247019 Removing and installing DME control unit

WM 247019 Removing and installing DME control unit

Tools





Technical values





Preliminary work

Preliminary work for DME control unit

1. If a new control unit has to be installed, the values/coding must be read out using the 2nd generation PIWIS Tester 9818 prior to removing the "old" DME control unit. -> 247055 Replacing DME control unit 247055 Replacing DME control unit, -> 247019 Removing and installing DME control unit - section on "Reading out".
2. Lift up cowl panel cover. -> 508719 Removing and installing cowl panel cover - section on "Removing" Service and Repair.
3. Remove rubber beading in front of the cross panel.
4. 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) Service and Repair

Removing DME control unit

NOTICE

Voltage peaks

- Risk of damage to load or to the control unit

-> Remove the ignition key and switch off load before disconnecting or removing load.





Installation position

1. Unscrew the two fastening screws -1-.





Removing control unit holder

2. Loosen the fastening nut -2-.
3. Pull the holder forward in direction of travel and lift it up and out.
4. Release the latch on both connectors -1, 2- ( -a- ) and pull the two connectors off the DME control unit.





Releasing connectors

5. Unscrew the six fastening screws -3- on the holder and remove the holder from the DME control unit.





Removing holder

Installing DME control unit

1. Position the holder on the DME control unit and secure it with the fastening screws -3-.





Securing control unit holder

2. Plug in both connectors -1, 2- on the DME control unit and close the latch -a-.





Plugging in connectors

3. Secure DME control unit and holder.
3.1. Position the DME control unit and holder and secure with the fastening nut -2- and the two fastening screws -1-.=> Tightening torque: 9.7 Nm (7.5 ftlb.) => Tightening torque: 9.7 Nm (7.5 ftlb.)





Securing DME control unit and holder

Subsequent work

Subsequent work on DME control unit

1. If the control unit was replaced, the "new" control unit must be adapted to suit the vehicle using the 2nd generation PIWIS Tester 9818. -> 247055 Replacing DME control unit 247055 Replacing DME control unit.
2. Position the cross panel at the right and secure the section with the two fastening screws. -> 508119 Removing and installing cross panel (disassembling plenum panel) - section on "Installing" Service and Repair.
3. Install cowl panel cover. -> 508719 Removing and installing cowl panel cover - section on "Installing" Service and Repair.