The San Diego Union-Tribune reported Robinson had been battling a brain tumour since 2005.

Robinson claimed long jump bronze at Munich 1972 behind compatriot Randy Williams.

He went on to beat Williams to gold in Montreal four years later after recording an effort of 8.35 metres.

Robinson also took gold in the long jump at the 1971 Pan American Games in Cali and silver in Mexico City in 1975.

Robinson retired in 1979 and coached at the San Diego Mesa College before becoming a physical education teacher.

In 2000, he was severely injured in a car accident after being hit by a drunk driver.

He was inducted into the National Track and Field Hall of Fame in the same year.

Robinson was later diagnosed with a brain tumour and was initially given months to live.

Olympic medallist Tonie Campbell described Robinson as "Mister San Diego".

"When people say a person was loved by many, perhaps no one quite fits this description more than Arnie," said Campbell, who won bronze in the 110m hurdles at Seoul 1988.

"Arnie truly gave his all to his friends, athletes, co-workers and teammates. 

"He was responsible for so many career starts including my own. 

"He was my mentor and my friend."