1. Clean the adjusting plug (3) and locknut (4) from pollution.
2. Mark the adjusting plug (3) and on the steering box. Put a new mark on the body, at a distance of 5 mm from the old one in the direction of screwing the cork.
3. Tighten the adjusting plug (3) until the mark on it matches up to the new mark and fix it with a lock nut (4).
4. Turn the steering mechanism from one extreme position to another and make sure that there is no jamming when the rack moves.