Harness Elt D-Sub Plug Sealing - ACR Electronics ME406 Series Abbreviated Component Maintenance Manual

(6) Connect the remote switch harness plug to the ELT, as follows:
(a) Press two sealant strips (850-0814) against the male pins of the ELT receptacle with the
tacky side against the pins, while peeling the foam backing off each sealant strip.
NOTE:
NOTE:
(b) Plug the remote switch harness plug into the ELT receptacle.
(c) Screw the thumbscrews into the ELT receptacle retaining nuts until the plug is seated
properly.
(7) Connect the antenna coax cable to the ELT.
(8) Tie up excess slack in the harness and coax cable, such that they form drip loops.
NOTE:
(9) Test the ELT installation in accordance with the requirements of SUBTASK 25-62-30-750-011,
on page 44.
NOTE:
NOTE:
SUBTASK 25-62-30-450-001
B.

Harness ELT D-Sub Plug Sealing

(1) Seal the D-Sub plug at the ELT end to prevent moisture from penetrating the connection, thus
preventing water from beading up and causing bridging between connector pins resulting in
possible activation of the ELT. Use the following procedure:
NOTE:
(a) Disconnect the remote switch harness D-Sub plug from the ELT.
(b) Separate the D-Sub housing halves.
(c) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-
8660C into the back side of the plug, such that the insulating compound surrounds the
D-Sub pin area and covers the back of the plug.
(d) Reinstall the housing halves.
(e) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-
8660C around the male pins of the ELT receptacle.
(f) Connect the remote switch harness plug to the ELT.
COBHAM AVIONICS WULFSBERG ELECTRONICS
ABBREVIATED COMPONENT MAINTENANCE MANUAL
ME406 (453-6603), ME406HM (453-6604)
Verify sealant strips match the receptacle shape.
Verify the sealant strips are in place on existing installations.
Steps (1) through (7) are applicable any time the ELT has been removed and
undergoes reinstallation. Step (8) is only applicable at initial installation or if the
wiring or coax cable has been disturbed.
It is very important the cockpit remote switch LED immediately begins flashing
continuously upon ELT activation. If the LED fails to start flashing, recheck the
interface wiring and connections between the ELT and the cockpit remote switch.
If verification of the digital message (i.e., 406 MHz burst) is desired, follow the
procedures outlined in SUBTASK 25-62-30-750-009, on page 43.
Perform the sealing process once all tests have been satisfactorily completed and all
harness connections have been verified to be correct.
25-62-30
Page 71 of 88
APR 06/10