After making sure the cup has the right tightness (the spindle can turn smoothly without play), hold the cup in place with the pin spanner and use your hands to screw on the lock ring by turning it clockwise.

Then, using the pin spanner to hold the cup in place, tighten the lock ring using the lock ring wrench.

It's crucial to keep the cup as still as possible while you are spinning on the lock ring, or you will lose your setting and have to readjust the cup.

You might need to repeat this process several times in order to find the most suitable tightness. Check that the spindle still spins freely and without play before moving forward.