Unless packing has changed, the hinges come off the dust cover and the counterweight comes off the arm. When you remove the counterweight, if the rubber O rings on the arm are old and dry, they may tear off though and may have to be replaced. You won't know until you try. Usually, the packing comes with a rubber cap to cover the spindle hole so that nothing falls in. It's best to remove the oil and replace it with fresh oil when it is reassembled.