Re: Flapper Valve Adjustment for Ventilation System

Posted by BigKev On 2011/10/14 10:10:06

I found the flapper rubber on my '54 was petrified and pieces of it had broken off. One of the PI Chapters sells the replacement flapper rubber as well. I think I have pictures on my blog of me replacing the rubber in mine. It makes a world of difference when they seal correctly.

Just a note this will take a couple of hours to replace as you have to remove the sections of ducting where the flappers are located, and then remove the flappers themselves, and then remove all the staples that hold the two halves of each flapper together.

I was able to careful pry up the legs of all the staples so I could pull them out and reuse them. I always have this vision of some guy at the factory with a huge comical oversized Swingline stapler assembling these back in the day.