TM   5-3895-369-14 Table  2-3.  Operator  Preventive  Maintenance  Checks  and  Services  -  CONT. Item No. 20 21 22 23 24 Interval Weekly Weekly Weekly Weekly Weekly Location Item to Check/Service ENGINE Engine   battery and cables EXTERIOR Auxiliary   battery and  cables,  and battery  box. INTERIOR Grab-handles    and anti-skid  steps. ROPS/FOPS Operator’s   seat and  seat  belt. Procedure Not   Fully   Mission Capable  If: Do  not  smoke  or  allow  flame  or  spark  in the  vicinity  while  checking  or  filling  the batteries.  The  batteries  generate  hydrogen -  a  highly  explosive  gas.  Wear  safety goggles  when  adding  distilled  water. In   cold   operation   charge   batteries immediately  after  water  has  been  added  to prevent   freezing   and   damage   to   batteries; run  engine  for  one  hour  at  1500  RPM. Check   the   level   of   electrolyte.   Electrolyte level  should  be  above  the  plates  and  below the  fill  hole.  Check  for  broken,  loose,  or corroded   terminals   and   cables. Check   the   level   of   electrolyte.   Electrolyte level  should  be  above  the  plates  and  below the  fill  hole.  Check  for  broken,  loose,  or corroded   terminals   and   cables. Check  for  damage,  rust,  and  corrosion. Check  for  cracks  in  weldments  or  metal  on structure,  loose  or  lost  bolts,  worn  or damaged   rubber   mounting   pads,   and   rust   or corrosion. Check  seat  for  wear  and  tear.  Check  seat belt  for  damage  to  webbing,  buckle,  and adjustment   hardware.   Check   attachment hardware   and   anchorage   of   the   restraint system. Batteries  will  not  crank engine.   Cables   arc   broken loose,  or  heavily  corroded. Batteries  will  not  crank engine.   Cables   are   broken loose,  or  heavily  corroded. Grab-handles   and/or   anti- skid  steps  are  damaged, rusted,   or   corroded. ROPS/FOPS   damaged   or missing. Personal  safety  of  operator during   normal   operation   is impaired. 2-29