2. Disconnect the pipes from the brake booster. Plug all openings to prevent dirt from entering.
3. Working in the cabin, disconnect the brake booster pushrod from the lever, then unscrew the nuts securing the brake booster to the engine compartment bulkhead (see photo).

4. Installation is carried out in the reverse order. When finished, bleed the air from the hydraulic steering drive (see Chapter 10).
[The source of the article is available on the website ChevyMan]
