Believe it or not sometimes these simple inspections where all you do is pull out a bolt, inspect it and either replace it or reinstall it are likely to require gear swings, sometimes including emergency blow down extension. It seems excessive, but all of the work done has to be done in accordance with the aircraft maintenance manual and whatever reference the customer bulletin, service bulletin or airworthiness directive lists. If it was three simple bolts they'd of done it previously. Wonder how many sets of jacks they own?