Legs, arms, shoulder brackets, vertical stabilisers, chest plate and cockpit shield are all detached and re-attached during transformation (hence 'rebuildable'), all else is hinged and connected during transformation.
My flickr photostream for more details and larger photos: http://www.flickr.co...s/11181786@N02/
Special thanks to the Macross Mecha Manual for fighter mode schematics. I love that site.
Canopy shield rests on the head base under the chest plate. Detaching the legs unlocks the fuselage hinges and frees the chest plate and canopy shield to lift out and be reattached.