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Page Title: REPLACEMENT
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TM 5-4210-220-12 4-28.  ENGINE - Continued REPLACEMENT (1) Drain  the  cooling  system  by  opening  the  radiator  draincock.    The  engine  cooling  system  capacity  is approximately 16 gal (60 L). (2) Loosen hose clamps (4) and remove the crossover tube (5). (3) Loosen hose clamp (6) and disconnect hose (7) from water pump. (4) Remove the bolts (1) and lockwashers (2) securing the covers (3) to the thermostat housings. (5) Remove the thermostat covers (3) and gaskets (8).  Remove the thermostats (10) and discard. (6) Clean the thermostat sealing surfaces in the thermostat housing (11) and covers (3). (7) Remove the seals (9) from the thermostat covers and discard the seals. (8) Position the new seals (9) so the lip of the seal  faces away from the thermostat when installed.  Install with installer J8550 and driver handle J7079-2 (9).  Place a new gasket (8) on each thermostat housing (11). (10) Place new thermostats (10) in the thermostat housings. (11) Attach the covers (3) to the housings with bolts (1) and washers (2).  Tighten bolts to 35 ft. lb (47 Nm). (12) Slide the hose (7) between the water pump and right hand housing over the housing and tighten clamp (6). (13) Install the bypass tube (5) on both covers and tighten clamps (4). (14) Refill the cooling system as detailed in LO 5-4210-220-12. (15) Start  the  main  engine  and  check  for  leaks.    When  engine  cools  recheck  radiator  level.    Top  up  as required. 4-553

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