STRUCTURE, FUNCTION, & MAINTENANCE STANDARD SWING MOTOR 12 1. Brake spring 2. Drive shaft 3. Spacer 4. Case 5. Disc 6. Plate 7. Brake piston 8. Housing 9. Piston 10. Cylinder block 11. Valve plate 12. Reverse prevention valve 13. Center shaft 14. Center spring 15. Safety valve 16. Check valve 17. Check valve spring 18. Shuttle valve 19. Shuttle valve spring PC210/240-7K 10-93