Figure 11 Exploded view of a typical vacuum booster assembly

Exploded view of a vacuum booster assembly
  1. Boot
  2. Silencer
  3. Vacuum check valve
  4. Grommet
  5. Vacuum switch (some models)
  6. Grommet
  7. Front housing seal
  8. Primary piston bearing
  9. Rear housing
  10. Front housing
  11. Return spring
  12. Piston rod (gauged)
  13. Reaction retainer
  14. Power head silencer
  15. Diaphragm retainer
  16. Primary diaphragm
  17. Primary support plate
  18. Secondary piston bearing
  19. Housing divider
  20. Secondary diaphragm
  21. Secondary support plate
  22. Reaction disc
  23. Reaction piston
  24. Reaction body retainer
  25. Reaction body
  26. Air valve spring
  27. Reaction bumper
  28. Retain,rig ring
  29. Filter
  30. Retainer
  31. O-Ring
  32. Air valve push rod assembly
  33. Power piston

Figure 11 Exploded view of a typical vacuum booster assembly