Starter ring gear, replace

# Replacing starter ring gear

Remove flywheel.

Drill 6mm hole about 8mm deep below a tooth gap in the face of the ring gear.

Use a chisel and hammer to cut the ring gear where you have drilled the hole.

Remove the ring gear.

### Installation

Heat the new ring gear to 200 - 230° C.

Place new ring gear on flywheel and knock into place with a brass punch.

Beveled edges of teeth face the engine, make sure the ring gear seats firmly all the way around.

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson