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Rear brake lines on '51 3100 #395780
Mon Mar 31 2008 01:39 PM
Mon Mar 31 2008 01:39 PM
O
Ol' Red  Offline OP
Shop Shark
Joined: Feb 2008
Posts: 144
Claremore, Oklahoma
My first attempt at bleeding the brakes was not so successful, so I get to redo that. In doing so, I want to replace the brake line that runs along (parallel to) the rear axle.

There is a "junction block" that feeds this brake line. It accepts fittings that go on a 3/16" line (they take a 3/8" wrench), but the wheel cylinders accept larger fittings, ones which fit on a 1/4" brake line (they take a 7/16" wrench). Therefore, it is necessary to have a "union" which converts from a 3/16" line to a 1/4" line for each wheel.

These "unions" seems like built-in opportunities for leaks. Is this standard? Why would they engineer this into the system? Am I missing something? Is there a foolproof way to go from 3/16" to 1/4" line?


DJ
'51 Chevy 3104 1/2-ton 216 -- "6 cylinders, 6 volts!"
Down with sesquipedalianism!
Re: Rear brake lines on '51 3100 [Re: Ol' Red] #395787
Mon Mar 31 2008 02:06 PM
Mon Mar 31 2008 02:06 PM
B
BIG CHEVY 3600  Offline
Master Gabster
Joined: Oct 2006
Posts: 5,021
DALLAS/BLANCO TEXAS
Junctions and other fittings are not a problem if you tighten them enough. What kind of truck do you have?
Send pictures...


Jim
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The precisely coded genetic information in
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Re: Rear brake lines on '51 3100 [Re: BIG CHEVY 3600] #395803
Mon Mar 31 2008 02:43 PM
Mon Mar 31 2008 02:43 PM
U
Unsafe6  Offline
Apprentice
Joined: Mar 2008
Posts: 33
BC
Isnt There a 90deg. brass block with a banjo bolt and copper washers on each wheel cyl.? Mabey you have the wrong W/Cs.


I suffer from ADAD (Advance Design Acquisition Disorder)
Re: Rear brake lines on '51 3100 [Re: Unsafe6] #396127
Tue Apr 01 2008 03:41 AM
Tue Apr 01 2008 03:41 AM
Achipmunk  Online
Extreme Gabster
Joined: Dec 2001
Posts: 14,644
Boiling Springs, S. C. 29316
What Unsafe6 said.....


1937 Chevy Pickup
1952 Chevy Panel
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1950 Chevy Coupe

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I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
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Re: Rear brake lines on '51 3100 [Re: Achipmunk] #396150
Tue Apr 01 2008 04:40 AM
Tue Apr 01 2008 04:40 AM
O
Ol' Red  Offline OP
Shop Shark
Joined: Feb 2008
Posts: 144
Claremore, Oklahoma
Hmmmm....I don't know what a banjo bolt is, so I Googled it, and it looks like a bleeder screw (a hollow shaft with a hole that can be exposed by unscrewing it slightly). My W/Cs have bleeder screws, but the threaded fitting that connects the brake line to the W/C is not a banjo bolt, I would say. And there's definitely no "90 degree brass block" on my W/C. I will take pictures and post, as BigChevy suggests. It will be Wed or Thur before I can get to it, though. Thanks for your help!!

Last edited by ol_red; Tue Apr 01 2008 04:48 AM. Reason: added something

DJ
'51 Chevy 3104 1/2-ton 216 -- "6 cylinders, 6 volts!"
Down with sesquipedalianism!

Moderated by  53moneypit, Woogeroo 

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