1984 308 QV Headlight Lifting Issue

I don’t have any experience with this car, but I would expect there would be an adjusting screw that acts as a stop for the headlight housing in the up position.

 

The motor maxs out ,,
At the Top-Correct position.


Seems like you might have a wiring issue,, motor ( sensor) spinning the wrong way. ??
kinda weird.

 

There are two ,,, resting ,,, rubber bumpers at max open. but,,
You seem to have a , “lazy eye.”

hope I’m helping.
good luck.

 

If it's like the 400, motor rotates in a single direction: half a turn is up, an additional half turn is down. If the track in the motor disc is dirty, maybe that is does not properly sense the up position.

From memory the arm that is attached to the motor axle has a spline-line that allows to adjust the positioning.

 

Not sure about the proper english, but the output shaft "spline" allows to adjust the rotating arm position.

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Next step is to open the motor and clean the tracks on the back of the crown gear (brownish disc in the photo). The old grease makes the tracks non conductive. On the gear cover you will see some fingers that slide over the track. These are the "position sensors". Attached to these fingers are the diodes that reportedly go bad (next to the green grey cables).

That's an easy job, the only issue is to remove the rubber boot (if your motor still has it, mine is on the left of the photo)
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If the headlight goes up to far it must also not come down enough. The mechanism work like the image below. Then raised the arm is fully extended. It can't get any higher. When lowered it is fully retracted. It can't get any lower. The difference between raised and lowered is fixed. Check to see if the position of the arm on the motor and linkage to the head light are as pictured below. It's impossible for the headlight to be in the correct position when down and too far up at the same time if everything is installed correctly.

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Slight correction to the figure above.

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Here is what the linkage should look like when the headlight is down. The arm on the motor should be inline with the linkage to the headlight. Both pointing in the same direction.

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When the headlight is up it should look like this. Again, both in a straight line (or very close to it).

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The only way for the headlight to be too high is if the adjustment linkage it too long, even if the motor didn't stop at the correct "up" position. This would also result in the headlight being above the fender level when retracted. Additionally, if the motor didn't stop in the correct "up" position then the adjustment to the adjustable link to make it right would always be too long for the headlight to match the fender level when down, no matter where the motor stopped when lights are down.

Now, if the motor doesn't stop at the correct "down" position it would require shortening the adjustment link to be at the proper fender level. This would cause the headlight to be too low when up, no matter where the motor stopped with lights up.