TM 10-5410-228-24
2.14 ENVIRONMENTAL CONTROL UNIT (ECU).
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Tools/Test Equipment:
Equipment Conditions:
Shop Equipment, Automotive Maintenance and
ECV parking brake set.
Repair (Item 38, Appendix B)
ECU work platform installed
(reference TM 10-5410-228-10).
Materials/Parts:
One Hundred and One Lockwashers (Item 18,
References:
TM 10-5411-224-14
a. Removal (Refer to Figure 2-56)
Remove 32 screws (1), 32 lockwashers (2) and 32 flat washers (3) securing passenger side rear cover
assembly (4) to ECU (5). Discard 32 lockwashers (2).
b. Installation (Refer to Figure 2-56)
Secure passenger side rear cover assembly (4) to ECU (5) with 32 screws (1), 32 new lockwashers (2)
(Item 18, Appx E) and 32 flat washers (3).
NOTE
Remove/disassemble only to the extent necessary to remove or replace defective
assemblies/components. Use standard maintenance shop practices/procedures.
a. Removal (Refer to Figure 2-56)
Release six vise action tool operated latches (6) securing driver side rear cover assembly (7) to ECU
(5).
b. Installation (Refer to Figure 2-56)
Secure driver side rear cover assembly (7) to ECU (5) by latching six vise action tool operated latches
(6).
Top Front Cover Assembly.
a. Removal (Refer to Figure 2-56)
Release six flush mounted latches (8) securing top front cover assembly (9) to ECU (5).
b. Installation (Refer to Figure 2-56)
Secure top front cover assembly (9) to ECU (5) by latching six flush mounted latches (8).
Venturi Screen.
a. Removal (Refer to Figure 2-56)
(1) Remove eight screws (10), eight lockwashers (11) and eight flat washers (12) securing venturi
screen frame (13) to ECU (5). Discard eight lockwashers (11).
(2) Remove three screws (14) securing venturi weldment (15) to ECU (5) and remove venturi
weldment (5).
b. Installation (Refer to Figure 2-56)
(1)
Secure venturi weldment (15) to ECU (5) with three screws (14).