First, you better download the "AF-S VR Zoom-Nikkor ED 70-200mm f/2.8G IF REPAIR MANUAL". (The attatchment)

Remove Tripod mount (The one can be removed with only hands)

Remove tripod mount base by remove four screws.

short

long

Unscrew switch board and disconnect all three FPC's

Remove tripod ring, by removing three hidden screws. check the Repair Manual

Remove eleven screws and separate rear group. There is an empty hole.