1st gen 5 lug top brake caliper bolt stuck. Any tricks?

So I'm doing my wheel bearings and I need to get the caliper off so I can get access to the rotor and bearing hub. I got the bottom bolt off no problem with a 16 mm socket, but on the top brake caliper bolt the brake line is right in front of the bolt so I can't fit a socket on there. I've tried using a wrench and it started to strip it. I think I could get it off if I could fit a socket on there but I don't see how I could do that without removing the brake line and bleeding the system. Anybody solve this issue or see a way around it?
Thanks

 

A crescent wrench would be worse here, it will cam the jaws open and round the head.

There's a reason they're referred to as a "nut fucker" in some circles.

I would try removing the clips on the brake line and gently bending the hardline back if needed to get the appropriate six point socket on it.

 

well, I goofed…have a bad head cold…meant channel-lock.

I was hoping OP could get a more precise tight grip to loosen it

 

I use a smooth jaw vise grip on the rubber brake line.

Remove the hard brake line giving access to the bolt with the impact .

Do what needs done one caliper to bleed with the vacuum bleeder finished.

 

On that single cylinder caliper everything is kinda crammed together...

You'll have to loosen that banjo fiting and spin it a little bit.....which will almost certainly let a little air in...because you have to clear were that nipple sticks in....

My oem flex hoses were almost 25yr, so replaced with stainless, much better design......tho it took two tries to get one long enough for rear......

Normal Break fluid is suppose to be replace every 3 yr......after that it starts corroding metal surfaces undetected.....and then seals fail/leak right on the corroded edges.....

You can see in these pics that one bolt that OP is talkin about is slightly rounded.....

 

Shoot some penetrant and heat that 16mm a little.....

 

Could the OP get a flare nut wrench on it to pop it loose?

 

Yeah I though about that.....the larger the flare wrench....the easier it is to strip it....
egr temp sensor going into intake plenum is where I found this out....
Ideal would be a six sided box.......

I tell you ......heat and lube will do the trick.....I promise......
I have a little mini torch from harbor freight that's a 25yr old trucks best friend......

And I hate those old plastic brake lines......reminds me of those hoses on your washing machine.....you know the ones that break while your on vacation......
Got rid of mine first year I got the truck.....