Neil, you still have air in the rear system, or, you have another non
functioning master cylinder. I would start with the rear brakes. Due to
the common supply line between the rear and intermediate brakes, you can
chase air back and forth between them, and I have noticed that some of the
bleeder screws are loose fitting and will draw air around them. If you
suspect that this is happening, release the pressure in the tank and
unscrew the bleeders and coat their threads with a liberal amount of
silicone compound, then re-bleed all the rear brakes until you no longer
see ANY BUBBLES in the bleeder hose. Hang in there. You should see at least
100° F over ambient with light to moderate braking on the rear disc rotors.
More on the fronts. They do 60 to 70% of the stopping. Hang in there, you
will be successful.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Jul 16, 2015 2:35 PM, "Neil Fonville" wrote:
> So today I created a new pin that is the correct length. I did find it
> helped some but not as much as I hoped. I ran out of time for more
> troubleshooting but I did learn the rears are not working at all. After
> driving a bit and applying the brakes numerous times, I took a temperature
> reading on all six rotors. The fronts were hot and not touchable at 140+
> degrees. All four rears were ambient at 100. That tells me I have the
> front working and need to troubleshoot the rear. I will apply the
> pressure gauge on the rear next.
>
> Neil
>
>
> _______________________________________________
> 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
GMCforum
Search
Help
Register
Login
Home
