(2) Interval   Column.      This   column   tells   you when   you   must   do   the   procedure   in   the   procedure column.  BEFORE procedures must be done before you operate   or   use   the   equipment.      DURING   procedures must be done during the time you are operating or using the    equipment    for    its    intended    mission.          AFTER procedures  must  be  done  immediately  after  you  have operated or used the equipment. (3) Location,  Item  to  Check/Service  Column. This  column  provides  the  location  and  the  item  to  be checked or serviced.  The item location is underlined. (4) Procedure Column.  This column gives the procedures  you  must  do  to  check  or  service  the  item listed    in    the    Check/Service    column    to    know    if    the equipment  is  ready  or  available  for  its  intended  mission or for operation.  You must do the procedure at the time stated in the interval column. (5) Not   Fully   Mission   Capable   If.      Column. Information in this column tells you what faults will keep your  equipment  from  being  able  to  perform  its  primary mission. If you make check and service procedures that show   faults   listed   in   this   column,   do   not   operate   the equipment.    Follow  standard  operating  procedures  for maintaining     the     equipment     or     reporting     equipment failure. d. Other   Table   Entries.      Be   sure   to   observe   all special information and notes that appear in you table. 3-4. Leakage Definitions The   following   are   definitions   of   the   types/classes   of leakage  you  need  to  know  to  be  able  to  determine  the status of your equipment. CLASSIFICATION DEFINITION Class I Seepage of fluid (as indicated by wetness    or    discoloration)    not great enough to form drops. Class II Leakage of fluid great enough to form   drops   but   not   enough   to cause   drops   to   drip   from   the item being inspected. Class III Leakage of fluid great enough to cause   drops   to   drip   from   the item being inspected. NOTE Fluid   levels   of   items   with   Class   I   and Class II leaks must be checked often so proper levels can be kept. Class    III    leaks    must    be    reported    to supervisors   or   to   Organizational   Level Maintenance for corrective action. Table 3-1.  Operator Preventive Maintenance Checks and Services for Crawler-Mounted Rock Drill Item Item to Not Fully Mission No. Interval Check/ Service Procedure Capable If: Crawler and Carrier 1 Before Hydraulic Hoses and Inspect hydraulic hoses and cylinders for Class III leaks are found. Cylinders leaks or damaged condition. 2 Before Boom Drill Carriage Inspect all drill motor to boom bolt s.  If loose, report to organizational mainte- nance. 3 Before Tramming Motors a.  Remove drain plug and drain off water.  Install drain plug. b.  Check oil level.  If level is low, notify organizational maintenance. 4 Before Rock Drill Reservoir Check for proper oil level.  If level is low, notify organizational maintenance. 5 During Hydraulic Control Visually inspect hydraulic control valve Class III leaks are found. Valves for leaks. 6 During Air Motor and a.  Inspect air motor and hydraulic There are unusual noises, motor is Hydraulic Pump pump for proper operation.  Listen for sluggish, or equipment is operating unusual noises.  Check for sluggish erratically. Motor or erratic performance. During b.  Check motor exhaust for atomized Oil is present in exhaust. oil. 4