TM 10-3930-671 -10 3-3.  FLUID LEAKAGE DEFINITION. The  following  information  describes  the  different  types/classes  of  leaks  and  how  they  affect  the  status  of  the  truck. Become familiar with them and remember WHEN IN DOUBT, NOTIFY UNIT MAINTENANCE.  Class I and II  leaks  are considered minor leaks and operations can continue under these conditions.  When operating with these types of leaks, fluid levels must be checked regularly as required in the PMCS.  Class III leaks must be reported to unit maintenance for corrective action.  If there is any doubt about the type of leak, notify unit maintenance. a. Class I Leaks.  Class I leaks are identified by a wetness or  discoloration  not  great  enough  to  form  drops.    It  is more of a seepage than a leak. b. Class II Leaks.  Class II leaks are identified by a flow of fluid great enough to form drops but not great enough to cause the drops to fall from the leak point. c. Class Ill Leaks.  Class III leaks are identified by a flow of fluid great enough to form drops that fall from the leak point. (1) If a Class  III  leak  is  discovered  before  operating  the  truck,  the  truck  can  be  operated  as  long  as  the  fluid level is between the maximum and minimum points on the dipstick.  If the fluid level is below the minimum point on the dipstick, do not operate the truck and notify unit maintenance. (2) If a Class III leak is discovered during the operation of the truck, the operation can be completed as long as the leak is drops only and not a steady stream of fluid.  The fluid level must also be within its operating range.  If the leak is a steady stream and/or fluid level falls below minimum point on dipstick, turn off the truck and notify unit maintenance. (3) If a Class III leak is discovered after an operation is complete and the fluid level is below minimum on the dipstick, the truck cannot be operated until the leak is repaired. 3-4.  PMCS TABLE DESCRIPTION. The  PMCS  table  is  arranged  in  columns  that  inform  the  operator  which  item  is  being  inspected/serviced,  when  a  truck assembly or component should be inspected/serviced, where the item is located, the procedures necessary to accomplish the task, and the conditions that will prevent operation of the truck. a. Item No.  The Item No.  column provides a logical sequence for performing the PMCS tasks.  The items  being inspected can be visible, inside, or under the truck. b. Interval The Interval column provides the appropriate time interval for performing each task.  This column lists all the tasks according to the interval:  DAILY tasks Before, During, After, and WEEKLY tasks. c. Location.  This column lists the name of the assembly or component to be inspected/serviced and its location on the truck. d. Procedure.  The Procedure column provides the instructions necessary to accomplish the inspection/service.  It also lists important Warnings, Cautions, and Notes related to each task.  If a task is covered elsewhere in the manual, it is referenced by paragraph number rather than being repeated in this column. e. Not Fully Mission Capable If.  This column lists the conditions that will cause the truck to be inoperative.  If any of these conditions exist, the truck shall not be operated until they are corrected. 3-3