TM 10-5410-228-24
3.9.21 ECU Replacement Continued.
NOTE
Record in ECV log book the date when boots are replaced.
d. Installation (Refer to Figure 3-26)
The ECU weighs approximately 1,100 pounds. Use proper lifting equipment and observe all
safety practices for lifting to prevent injury to personnel.
NOTE
Support ECU with pallet lifting fork until steps 1 through 5 have been accomplished.
(1)
Lift and position ECU (14) to LMS. Ensure that outlet air boot (31) and inlet air boot (34) are
positioned correctly in the LMS outlet and inlet cutouts.
(2)
Remove safety strap around ECU and pallet lifting fork.
(3)
Place a long strap and rachet around front of ECU and attached to lifting ring on rear of LMS,
compress gaskets to line up holes.
(4)
Secure mounting plate (26) to ECU (14) with fifteen screws (23), fifteen new lockwashers (24)
(Item 18, Appx E) and fifteen flat washers (25). Torque screws (23) to 50 in.-lb.
(5)
Secure passenger and driver side of ECU (14) to LMS with ten screws (20), ten new lockwashers
(21) (Item 19, Appx E) and ten flat washers (22). Torque screws (20) to 50 in.-lb.
(6)
Secure passenger and driver side of ECU (14) to LMS with twelve screws (17), twelve new
lockwashers (18) (Item 18, Appx E) and twelve flat washers (19). Torque screws (17) to 50 in.-lb.
(7)
Remove pallet lifting fork.
(8)
Position ECV windshield and install five hinge pins.
(9)
Secure two brackets to windshield with eight screws.
(10) Secure ECU (14) to two angle mounts (15 and 16) with ten screws (11), ten new lockwashers (12)
(Item 20, Appx E) and ten flat washers (13). Torque screws (11) to 80 in.-lb.
Wear gloves when working with sealers. Use in well ventilated area. Avoid prolonged contact
with skin.
(11) Apply sealer around the entire perimeter of mount plate (26), side plates of ECU, angle mounts
(15 and 16) and screw heads.
(12) Secure two bracket segments (10) to top and bottom of air outlet cutout on LMS with ten screws
(7), ten new lockwashers (8) (Item 17, Appx E) and ten flat washers (9). Torque screws (7) to 25
in.-lb.
(13) Secure two bracket segments (6) to sides of air outlet cutout on LMS with six screws (3), six new
lockwashers (4) (Item 17, Appx E) and six flat washers (5). Torque screws (3) to 25 in.-lb.
(14) Secure boot mounting frame (2) to inside of LMS with fourteen screws (1). Torque screws (1) to
50 in.-lb.
(15) Connect hoses, tubes and electrical connectors. Remove tags.
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