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| Position the flap lever of the footwell vent -1- down -arrow- (flap closed). |
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| Position the flap lever of the dash panel vent -2- down -arrow- (flap closed). |
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| Position the defrost flap lever -3- in such a way that the defrost flap is fully opened. |
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| Insert arrested control unit -5- into the 3 openings of the housing. |
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| Position the control unit on the housing in such a way that the lever bolts -1- and -2- engage in the relevant slides of the control unit -5-. |
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| Guide the lever bolt -3- in the corresponding opening of the control unit -5-. |

Note | When installing it is possible to view the lever bolt -1- through an inspection hole in the bottom gear wheel. |
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| Lock control unit -5- into position. |
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| Check operation of the control unit. |
| It must be possible to adjust all flaps to their end position in a smooth and easy manner. |
| If the flap adjustment is N.O.K.: |
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| Remove control unit and install again - as described above. |
| If the flap adjustment is O.K.: |
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| Screw control unit (1 Nm). |
| Further installation occurs in reverse order. |
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