Replacing front brake lines - remove proportioning valve?

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tophat36

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I really want to replace the front brake lines and hoses but as it goes for everyone, been a real bitch to get the flare fittings loose on the lines and at the proportioning valve. No issue getting the lines loosening on master cylinder. My question is, if I unbolt the proportioning valve or partially unbolt/loosen, will this make it easier? Only line I don’t have yet that attaches to the valve is the front to rear line. I could potentially just cut the others, but can’t mess that one up. Any thoughts or suggestions on this? The access to these fittings is pretty stupid. I can grab my crows feet from work but until then I’m trying to be creative. I guess I could buy line wrench crows feet, I think that exists. I can’t get a dang vice grip on the inside/tube side. Nothing seems to be working and I’m loosing faith :(
 

Old Guy Bill

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There are different sizes/styles of vise grips…
When you get ready to put it back together some Anti-Sieze on the threads of the fittings will prevent it from happening again.
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legopnuematic

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They exist.
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Have you tried a regular flare wrench?

If you have a flaring tool, you may be time ahead by just cutting the line, then cut it back a foot or two (wherever is most convenient), flare, and install a union (not a compression fitting). Bend a new line to prop valve.
 

legopnuematic

Licensed Junk Dealer
Supporting Member
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1,977
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4,448
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
Those Sunex flare crows-foot wrenches are on sale on Amazon for $12 for the set currently.

Here

I’ve got both the standard and metric sets, I’ve been pleased with them so far.
 

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