Ever since I got my car, the sunroof would only go back a little more than half way open before it would get stuck. With a little pull, I could get it started moving closed, and then it would close OK.

I figured it just need lubricating, so I bought some spray on white grease, and with the switch got it to go back as it could this time about 3/4 open. I then tried to open it the rest of the way by using the hex nut on the sunroof motor (per owner's manual). I couldn't get the hex nut to turn one way or the other more than about one revolution.

I then tried closing it using the switch, and it wouldn't move. I grabbed it with one hand and got it moving close. Got to about 3/4 close and stops. Will not move any further close. With the switch, I can get to open about 1/2 way, and will close to about 3/4 then it stops. To make matters worse, I broke the plastic hex-nut on the sunroof motor.

Questions:
1> How much force does it normally take to open and close the roof with the hex-nut?

2> What can I do to get my sunroof closed.

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1989 300E
103,500 miles

1982 300SD
Sold but not forgotten