Re: Flapper Valve Adjustment for Ventilation System

Posted by HH56 On 2011/10/14 8:55:20

You should be able to move the entire cable at one end or the other--depending on which side has the most room.

Move the lever to the heat or off position and then loosen the screw holding the cable clamp at the flapper end. Slide the entire cable in the clamp until the flapper is totally in position and retighten. It might take a try or two to check and move the lever again if it didn't go to stop the first time. If there is not enough room to move cable without running the housing out of the clamp, loosen the other end and slide the housing slightly on the wire to provide a bit more area. If doing that, be careful not to restrict the approx 1 1/2 inch of total travel.

If that adjustment looks OK, also look at the flapper rubber. Sometimes old rubber cracks & breaks off or takes a set & warps so air passes. The rubber piece can be replaced either with newly made ones from Steele or just plain sheet rubber cut to pattern.

EDIT: I don't remember if your model Clipper has the two 51-3 dual function levers or the four 54-6 separate function levers----While there is a difference in lever mechanisms, a procedure is given for adjusting the 51 dual function lever setup. The basics & explanation for some low heat problems are applicable to later ones as well.packardinfo.com/xoops/html/downloads/SC/SC-VOL25NO2.pdf