My 39 has a machined shaft that the clutch and brake pedals pivot. the pedals have bushings no lub fittings. the bushings and shaft were worn on mine, and the pedal was loose enough to bind on the floor pan. The shaft has a collar with a solid pin holding the pedals from sliding off the end. the bell housing end goes through a cast bracket with 2 bolts holding that to the housing, with a 3rd bolt on the end of the machined shaft. i pulled the floor pans (all) and took the whole asembly as one unit. much easer to figure on the bench. i got new bushings mail order. not as nice as the OE. a machine shop turned a new shaft from 3/4" round stock. you may not need a new shaft if it isnt worn but i would still bet on worn bushings. These parts are hiden on Stuart's diagram. Good luck.

"It ain't a truck if you can't hose out the cab."