Late 60's - early 70's. It was a childrens show but not a cartoon. The two main charactors are a Robinson Caruso type guy and his monkey-man type side kick "Chaungo" (sp)? rhymes with "Shawn go". When ever the two got it a tight spot the main dude would say "Uh-Oh!!! Chaungo !!!" and the monkey-man Chaungo would go berserk and beat up all the bad guys?