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EMERGENCY (JUMPER) STARTING
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TM-5-4210-230-14P-1 Aerial Ladder Fire Fighting Truck Manual
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Fig.  10  Removing Vent Manifold to Gain Access to Cells (Side Terminal Maintenance Free Battery)
TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 5.      On   negative   ground   vehicles,   attach   one   end   of   the remaining  jumper  cable  to  the  negative  terminal  of  the booster battery and the other end to a ground at least 304 mm   (12   inches)   from   the   battery   of   the   vehicle   being started   (Figure   9).      (DO   NOT   connect   directly   to   the negative    post    of    the    dead    battery.)        The    ground connection must provide good electrical conductivity and current carrying capacity. On positive ground vehicles, connect jumper cable between positive (+) terminal of booster battery and ground on the stalled vehicle. CAUTION Take   care   the   clamps   from   one   cable   do   not inadvertently touch the clamps on the other cable. DO    NOT    lean    over    the    battery    when    making connections. Avoid   moving,   hot   or   electrical   hazards   such   as fans,   manifolds   and   spark   plug   terminals   when connecting cables. 6.    Be  sure  everyone  is  standing  away  from  vehicles.    Start the engine of the vehicle with the booster battery.  Wait a few   minutes,   then   attempt   to   start   the   engine   of   the vehicle with the discharged battery. 7.  Do not operate the starter for more than 15 seconds.  Wait at  least  15  seconds  between  starting  attempts  to  allow starter  motor  to  cool.    If  the  engine  does  not  start  after several  cranking  attempts,  check  for  cause  of  failure  to start. 8.    After  starting,  allow  the  engine  to  return  to  idle  speed. Remove  ground  cable  connection  from  the  vehicle  with discharged  battery.    Then  remove  the  other  end  of  the same cable from the booster battery. 9.      Remove   the   other   cable   by   disconnecting   from   the discharged battery first and then disconnect the opposite end from the booster battery. 10.  Remove and discard cloths covering battery vents. TESTING A battery test should be performed whenever battery trouble is suspected. Battery testing will determine if: 1.  Battery is satisfactory and can remain in service. 2.      Battery   should   be   recharged   before   placing   it   back   in service. 3.  Battery must be replaced. A  complete  battery  test,  as  outlined  below,  will  include  these steps: 1)  Visual Inspection 2)  Specific Gravity (Hydrometer) Test 3)  Battery Capacity (Load) Test CAUTION When   performing   battery   test,   observe   rules   of safety.  Refer to SAFETY PRECAUTIONS. Always     follow     instructions     of     test     equipment manufacturer. STEP 1.  VISUAL INSPECTION a.      Visually   inspect   the   outside   of   the   battery   for obvious damage such as cracked or broken case or   cover   which   would   allow   electrolyte   loss. Check for terminal damage.  If obvious physical damage    is    found,    replace    the    battery.        If possible,  determine  the  cause  of  damage  and correct. b.  Check electrolyte level.  On maintenance free type batteries, access to battery cells can be obtained as follows: Side Terminal Batteries: Use   a   knife   blade   to   cut   through   top   plaque   center section.      (Cut   on   dotted   lines.)      Pry   up   ends   of   vent manifold with a screwdriver.  Remove manifold by pulling straight  up  at  the  ends  (Figure  10).    After  testing  cells, reinstall  manifold  by  placing  it  in  position  and  pushing  it down firmly until seated. Top Terminal Batteries Use  a  knife  blade  to  cut  through  the  top  plaque  center section on the dotted lines (Figure 11).  After removal of the CTS-2771-Page 10 PRINTED IN UNITED STATES OF AMERICA

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