I have a slight leak at one of the junctions in the coolant line that runs
along the top perimeter of the engine compartment.  Intent is to pull the
bad hose clamp and reclamp as a first attempt.

The leak as at the junction of this:
http://www.van-cafe.com/home/van/page_1462_667/coolant-tube.html

and the driver's head at cylinder #4:
http://www.van-cafe.com/home/van/page_659_673/cooling-hose-comes-off-cyl-4-see-description.html

My question is does the system need to be bled after working on this
system?  I'm worried the coolant tube could be cracked and I'll need to
replace the entire perimeter tube with it's multiple junctions.  I saw
Ben's Place mentioning the engine compartment system is "self bleeding".

http://www.benplace.com/bleeding.htm

thanks,
Andrew
87 GL (2.2 engine)