If the 54 cowl vent is the same as the earlier trucks, it's pretty simple. There are two small carriage bolts on each pivot bracket, and another two on the linkage that operates the vent. These are pretty easy to remove or just break off by tightening them. Here's a pic of the pivot brackets when I replaced the shoulder rivets on the pivots. If you need some shoulder rivets if your pivots are seized up I can send you some.
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Cowl vent pivot brackets.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.