Repair - Fantastic Vent Won't Open
We went to the trailer today to replace some stuff that was removed in preparation for replacing the flooring. The storage area had plugged it in so I turned on the vents to pull out the hot air and turned on the AC. The front vent lift motor was turning but the lid wasn't moving. I pulled down on the knob and tried manual. No Go here either.
I dropped the motor assembly to see if the shaft wasn't engaged properly, but it was. The main shaft in the vent was turning freely. I could push up on the lid and it opened right up.
Then I noticed that there was a roll pin that was partially pulled out of the cast housing that the shaft turned in. I lifted the arm that seemed to be what raised the lid to discover that it had a half circle gear on the end. I figured out that the half circle gear was supposed to engage with a worm gear in the housing that the shaft turned and the rotational axis of the circle gear was the roll pin.
I dropped the fan body proper leaving the frame in place to get better access. With a combination of pushing rearward on the lever and wiggling it I got it so I could see the hole in the center of the gear through the side of the housing and maneuvered it as close as I could to aligning in the hole. I then used a pair of channel-lock water pump pliers to squeeze the pin back into the housing.
I checked everything to see that it worked and put it all back together.
I had always wondered if I could drive with the vents open. I think I remember us finishing a days drive and seeing the vent lid partially open when we stopped apparently having forgotten to close it before we left. My theory is that the vibration from the wind wiggled the lid and the arm enough to dislocate the roll pin. To be sure I will not intentionally drive with a vent open again, at least until I get my covers put on.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins