The fork bit goes between the BB and the cranks. Then whack the end with a mallet to act as a wedge. You can pick up short versions of these for about a fiver from a motor factor/Halfords, or longer versions (more useful on a bike to get past the chainring) for a little bit more.
You can also use a fork-type balljoint splitter.
The fork bit goes between the BB and the cranks. Then whack the end with a mallet to act as a wedge. You can pick up short versions of these for about a fiver from a motor factor/Halfords, or longer versions (more useful on a bike to get past the chainring) for a little bit more.