Front Brake Line Issues

[SUX2BU99]

Right, I can't get to that, or crack the flare nut loose. I'll try the punch (or flatblade screwdriver) and hammer thing. I can't physically see the nut from up top but I can feel around for it easily.

Here is a picture of what this looks like in my truck. You can see the hard fuel line and while it looks like there is lots of room to the left, the frame bulges out which makes it impossible so far to get a wrench on there.

[SUX2BU99]

I've managed to get the hose off. I'll list below what it took to get me there since finding good detailed info about this notoriously frustrating task has been less than ideal and I'd like to help out somebody else who is in the same position as me. Here are some pointers:
- using a stubby 15/16" wrench is pointless and finding one is next to impossible
- my flare nut wrench was starting to round over the flare nut as it wouldn't move
- getting to the stamped nut that the 15/16" wrench fits on was literally impossible due to the fuel hard line being entirely in the way along with some ridiculous bulge in the frame right at the nut, preventing a wrench from getting on to the nut
- I started with getting the C clip off on the wheel side of the brake line to flex hose fitting at the frame by using an awl and a hammer. I didn't think it would come off but it did. My truck didn't have the U-shaped clip that was shown in the service manual diagrams
- after the C clip came off the hose was able to be pushed through the hole in the frame after giving it a few love taps from my hammer
- after cutting the hose between the clamp on the upper a-arm and the frame, I was able to actually get to the stamped nut in the engine bay by pushing the hard brake line back towards the engine block. By doing this I could actually get the 15/16" wrench on the stamped nut
- I took my alternator off to gain additional room and to see better what I was doing. This may or may not be necessary
- I put a vice grip on the flex hose side of the connection where a 5/8" wrench fits on the flats, and used this to hold the hose in place while I got the stamped nut loose and slipped it over the flare nut, which was still frozen in place
- I then put a vice grip on the flare nut and use a 5/8" wrench to loosen the flex hose from the flare nut. A stubby didn't have enough leverage but I could now fit a long 5/8" wrench and get enough torque to finally crack that fitting loose
- Liquid Wrench did NOTHING for me, after several doses of it over several days.

So I still have to put the new hose on but this is what worked for me. If you are about to take on the dreaded task of the passenger front brake hose, this may help you. There are some youtube videos out the but a few of the critical details they lacked, in particular how to get that C clip off and/or how to actually get to the stamped nut for removal

[SUX2BU99]

Further to above, the clamp that holds the hose to the upper control arm has a 1/2" bolt fed through a 1/2" nut that you have to get a wrench on the backside or it will just turn.

I had cut the hose above the clamp and after removing it I blew on the end of the hose I cut and NO air came out of the metal end at the caliper side. No wonder the caliper was hanging up....

[roundhouse]

Further to above, the clamp that holds the hose to the upper control arm has a 1/2" bolt fed through a 1/2" nut that you have to get a wrench on the backside or it will just turn.

I had cut the hose above the clamp and after removing it I blew on the end of the hose I cut and NO air came out of the metal end at the caliper side. No wonder the caliper was hanging up....

Yep.  Slice it right under the clamp and it will be swelled shut

Seen it a on almost every old Chebby