[AT] Chevroplet 8500 Air brake issue

[Cecil Bearden]

My real problem is not getting the collars to release, the problems is 
getting to the collars period.  They are back behind the a/C duct, a 
hard formed plastic duct made like a T section starting in the center of 
the dash and the firewall fittings are behind that duct, and one line 
that tees off from the park valve runs over the brake pedal bracket and 
left to who knows where, maybe to a warning indicator..
Cecil


On 1/20/2022 6:57 PM, Bo Hinch wrote:
> Maybe so Steve but that is the one I used in my business for 25 years 
> and have never found a line yet that it didn`t work on . Just saying m.
>
> On Thu, Jan 20, 2022 at 6:50 PM Steve W. <swilliams268 at frontier.com 
> <mailto:swilliams268 at frontier.com>> wrote:
>
>     The one for the GM /Bendix couplers Cecil is dealing with is more
>     like the thin plastic ones that Lisle sells, but it’s thin walled
>     steel. The one you have is too thick to fit in them.
>
>     *From: *Bo Hinch <mailto:bohinch at gmail.com>
>     *Sent: *Thursday, January 20, 2022 6:26 PM
>     *To: *Antique Tractor Email Discussion Group
>     <mailto:at at lists.antique-tractor.com>
>     *Subject: *Re: [AT] Chevroplet 8500 Air brake issue
>
>     I have all the differant disconnect tools but this one is my
>     faveroit of all .
>     https://www.amazon.com/Tools-3290-Sprng-Coupling-Tool/dp/B0002SRD0A
>
>     On Thu, Jan 20, 2022 at 2:51 PM Steve W.
>     <swilliams268 at frontier.com <mailto:swilliams268 at frontier.com>> wrote:
>
>         The main thing with those fittings is that the teeth like lo
>         dig in from the vibration so trying to release them becomes a
>         chore. There used to be a tool out there similar to what
>         others have posted but it was very thin wall steel that would
>         slip over the tube and allow you to push the teeth out as you
>         pushed the retainer in. The thicker ones generally don’t fit
>         very well.
>
>          You might want to check with GM they used to have a 3 day
>         access to the truck service information for about 30 bucks.
>         https://www.acdelcotds.com/subscriptions#
>         <https://www.acdelcotds.com/subscriptions>
>         I have worked on a few bears and kicks over the years but
>         never behind the dash, most of the time it was for wiring
>         problems. Sorry.
>
>         *From: *Cecil Bearden <mailto:crbearden at copper.net>
>         *Sent: *Tuesday, January 18, 2022 7:35 PM
>         *To: *at at lists.antique-tractor.com
>         <mailto:at at lists.antique-tractor.com>
>         *Subject: *Re: [AT] Chevroplet 8500 Air brake issue
>
>         I have an air leak under the dash in my C8500 1998 Chevrolet
>         tractor mover.  I have the instrument cluster out and can
>         barely reach to the fittings in the firewall.  Ther eis one
>         line that goes from the parking valve to over the top of the
>         steering column to who knows where.  My leak is somewhere
>         beyond the air valve.  It really hisses.  I have replaced
>         nearly all the fittings last spring on this thing.  I have an
>         alcohol tank ordered.  Those quick connect fittings are a pain
>         in the butt...  Does anyone have any experience with these.. 
>         Maybe Steve W..???  The factory service manual is $300+, and I
>         have tried to download 2 times today and it failed. I will
>         wait until tonight after midnight to download...
>         Cecil
>
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