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[oletrucks] Disk brake problem

To: oletrucks <oletrucks@autox.team.net>
Subject: [oletrucks] Disk brake problem
From: "Hanlon, Bill" <Bill.Hanlon@COMPAQ.com>
Date: Fri, 14 Apr 2000 15:25:27 -0500
I am in the process of installing a front disk brake kit on 
my (according to VIN plate) '57 GMC 1/2 ton.  

The "frame end" of front drum brake hoses currently on the 
truck mount to the frame by passing through the frame and 
having a 5/8" nut attach from the inside of the frame.  So 
the "frame end" of the hose is threaded on the outside to 
accept this nut as well as on the inside to accept the male 
metal brake line (3/16 NPT if I remember right) that comes 
from the master cylinder.  

The replacement hoses sent by my supplier of the 
brake kit have only the inside thread.  The kit claims 
to be for a 47-59.  When I asked the supplier to 
look at one of his regular drum type replacement 
hoses for a 57 he says the "frame" end is identical 
to the disk brake hose.  However, when he pulled a 
drum brake hose for a 55-2 through 56 the "frame" 
end of the hose was like the one on my "57".

Have any of you installed disk brakes on the front of 
a 55-2/56 with any luck?  If so, did you run into this 
problem?  If so, what did you do about it?

Could one of you with 57-59 trucks take a look at 
the manner of attaching the front brake hose to the 
line coming from the master cylinder?  Is there some 
kind of brass fitting inside the frame that somehow 
bolts to the frame to prevent the hose from rattling 
around?  Please describe the connection from the 
front hose to the rest of the system.

As always, thanks for your expertise.

oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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