TM 5-3895-383-24 10. Repeat  Steps  8  and  9  until  the  system  is  completely clean. 11. Fill  the  cooling  system  with  the  Caterpillar  Premixed ELC. 12. Operate the engine until the engine  is  warmed.    While the   engine   is   running,   inspect   the   engine   for   leaks. Tighten  hose  clamps  and  connections  in  order  to  stop any leaks. 13. Attach  the  Special  Publication,  PEEP5027,  "Label"  to the radiator on the machine in order to indicate the use of Caterpillar ELC. NOTE: Clean   water   is   the   only   flushing   agent   that   is required    when    the    ELC    is    drained    from    the cooling system. Contamination of the ELC Cooling System NOTICE Mixing    ELC    with    other    products    that    do    not    meet Caterpillar  EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life. Use only Caterpillar products or commercial products that have  passed  the  Caterpillar  EC-1  specification  for  pre- mixed   or   concentrate   coolants.      Use   only   Caterpillar Extender with Caterpillar ELC. Failure   to   follow   these   recommendations   can   result   in shortened cooling system component life. In cooling systems that use Caterpillar ELC, do not add Diesel Engine    Antifreeze/Coolant    (DEAC)    as    a    makeup    coolant. Contamination of ELC by DEAC will defeat the advantages of ELC.  If the ELC in the cooling system becomes contaminated by more than 10 percent of the total system capacity of DEAC or SCA, perform one of the following operations: Drain   the   cooling   system   into   a   suitable   container. Dispose  of  the  coolant  according  to  local  regulations. Flush the system with clean water.  Fill the system with the Caterpillar ELC. Drain  a  portion  of  the  cooling  system  into  a  suitable container  according  to  local  regulations.    Then,  fill  the cooling system with premixed ELC.  This should lower the contamination to less than 10 percent. Maintain  the  system  as  a  conventional  Diesel  Engine Antifreeze/Coolant  (DEAC).    Treat  the  system  with  an SCA.        Change    the    coolant    at    the    interval    that    is recommended    for    the    conventional    Diesel    Engine Antifreeze/Coolant (DEAC). Extended Life Coolant (ELC) Cooling System Maintenance SMCS Code:  1350; 1352; 1395 NOTICE Use only Caterpillar products or commercial products that have  passed  Caterpillar  EC-1  specification  for  pre-mixed or concentrated coolants. Use only Caterpillar Extender with Extended Life Coolant. Mixing Extended Life Coolant with other products reduces the  Extended  Life  Coolant  service  life.    Failure  to  follow the recommendations can reduce cooling system components  life  unless  appropriate  corrective  action  is performed. In order to maintain the correct balance between the antifreeze and    the    additives,    you    must    maintain    the    recommended concentration  of  Extended  Life  Coolant  (ELC).    Lowering  the proportion of antifreeze lowers the proportion of additive.  This will lower the ability of the coolant to protect the system from pitting, from cavitation, from erosion, and from deposits. Proper additions to the Extended Life Coolant NOTE: Do    not    add    ELC    Concentrate    as    a    makeup solution for maintaining the correct coolant level. The  addition  of  the  concentrated  Extended  Life Coolant  will  increase  the  concentration  of  glycol in the cooling system. During daily maintenance, use the premixed ELC as a cooling system  top-off.    This  will  bring  the  coolant  up  to  the  proper level.      Use   ELC   or   use   a   coolant   that   meets   Caterpillar specifications (EC-1).  Check the specific gravity of the coolant system   with   the     1U-7298    Coolant/Battery    Tester    (Degree Celsius) or with the  1U-7297  Coolant/Battery  Tester  (Degree Fahrenheit).  Use ELC Concentrate to restore the proper glycol concentration  in  the  coolant  system.    This  should  be  done before the engine is exposed to freezing temperatures. Maintenance Section Cooling System Specifications 1-27