[Shiny]

Another rat-hole that I find interesting from a design/manufacturing perspective.

I started re-assembling my rear bumper and found a mismatch with the assembly drawing.

I have this reprint:



It shows the same PN 9428940 for parts 4 and 19. These are 7/16-14 dog point bolts.

Of interest to me is my car was assembled with two different bolt lengths, so obviously not the same PN as shown on the drawing.

Looking at the drawing, parts 4 and 19 both have revision notes. Unfortunately, I cannot read the notes on my crappy reprint.

Here's the two lengths on my car. One is 7/8, the other 1-1/4 from head to end of thread.



My speculation:

The factory and/or purchasing realized both locations could use the longer bolts without issue so they consolidated to simplify and revised the drawing. If true, then my car probably was assembled before all stock of the "shorter" bolts had been consumed. I would also guess the longer lengths were originally used between the brackets and the body (19) and the shorter between bumper and brackets (4).

This kind of stuff must drive you guys crazy if trying to accurately/concours restore a car.

Mike