Replacing the aluminum coolant feeder and return pipes for the heater core. They are the lines that run front and back on the passenger side (US) of the engine compartment, under the coolant reservoir. But how is one supposed to get to the bolt that secures them to the body? This appears to be an "engine out" procedure.

 

Never mind, turns out - in a HUGE stroke of luck - that the pipe is not cracked after all. Okay to delete this thread (I didn't see a way for me to do it). Thanks.

 

Have you see it's not possible by wheel arch ?

 

I use a long gear wrench to reach down there and remove it. 1 of those indispensable tools that I have spent $1000's and $1000's on

 

It didn't appear that the wheel arch went far enough in to do that and I didn't see any kind of access hole near the bolt.

 

And to get it back on....?

 

i start with fingers(gotta have great finger control ), slip the gear wrench on then use a pry tool, screw driver etc to push against the back of the gear wrench to give enough pressure that the tool will ratchet and tighten it up. If it was all easy everyone would do it.
another tool i use on that stuff is a really short stubby cornwell 1/4" air ratchet with a swivel air hose adapter that was a few hundred bucks. And sometimes you just have to sacrifice blood and skin to get er done

 

When I replaced all coolant hoses on my 2007 a year ago, I struggled with the same issue as the OP related and decided that since the original aluminum pipes were fine, to leave well enough alone. So I have the replacement aluminum pipes as a decoration in my garage.

 

I did just the same