TM 5-6675-250-20
2 - 1 0 . T R O U B L E S H O O T I N G ( C o n t i n u e d )
Table 2-3. Troubleshooting (Continued)
M A L F U N C T I ON
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRONIC CONTROL UNIT (Continued)
2. E C U P A N E L L O O S E I N C A S E.
Check for damaged panel, loose or missing captive screws.
a. Visually check for missing captive screws.
b. Turn captive screw clockwise. If no tension is felt, captive screw is
d e f e c t i v e.
c .
If captive screws are defective, report defective ECU to Direct Sup-
p o r t M a i n t e n a n c e .
C A S ES
1.
IMPROPER SEALING OF TRANSPORT, TRANSIT OR
Step 1.
inspect for loose fasteners.
Tighten screws.
Step 2.
Inspect for defective fasteners.
ECU CASES.
a. Operate latch (2) and check for binding or other mechanical defects.
b. If defective, remove screws (1) attaching latch (2) and spacer (3) to
lower section of case (4).
c. Remove latch (2) and spacer (3) from lower section of case (4).
d. Remove screws (5) and latch (6) from upper section of case (7).
e. Apply a coating of sealant primer, Military Specification,
MIL-S-22473, Grade N, Form R, item 5, Appendix C, to the threads of at-
taching screws. Allow to air dry for 5 seconds. Apply MIL-S-46163, Grade
N, type II locking sealant, item 2, Appendix C, to the first few threads of
the screws.
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