Super Six Hudsons in 1929 came with at least three different mechanisms to adjust the position of the front seat. On Briggs-build cars (the Town Sedan, Roadster, and 5-Passenger Phaeton, all built on the 122-1/2 inch R chassis) the seat simply slides back and forth on a metal track. It is held in position, and moved, by a threaded shaft that goes through a metal "nut" mounted on a bracket that attaches to the floorboard. This "nut" was made of two piecees of pot metal. Needless to say, it is vulnerable to breakage.
The "nut" on our Town Sedan was broken when we bought the car. After considerable searching, I was able to find a machine shop willing to manufacture a replacement from brass stock. They had to make a special thread-cutting tool to mate with the thread on the shaft -- a 4 TPI square cut thread.
The photos below depict the original pot metal nut, the brass replacement, and the new "nut" installed in the seat mechanism. To replace it, I had to drill out two rivets in order to take apart the bracket that holds the "nut." I replaced them with 1/4-inch machine screws.|
|
|
| The original two-piece pot metal "nut." One of the flanges had broken off, so it was totally unuseable. | |
|
|
|
| The rock-solid brass replacement, machined from a single piece of brass bar stock. | Here's the new brass seat "nut" installed in the front seat adjustment mechanism of our Briggs-body Town Sedan. |
Return to "Repair Tips"