14, 2019, 12:38 PM tonka6cuda6--- via Gmclist <
gmclist@list.gmcnet.org> wrote:

> powwerjon wrote on Sat, 14 December 2019 15:20
>> Our GMC's have alway been under cover when stored for the winter and a
>> cover to keep the sun off the coach in the summer time.
>>
>> http://www.gmcmhphotos.com/photos/g3851-rv-cover.html
>>
>> Since moving to our new place in 2004 I have had a large pole barn to put
>> all my "STUFF" into.
>>
>> In all my years of storing the coaches thru the winter season (1998 thru
>> 2005 & 2018/19) I have alway put blocks un the middle of bogy assemble.
>> The blocks are 8" tall, The blocks are NOT used to support the coach if
>> working underneath the coach. I have always stored the coach longterm
> with
>> the air out of the system. At this time i clean the air bags with 303
>> Aerospace Protectant that cleans the air bags and provides UV protection
>> for the following season.
>>
>> >
> https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311.R1.TR12.TRC2.A0.H2.X303.TRS0&_nkw=303+aerospace+protectant&_sacat=0
>>>
>>
>> This is how I do mine, your procedures may vary!
>>
>> J.R. Wright
>> GMC Great Laker
>> GMCGL Tech Editor
>> GMC Eastern States
>> GMCMHI
>> TZE Zone Restorations
>> 78 Buskirk Custom 29.5' Stretch
>> 75 Avion (Under going Frame up Restoration)
>> On Location in Tucson
>>
>>
>> On Sat, Dec 14, 2019 at 12:09 PM James Hupy via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> It is not good to have the suspension collapsed without the air in the
>>> bags. They wrinkle up and a good deal of weight is applied to the
> wrinkles.
>>> Better to raise it to ride height or slightly higher than that,
> then
>>> block up under the bogie boxes enough that if you lose air, the
> weight of
>>> the coach is supported by the blocking.
>>> If you are a belt and suspenders kinda guy, block the tires
> entirely
>>> off the ground as well, and wrap them in such a way as to shield them
> from
>>> harmful ultraviolet radiation. (Sunlight) This will prevent flat
> spots in
>>> the spring when you wake up the coach from it's long winter nap.
>>> Here in Oregon, we have rallies year around. So, not much
>>> weatherization is done. Only for 3 or 4 weeks a year does it even get
> cold
>>> enough to worry about frozen pipes, tanks, etc.
>>> Jim Hupy
>>> Salem, Oregon
>>>
>>> On Sat, Dec 14, 2019, 10:43 AM John Phillips via Gmclist
> gmclist@list.gmcnet.org> wrote:
>>>
>>>> My vote is to air them all the way up, block the rear end up and let
> it
>>>> settle on the blocks.
>>>> Unless your coach is better than mine you would have to run the
>>> compressor
>>>> at least once a week to keep the coach off the ground.
>>>> I would also block the front end to eliminate weight on the front
> tires.
>>>>
>>>> On Sat, Dec 14, 2019 at 9:47 AM Richard Denney via Gmclist >
> gmclist@list.gmcnet.org> wrote:
>>>>
>>>> > Too high and there's risk of hot-dogging, where the bag takes a
>>> permanent
>>>> > set in the curved shape. Too low and coach rests its weight on the
>>> shocks
>>>> > (which are at full extension).
>>>> >
>>>> > I rest mine on sections of 4x6x24" pressure-treated lumber made to
> use
>>> as
>>>> > posts for decks. I orient the long side vertically so that the coach
>>>> rests
>>>> > higher. I don't put the system on lower--I just let nature take its
>>>> course.
>>>> > I've never been able to completely eliminate the leaks.
>>>> >
>>>> > Rick "who needs to pressure-test the left bag" Denney
>>>> >
>>>> > On Sat, Dec 14, 2019 at 12:14 PM tonka6cuda6--- via Gmclist >>
> gmclist@list.gmcnet.org> wrote:
>>>> >
>>>> >> Should one keep the suspension aired up or aired down for the
> winter
>>>> > while
>>>> >> being stored?
>>>> >> --
>>>> >> Rich Mondor,
>>>> >>
>>>> >> Brockville, ON
>>>> >>
>>>> >> 77 Hughes 2600
>>>> >>
>>>> >> _______________________________________________
>>>> >> GMCnet mailing list
>>>> >> Unsubscribe or Change List Options:
>>>> >> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>> >>
>>>> > --
>>>> > '73 X-Glacier 230 "Jaws"
>>>> > Northern Virginia
>>>> > Offlist email: rick at rickdenney dot com
>>>> > _______________________________________________
>>>> > GMCnet mailing list
>>>> > Unsubscribe or Change List Options:
>>>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>> >
>>>>
>>>>
>>>> --
>>>>
>>>> *John Phillips*
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> I used 303 on my leather truck seats and its fantastic stuff.....never
> thought of using it on the bags....might have to give it a go.
>
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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