Home » Public Forums » GMCnet » airbag / driveablity question
| airbag / driveablity question [message #281620] |
Tue, 07 July 2015 07:59  |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
Karma: 0
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Senior Member |
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On my last outing I had a rear tire blow out. Usually that would not be a all that bad except that the tire then damaged the airbag. When the back end of these hit bottom, well that was not a fun day.
I put 4 x 4 below airbag to hold up side for me to get home.
I usually just block up from below at rear suspension and let air out of bags while it is parked for any time. This time I blocked up the good side same as bad side. block is not attached, just sitting there, wedged in due to weight of rear on it.
Since there are shocks on rear, (is there a practical way to test if shocks are any good?), Blocks take away leveling, otherwise should I expect them to cause any ill effects? I have a spare bag, but wonder if there is a way to protect it so that same can not happen again. Tire that blew was fairly new, inflated properly, and not out of date. Now wife not to excited about going anywhere.
thanks
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] airbag / driveablity question [message #281626 is a reply to message #281620] |
Tue, 07 July 2015 09:08  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Brian,
You didn’t say how old the rear shocks are and what brand they are. On our first coach ( 77 Eleganza II ) purchased in 1998 it came with the Caspro Shocks, they are a heavy-duty version of the original GM shocks. They susposily had bigger guts and stronger eyelets on either end where you could break the Bilstein eyelets off under the right conditions. The only way to check your shocks is to remove them and see how they compress and expand. The Caspro shocks had no resistance in either direction when I tested them, they were about 12 years and 40K miles old. I went back in with the KYB shock on all 4 corners and the ride improved noticeably.
Gene has some very good info too: http://gmcmotorhome.info/services.html#SHOCKS
As for protecting the Air Bags from damage it can be a hit and miss situation. I had an SS airbag protector on each end of the air bag. That was on the 77 coach which we no longer have and I doubt if I have any pictures, but I will have to look on some CD storage disk. I have a lighter version in steel on the stretch and I can post pictures on what they look like later. The lighter version are more for stone protection, but the SS I had were made out of 3/16” SS.
I did find one example on the photo site.
http://www.gmcmhphotos.com/photos/boggie-straightening-tool/p15055.html
JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
> On Jul 7, 2015, at 8:59 AM, brian wrote:
>
> On my last outing I had a rear tire blow out. Usually that would not be a all that bad except that the tire then damaged the airbag. When the back end
> of these hit bottom, well that was not a fun day.
>
> I put 4 x 4 below airbag to hold up side for me to get home.
> I usually just block up from below at rear suspension and let air out of bags while it is parked for any time. This time I blocked up the good side
> same as bad side. block is not attached, just sitting there, wedged in due to weight of rear on it.
>
> Since there are shocks on rear, (is there a practical way to test if shocks are any good?), Blocks take away leveling, otherwise should I expect them
> to cause any ill effects? I have a spare bag, but wonder if there is a way to protect it so that same can not happen again. Tire that blew was fairly
> new, inflated properly, and not out of date. Now wife not to excited about going anywhere.
> thanks
> --
> brian
> asheboro, nc
> 75 eleganza, 74 build
> 119k miles and counting,
> DOG HOUSE
>
> _______________________________________________
> GMCnet mailing list
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] airbag / driveablity question [message #281627 is a reply to message #281620] |
Tue, 07 July 2015 09:16 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Brian,
I'm sorry but your email is a bit confusing.
If I understand you correctly you have put two pieces of 4" x 4" between the vertical arms on the bogie to keep them from moving
inwards and lowering the rear end of your GMC.
Not attaching the blocks to anything is not a good idea, you could hit a large bump as you drove and they could fall out.
To check the shock absorbers see Maintenance Manual X-7525 / Section 3A - Front Suspension (yes that's right) / Page 3A-4 / Problem
- Shock Absorber - Weak / Possible Cause 4. Worn out absorber - Rear.
Ragusa sells air bag gravel guards: http://www.ragusarv.com/
Click on Exterior and you'll find: RV-113 Air-Bag gravel guard $49 a pair
They MIGHT protect your new bag.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of brian
Sent: Tuesday, July 07, 2015 10:59 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] airbag / driveablity question
On my last outing I had a rear tire blow out. Usually that would not be a all that bad except that the tire then damaged the airbag.
When the back end of these hit bottom, well that was not a fun day.
I put 4 x 4 below airbag to hold up side for me to get home.
I usually just block up from below at rear suspension and let air out of bags while it is parked for any time. This time I blocked
up the good side same as bad side. block is not attached, just sitting there, wedged in due to weight of rear on it.
Since there are shocks on rear, (is there a practical way to test if shocks are any good?), Blocks take away leveling, otherwise
should I expect them to cause any ill effects? I have a spare bag, but wonder if there is a way to protect it so that same can not
happen again. Tire that blew was fairly new, inflated properly, and not out of date. Now wife not to excited about going anywhere.
thanks
--
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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