TM 10-5410-228-24
(3)
Remove four screws (33), four lockwashers (34) and four flat washers (35) securing recirculation
fan (31) to angle supports (36 and 37). Remove recirculation fan (31) from ECU enclosure (25).
Discard four lockwashers (34).
(4)
Remove coupling (19) and machine key (38) from shaft of recirculation fan (31). Discard machine
key (38).
b. Installation (Refer to Figure 3-8)
NOTE
Apply antiseize compound to all screws installed in blind rivet nuts.
(1)
Apply antiseize compound (Item 13, Appx C) to shaft of recirculation fan (31).
(2)
Align new machine key (38) (Item 6, Appx E) on shaft of recirculation fan (31) to coupling (19).
Damage to hydraulic motor can occur if not aligned properly. Check alignment of hydraulic
motor to coupling by turning recirculation fan. Recirculation fan should turn freely.
(3)
Align coupling halves. Put eight screws on loosely, spin fan, tighten screws a little more, spin
fan; coupling halves must align.
(4)
Secure recirculation fan (31) to angle supports (36 and 37) with four screws (33), four new
lockwashers (34) (Item 18, Appx E) and four flat washers (35). Torque screws to 50 5 in.-lb.
(5)
Secure recirculation fan (31) to blower mount (32) with four screws (28), four new lockwashers
(29) (Item 18, Appx E) and four flat washers (30). Torque screws to 50 5 in.-lb.
(6)
Apply sealant (Item 44, Appx C) to setscrew (27) and tighten.
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