Replacing rear tracking control arm and adjustment bolt on Peugeot 406 same as on many makes of car

Rear tracking control arm replacement to insure that the toe settings for the rear tracking are maintained and tyre wear minimised This was done on a peugeot 406 hdi estate, but many other makes and models have the same or similar rear tracking system as found on the 406. The toe in setting is 3mm +/- 1mm