Air Bag Air lines size and distance

[grant schaffer]

To all those who have nothing better to do, so I am looking at replacing the Air lines in the coach. I have searched on BDUB's site and nothing
stating length or size. My evaluation is that we are using 1/4" tubing through out the coach, has anyone researched how much tubing we need? I see
that some of the routing goes blind so some areas will be interesting to change out.
Any thoughts?
thanks
Grant
--
1974 GMC Sequoia 26'

 

[Jim Hupy]

Different years require differing amounts of lines. They all use 1/4"
diameter tubing. Jim K. knows which year coaches require the amounts. Give
him a call.
Jim Hupy
Salem, Oregon

On Tue, Nov 10, 2020, 9:56 AM Grant Schaffer via Gmclist <

> To all those who have nothing better to do, so I am looking at replacing
> the Air lines in the coach. I have searched on BDUB's site and nothing
> stating length or size. My evaluation is that we are using 1/4" tubing
> through out the coach, has anyone researched how much tubing we need? I see
> that some of the routing goes blind so some areas will be interesting to
> change out.
> Any thoughts?
> thanks
> Grant
> --
> 1974 GMC Sequoia 26'
>
>
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[LQQKatJon]

varies extensively by coach. later coaches the compressor is in the rear near the airbags and uses significantly less lines. the older coaches use
the most footage of lines.

your 74 sequoia in stock form, I am guessing uses a large amount of tubing. it is like you said simply 1/4 DOT rated air line hose, and used to be
able to get it reasonable from amazon in different colors, but now I think Ebay is the place to buy.

If your 74 is like the 73 I just worked on airlines this past weekend, they basically run from the dash out the firewall, drop down the body support
and follow the frame to the back driver side bogie. from there some lines hit the drive side air bag and valve, and other lines went up over the top
of a crossmember over to the passengerside airbag /valve.

on the 73, I was not able to remove the airlines that went on top of that crossmember between the bogies, and I left the cut off at the fender well
and where they popped out on driver side. and I had to drill a new hole to route the new line from the fender well to under the frame.

I was completely changing the system to microlevel so I do not know what is needed to replace them all. But it has to be a significate footage of
lines, there was a massive amount of airlines I removed.

--
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/