TM 55-1930-209-14&P-19 Table 7-2.  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 INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY (g)  Place two new belts on compres- sor pulley and then on motor pulley. (h)  Pull motor away from compressor until belts are as tight as possible and while another crew member holds motor in this position, tighten four bolts holding motor to base plate. NOTE When  installing  new  pulley  belts,  make sure belt tension is as tight as possible. Pulley  belts  stretch  with  use  and  must be  checked  for  proper  tension  at  next monthly maintenance service. (i)  With a straight edge, check that pulleys are at right angles to their shafts and that belts in their grooves are running straight.  If not, slightly loosen bolts holding electric motor and move motor until pulleys and belts are running straight in their grooves and are square with compressor and motor shafts.  Tighten motor bolts. Again check alignment with straight edge.  If not properly lined up, loosen motor bolts and try again.  When belts are straight, tighten four motor bolts wrench tight. 2)  Belt alignment/tension check: (a) Shut down air compressor system. (b) Redtag power panel 1 circuit breaker 3P5 indicating, "WARNING - DO NOT ACTIVATE. REPAIRS BEING MADE." 7-22