The Stovebolt Site Forums The Shop Area General Truck Talk the nuts and bolts of it all

Ok, so I'm refitting the drivers fender and inner skirt on my 52 3100 and was looking through my factory assembly manual. I get lw, lock washer, nut and bolt etc. But what does pw stand for?

Also should all of the bolt holes pretty much line up? Having a bit of trouble getting the bolt in the top hole for the skirt to cowel?

Thanks
joe

no idea about the 'pw', but yes, everything should line up, make sure you're assembling all the front clip loosely before you tighten anything, allows for pushing pieces around to gain that silly millimeter here and there

Bill

PW is their abbreviation for Plain Washer, in other sheets of the TF manual it's called FW...Flat Washer. Flat washer is correct, plain washer is not. This is an example of lack of standardization in the design/drafting dept. at the time. Mil specs and SAE standardization for hardware was just starting to be developed at war time and that would include nomenclature. (AN960 Washer, Flat.... Approved Feb 1942)

Alignment: Stay loose as Bill says and use a round tapered tool thru all pieces to align, like a bridge worker aligns girder rivet holes. In your case, it will allow some sheet metal pieces to slightly "stretch/buckle/twist" into alignment. The holes are called clearance holes. They are, of course, larger than the bolt. All assemblies, of any kind, have clearance holes to allow for hole location tolerances in each piece and the holes will not really be exactly concentric when bolted. Very normal what you are experiencing. Just jiggle, wobble and shake hard as bolt is inserted. You will discover which bolts want to go in first and which last.

Plain Washer...Flat Washer..learn something every day Thanks!

This is where body bolts come in handy. They are tapered at the end but the thread extends down to the end. It makes it much easier to align things as they go together.

As bartamos posted : PW most likely means Plain Washer (Cadmum plated)

Don't listen to bart. PW stands for phender washer. He's working on a phender, right? (Sorry buddy, I couldn't resist yanking your chain.) I enjoy reading the old manuals, before technical jargon was fully standardized. It gives you a flavor of how differently people talked sixty-some years ago. However it does make it challenging to decipher what they wrote at times.
bart's friend,
Carl

Back in the day, PW meant something different altogether. Carl, you are stretching Cletis' patients! You are being phoolish.

ANSI/ASME B18.22.1 also covers washers. The ANSI standard defines Type A, B & C Plain Washers, no mention of "Flat Washers"

PW and FW are both correct, just depends on which standard they were using for the washers at that time.

http://www.ansi.org/about_ansi/introduction/history.aspx?menuid=1

Back then, they did not have B18.22.1, The name was whatever the drafter wanted to call it. In my manual, pages right opposite each other have the same washer called plain and flat with two different drafters. They don't list the part no. Most of the vendors who sell B18.22.1 call it a flat washer on their websites. Some people give the diameter as how "wide" a circle is. If that's OK, then plain is OK. Just going by what I was taught many years ago by Elmer Sperry's Company, the person who coined the word "Automotive" in "Society of Automotive Engineers", as an early SAE member. Nice, but all trivia. To me "Wide" is incorrect and "Plain" is incorrect. Like "Original" is to others

Lol, thanks for the replies. Gotta love this place, good info and good light hearted ribbing in the process.