TM 9-2350-256-20CHAPTER 5MAINTENANCE OF ENGINE COOLING SYSTEMCHAPTER OVERVIEWThis chapter describes how to remove, disassemble, inspect, clean, assemble, and install the engine cooling systemcomponents.This chapter consists of the following sections:PageSection I: Engine Cooling Fans 5-1Section II: Engine Oil Coolers5-9SECTION I: ENGINE COOLING FANSPara.TaskPage5—1Replace Engine Cooling Fan Shroud Seals........................................................................................... 5-15—2Replace Engine Cooling Fans............................................................................................................... 5-25—3Replace/Repair Engine Cooling Fan Housings...................................................................................... 5-35—4Replace Engine Cooling Fan Shroud and Related Parts ....................................................................... 5-55—5Replace/Repair Engine Cooling Fan Vertical Shaft Oil Seals ................................................................ 5-75— 1 REPLACE ENGINE COOLING FAN SHROUD SEALSTHIS TASK COVERSa. Removalb. InstallationINITIAL SET-UPTools:Parts:Equipment Condition:Tool kit, general mechanic'sLockwashers (27) (Appendix G,Engine deck removed (see(Appendix C, item 53)item 132)paragraph 9-51)a.REMOVAL1Remove four comer seals (1) by removing fourscrews (2), four lockwashers (3), and four flatwashers (4).2Remove two end seals (5) by removing sevenscrews (6), seven lockwashers (7), and seven flatwashers (8).3Remove 2 side seals (9) by removing 16 screws(10), 16 lockwashers (11), and 16 flat washers (12).b.INSTALLATION1Install 2 side seals (9) by installing 16 flat washers(12), 16 new lockwashers (11), and 16 screws (10).2Install two end seals (5) by installing seven flatwashers (8), seven new lockwashers (7), and sevenscrews (6).3Install four comer seals (1) by installing four flat washers (4), four new lockwashers (3), and four screws (2).5—1
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