Before I weld these up, are these just random PO installed holes or are they significant? I already welded necessary holes I had to drill back out. Trying to avoid a repeat. Passenger floor.
More Hole ID help (1 Viewer)
- Thread starter h82crash
- Start date
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mattressking
10 digits to freedom
My 3/78 truck only has the circled one below, however I see you have a '74 so I can't verify for your year. I checked some diagrams and didn't see plugs for that location. I checked for my truck and it shows the single plug at that location which is 90950-01006
I don't know what they are for, but I have the same 2 holes in my 74.
I don't know what they are for, but I have the same 2 holes in my 74.
- Thread starter
- #5
TKS, any reason not to weld them up?
Malleus
Far west of Siegen
They're probably what the OEMs call "tooling holes". The fixtures that are used to align the various pieces on the offline tooling adjacent to the assembly lines need to be able to orient the separate pieces of assemblies so that the line personnel don't have to measure anything when they're assembling. The individual pieces of assemblies rest on pins on the fixtures so the assembly personnel don't have to hold them individually. The size of the tooling holes is directly related to how much variability the engineers build into the part relationships when they design the assemblies.
If there are plugs available why not use them? Makes less work for you.
If there are plugs available why not use them? Makes less work for you.
- Thread starter
- #7
Thanks a bunch. The info is both interesting and helpful. I'm welding several dozen PO installed holes and maybe 10 or so unnecessary factory holes in the firewall. Tub is completely stripped so, now is the time to do it.
