ITEM INTERVAL ITEM TO BE PROCEDURES CHECK FOR AND HAVE REPAIRED OR ADJUSTED EQUIPMENT IS NOT READY NO. B    D    A D    W   M    Q   S A INSPECTED AS NECESSARY AVAILABLE IF TM 55-1930-209-14&P-7 Table C-1.  Preventive Maintenance Checks and Services for Compressed Air System (Continued) B - Before D - Daily Q - Quarterly D - During W- Weekly S - Semiannually A - After M - Monthly A - Annually 5) Replace any damaged parts using repair kit (CAGEC 04049, Part No. 1586R) parts (bottom plug O-ring, bottom spring, and/or disc assembly). 6) Assemble pressure regulator in sequence. 7) Start air compressor system. 8) Check for proper operation.  If still malfunctioning, shut down air com- pressor system and perform steps 10 thru 17. 9) f working properly, proceed to step 17. 10)   Remove six screws attaching bonnet to head casting and remove bonnet 11)   Remove spring button, adjusting spring, and relieving diaphragm 12)   Inspect diaphragm and diaphragm seat in head casting for tears, wear, or foreign material. 13)   Replace damaged or worn parts using adjusting spring hit parts (relieving diaphragm, adjusting spring, and/or spring button). 14)   Assemble parts in sequence.  Install bonnet and secure with six screws. 15)   Back off adjusting screw until it turns freely. 16)   Start air compressor system. 17)   Adjust pressure regulator to required setting of 40 psi.  Turn adjusting screw clockwise to increase pressure read- ing and counterclockwise to decrease pressure reading. 18)   Remove red tag from power panel 1 circuit breaker 3P5. C-21/(C-22 blank)