Warning: Refer to Safety Glasses and Compressed Air Warning in the Preface section.
- Clean the rear extension housing in a suitable solvent. Air dry the housing.
- Inspect the extension housing for the following:
| • | Nicked mounting surfaces |
| • | Damaged sealing surfaces |
| • | Damaged front or rear bearing bores |
- Replace a cracked housing.
- Clean up damaged threads with the correct size thread tap.
- Inspect the machined mating surfaces for flatness. Check the mating surfaces with a straight edge.
- Use a fine mill file to dress minor scratches or burrs.
