TM 55-1930-209-14&P-15 Table C-1.  Preventive Maintenance Checks and Services for Miscellaneous Equipment (Continued) B - Before D - Daily Q - Quarterly D - During W - Weekly S - Semiannually A - After M - Monthly A - Annually ITEM PROCEDURES EQUIPMENT ITEM INTERVAL 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.    Make sure that the item being drilled, ground, pressed, or welded is being held securely in place.     h.    Check that indicator lights are operating properly.  Replace bulbs as necessary. i.      With welder started, but before welding, rotate current control through its entire range to lessen the possibility of contact freezing. j.      Check that arc welder electrode and work connections are tight.  Tighten as necessary. WARNING Grinding wheels can explode if they have received minor cracks when shipped or dur- ing replacement.  When starting a grinder for the first time or after installing a replace- ment wheel, the operator must stand to one side of the grinder for 1 minute after turning it ON. k.    Check grinder wheel for wear.  Replace Grinder wheel is after diameter is reduced to 2 inches reduced to 2 below original size. inches below normal size. I.      Check safety guard and vacuum bag for Safety guard proper operation.  Repair or replace as missing or necessary. inoperable. m.   Remove rust or corrosion.  Touch up paint in accordance with TB 43-0144. 3 Accesses a.    Visually check accesses for damage or System defects which could impair effectiveness and operability of doors, hatches, or port- holes, etc.  Repair as necessary. b.    Remove rust and corrosion.  Touch up paint in accordance with TB 43-0144 as necessary.  DO NOT paint threads or labels. C-6