Here's the two regulators. First pic is for a 47-50, and the second is for 51-55 trucks.
Both use a similar flat stock spring, but it appears they're a bit different.
The vendors sell the stem and pinion gear with housing for the 47-50 style as a repair, but I don't see a spring that goes in there (the round stock one in your second picture?) or one like that for either style regulator. I've never seen the flat stock spring available. Maybe a member here has an old regulator with a good spring that could fix yours. Post in the swap meet forum your need.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 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.
