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Re: [GMCnet] Disc brake project still in failure mode [message #282500 is a reply to message #282486] Sun, 19 July 2015 17:04 Go to previous messageGo to previous message
wally is currently offline  wally   United States
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
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Senior Member
Neil Fonville wrote on Sun, 19 July 2015 15:27
Yes I did swap the lines. Front line on the old moved to Back on new MC.
And vice versa.

What is a Step bore in the MC?

On 7/19/15, 2:54 PM, "Gmclist on behalf of James Hupy"



If your p30 master crosses a Dorman M39309 it is not a step bore. I took one apart.
http://www.gmcmhphotos.com/photos/g6798-p-30-master-cylinder-disassembled.html
I wonder why the differential pressure switch is not activating making the brake light come on? Is there some thing in the rear part of the combination valve that is effecting pressure? It shouldn't.


Wally Anderson
Omaha NE
75 Glenbrook
 
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