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Removing potentiometer 1. Loosen the two fastening screws -arrow- and remove the potentiometer. 2. Unclip the potentiometer lines downwards and disconnect the electric plug connection (connection point X 26). 3. Carefully remove insulating tape from the potentiometer to the plug connection without damaging any other wires. Expose the potentiometer lines (green, yellow and red). Unlocking secondary locking of the plug connection 4. Unlock both sides by inserting a small screwdriver and shift in the direction of the arrow. The figure shows the secondary locking unlocked. 5. Release old contacts of the potentiometer lines with the unlocking tool Press-out and unlocking tools for flat and round plug connections of every size NR.155 Installing potentiometer Installing potentiometer 1. Install and lock new contacts of the potentiometer lines. To do this, compare the assignment with the wiring diagram. 1.1. Install the new contacts of the potentiometer in the same position as follows: 1.2. Green wire (pin 1) to pin 9 1.3. Yellow wire (pin 2) to pin 4 1.4. Red wire (pin 3) to pin 8 Diagnostic system: reading out fault memory and activating systems Removing potentiometer 2281 |