For 1990-2009 cars

1. Clean the rear extension housing in a suitable solvent. Air dry the housing.
2. Inspect the extension housing for the following:

• | Cracks

• | Scratches

• | Damaged threads

• | Burrs

• | Nicked mounting surfaces

• | Damaged sealing surfaces

• | Damaged front or rear bearing bores

3. Replace a cracked housing.
4. Clean up damaged threads with the correct size thread tap.
5. Inspect the machined mating surfaces for flatness (Check the mating surfaces with a straight edge).
6. Use a fine mill file to dress minor scratches or burrs.