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Detail Steps/Work Items Key Items/References
CAUTION: DO NOT OVER-TIGHTEN THE LOCKING SCREW. YOU CAN DAMAGE THE LOCKING MECHANISM.
(4) Continue to turn the screw until the unit is fully installed in the mounting rack.
(5) Close the DME circuit-breaker.
(6) Do a test of the DME. Refer to Paragraph 5.
3. Remove/Install the Remote DME Switch
A. Remove the Remote DME Switch
Detail Steps/Work Items Key Items/References
(1) Remove the instrument panel cover. Refer to Section 25-10.
(2) Open soldered connections on the rear of the remote DME switch.
(3) Remove the screws which attach the remote DME switch to the panel. Hold the switch!
(4) Remove the remote DME switch from the panel.
B. Install the Remote DME Switch
Detail Steps/Work Items Key Items/References
(1) Put the remote DME switch in position in the panel.
(2) Install the screws which attach the remote DME switch to the panel.
(3) Establish the soldered connections on the rear of the remote DME switch.
(4) Install the instrument panel cover. Refer to Section 25-10.
(5) Do a test of the DME. Refer to Paragraph 5.
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4. Remove/Install the DME Antenna
A. Remove the DME Antenna
Detail Steps/Work Items Key Items/References
(1) Remove the co-pilot's seat. Refer to Section 25-10.
(2) Release the co-axial connector from the antenna.
(3) Release the screws which hold the antenna.
(4) Carefully pull the antenna clear of the fuselage and hold it. If necessary, carefully cut the sealant around the base of the antenna. You must not damage the fuselage skin.
(5) Move the antenna clear of the airplane.
B. Install the DME Antenna
Detail Steps/Work Items Key Items/References
(1) Carefully remove any sealant from the area where the antenna attaches to the fuselage.
(2) Clean the area where the antenna attaches to the fuselage.
(3) Put the antenna in position under the fuselage.
(4) Attach the antenna with the screws.
(5) Connect the co-axial connector to the antenna.
(6) Seal the outer edge of the antenna to the fuselage skin with sealant. Use Dow Corning 732 RTV.
(7) Install the co-pilot's seat. Refer to Section 25-10.
(8) Do a test of the DME. Refer to Paragraph 5.
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5. Test the DME
DA 40 Series
Detail Steps/Work Items Key Items/References
(1) Switch the DME ON: S Set the master switch ON. S Set the avionics master switch ON. S Set the ON-OFF switch on the DME receiver to ON. The DME display must light.
(2) Make sure that the DME receiver is tuned to a useable DME station.
(3) Do a test of each control function. Refer to this Section.
(4) Do a test of the DME remote channeling.
(5) Switch the DME OFF: S Set the ON-OFF switch on the DME receiver to OFF. S Set the avionics master switch OFF. S Set the master switch OFF.
