Showerthought: That weird trick with the door operator on a 90s Otis actually worked.

Got a call for a car that wouldn't level right, kept bouncing at the floor. The usual checks on the tape and the leveling device came up empty. Out of ideas, I tried something an old-timer mentioned once: I slightly adjusted the spring tension on the door vane cam, just a quarter turn. The bounce was gone and it's been smooth for a week now. Has anyone else had to mess with the vane cam to fix a leveling issue?

4 comments

4 Comments

robin8961mo ago

You actually messed with the vane cam spring? I was always told that was a last resort fix. It's wild that a quarter turn solved a bounce like that.

simonlee1mo ago

My old Ford needed two full turns on the spring.

brooke_foster511mo ago

Yeah, I get why they call it a last resort. On my truck, the bounce was so bad it felt like the whole dash was gonna shake loose. A tiny adjustment made all the difference, but I was sweating the whole time I had the cover off.

craig.parker19d ago

My buddy Greg had a Chevy with a tach needle that would swing almost 500 RPM at idle. He tried everything else first, plugs, wires, the whole deal. He finally got brave and gave that spring a half turn clockwise. The bounce just stopped, like it never happened. He said the silence was almost scary after listening to that flutter for months.