Master cylinder to proportioning valve hoses

[Musicars]

Came home tonight and was backing into my driveway when I decided to park it and have my wife sit in the driver's seat and push the brake pedal so I could check out the brightness of the new LED bulbs I installed during the day. She yells something about the pedal going to the floor. Sure enough there is no line pressure, therefore no brakes, I have a dash warning light on, and fluid dripping out just inside the driver's side front tire. This could have happened 5 minutes earlier in traffic.

I found the front hose, of the two hose that run from the master cylinder down to the proportioning valve, was leaking badly. It appears to be similar to a brake hose that would run to a caliper and has a stainless steel mesh armor. Right where it turns away from the fender well and heads to the valve it leaks.

Maybe I am searching using the wrong terms but I can't find any part numbers or diagrams for these hoses. Does anybody know if these are available?

Also, this is a 2006, how tough are these to bleed by yourself?

I have no problems bleeding when it involves a downstream part like a caliper or wheel cylinder but I am worried about air at the beginning of a ABS system.

 

[Sam Harris]

Came home tonight and was backing into my driveway when I decided to park it and have my wife sit in the driver's seat and push the brake pedal so I could check out the brightness of the new LED bulbs I installed during the day. She yells something about the pedal going to the floor. Sure enough there is no line pressure, therefore no brakes, I have a dash warning light on, and fluid dripping out just inside the driver's side front tire. This could have happened 5 minutes earlier in traffic.

I found the front hose, of the two hose that run from the master cylinder down to the proportioning valve, was leaking badly. It appears to be similar to a brake hose that would run to a caliper and has a stainless steel mesh armor. Right where it turns away from the fender well and heads to the valve it leaks.

Maybe I am searching using the wrong terms but I can't find any part numbers or diagrams for these hoses. Does anybody know if these are available?

Also, this is a 2006, how tough are these to bleed by yourself?

I have no problems bleeding when it involves a downstream part like a caliper or wheel cylinder but I am worried about air at the beginning of a ABS system.

Yikes! Glad you and your wife are ok.

 

[Doubeleive]

can you post a picture of where it is leaking?

 

[Musicars]

can you post a picture of where it is leaking?

Here are two pictures. I already cleaned off the fluid but the leak is within an inch of the arrow. Can't tell exactly since it is under the braided cover.

 

[Musicars]

No idea why the pictures came up twice.

 

[CountryBoy19]

That's a single assembly with the hard line isn't it? If so, it should be easy to find that part... you may have to go to the dealer...

 

[Musicars]

That's a single assembly with the hard line isn't it? If so, it should be easy to find that part... you may have to go to the dealer...

It appears to be flexible in the middle with a hard line and nut at each end.

Usually I can at least locate the part or a picture on ebay or elsewhere on the Internet, then I can find a part number. I can't find anything anywhere on this. I'll start making calls today. Thought this would be a simple replacement.

 

[Doubeleive]

looks like a front brake line but cant tell from your picture if it is the left or right, but if you go to rockauto, select your make, year, model: then there will be a search box come up, just type in brake line. then it will bring up all matches with pictures
for example I just did chevy/2004/suburban 1500/brake line
https://www.rockauto.com/en/catalog...1424191,brake+&+wheel+hub,hydraulic+hose,1792

 

[Musicars]

looks like a front brake line but cant tell from your picture if it is the left or right, but if you go to rockauto, select your make, year, model: then there will be a search box come up, just type in brake line. then it will bring up all matches with pictures
for example I just did chevy/2004/suburban 1500/brake line
https://www.rockauto.com/en/catalog...1424191,brake+&+wheel+hub,hydraulic+hose,1792

Thanks, but that is not it. It is the Master Cylinder to Proportioning Valve Pipe. I just found out from the dealer that it is discontinued. He gave me the part number, 21998445, but I can't find any anywhere. I 'll have to make a regular line with a loop in it for flex. Maybe when I take the old one out I can find someone to make one up like the original.

 

[Doubeleive]

junk yard will have one