Preliminary Work
- If a new control unit has to be installed, the values/coding must be read out using PIWIS Tester II 9818 prior to removing the "old" DME control unit. → WM 247055 REPLACING DME CONTROL UNIT , → WM 247019 REMOVING AND INSTALLING DME CONTROL UNIT .
- Lift up cowl panel cover. → 508719 REMOVING AND INSTALLING COWL PANEL COVER .
- Remove rubber beading in front of the cross panel.
- Unscrew the two fastening screws on the cross panel section at the right and lift up the cross panel section.
→ 508119 REMOVING AND INSTALLING CROSS PANEL (DISASSEMBLING PLENUM PANEL)