I'm new here, and working on my first 235. During the process of tearing the engine apart I hear something hit the shop floor. I look down and find the little metal thing pictured in the attached images. What is it? Where does it go?
What part of the engine were you working on when it fell? That might give you a clue.
Save a life, adopt a senior shelter pet. The three main causes of blindness: Cataracts, Politics, Religion. Name your dog Naked so you can walk Naked in the park.
It appears to be some type of tab for locking something in place. On the backside edge there are remnants of where it pivoted and the male protruding pin would have locked into something indented, somewhere lol.
I'm picturing stamped sheetmetal parts - like a tall oil cap 1/4 turn locking into position, part of a baffle or brace in stamped rocker covers, heat stove pipes, air cleaner base, fan shroud.
It's likey NOT a mechanical part. You will know what it is when you need it and get further along with your cleaning...
That does look like a piece that would be in the crankcase and a wear well lubed wear mark on it. Good eye GIM! (Short for “gmc-is-me”)
Don
Last edited by 2-Ton; 01/16/202110:04 PM.
1967 GMC 9500 Fire Ladder Truck "The Flag Pole" In the Stovebolt Gallery 1946 2-Ton grain truck 1946 3/4-ton pickup, 1953 1-ton pickup 1957 1-ton flatbed dually, 1954 Pontiac Straight Eight Of all the things I've lost in my life, I miss my mind the most!
I have torn down a number of 235s and 216s down to bare bones for rebuilding and have never seen anything close to that part. Maybe someone was cleaning that part up on a bench mounted wire wheel and slung that part into never-never land.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
As Kevinski and gmc' said, its the rubbing block off a newer replacement fuel pump actuator arm (first image, AC 4666, non-glass bowl). The original pumps had a different style, laminated pump arm, that doesn't include that piece (second image, AC 9797, glass bowl). Both pumps shown in the images are NOS units.
Apparently, the pad from a pump used on your engine separated from the fuel pump actuator and dropped into the crankcase at some point in time.
