Heys guys any info on this would be great.

I need to fit new reluctor rings into the rear disc rotors of my audi a4 1.9 tdi and am having trouble finding fitting instructions. oddly my haynes manual has no info on fitting the rings. I believe they are a push fitting into the disc but am unsure how far into the disc they should go in order for the abs proximity sensor to still pick up the teeth or whether there is a shoulder for it to stop against.

If anyone has any experience in fitting these before, any info would be greatly appreciated.

cheers
Martin