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Front Bumper

JimC2

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Location
Collierville TN
I finally got that ugly front bumper off the truck.
Gotta bring a winch style lower grill in from the hangar before I install the winch bumperettes. Removing rusted 70 year old bolts was a chore.
20251018_151416.jpg
 

JimC2

Active member
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Location
Collierville TN
About fifty years ago we needed to relocate the truck across the storage yard (I wasn't there).
So one of my friends torched a couple of holes in the frame and stuck a big U-bolt in to attach the towbar.
It's always kind of bothered me and now that I'm refurbishing the truck, I'm going to repair the rear hole because it is structural.
However, the front hole isn't and my friend went west way early, so I'm thinking about leaving that front hole as a historical tribute to him (it isn't structural and can't be seen when the winch and bumperettes are on the truck).

I'm dithering - what would you all do ?
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JimC2

Active member
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Location
Collierville TN
"However, the front hole isn't and my friend went west way early, so I'm thinking about leaving that front hole as a historical tribute to him (it isn't structural and can't be seen when the winch and bumperettes are on the truck)."

Sometimes I stick my foot in my mouth. The frame extension rails for the winch slipped my mind. I do have to repair that front hole. But I did get a test fit on the winch bumperettes done today.
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JimC2

Active member
173
132
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Location
Collierville TN
The dent in the front of the passenger side of the hood and the fender dents are really bugging me. They aren't particularly important, but I think I'm going to fix them next because I'm tired of looking at them.
 

ab705

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Location
Maine
I'm dithering - what would you all do ?
20251018_151239.jpg
Considering the location of the holes and their intended purpose, I would just weld them up, grind them flat, and re-drill them. If you place a temporary copper backing plate under the holes while welding them, it can help prevent dripping/dropout/burn-through, so less grinding to do on the underside. If you're pretty handy with a MIG, you can get by without the copper backing plate while welding them up.

If the holes were in a more critical location on the frame I would consider the same approach, but might also weld on an appropriately shaped reinforcing gusset before re-drilling the holes.
 

JimC2

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Location
Collierville TN
They ARE in a critical location - very critical - the cast reinforcing bracket that attaches to them also attaches to and registers with two holes on the side of the frame that go through two pieces of steel and one of cast iron. A friend will be doing the welding. Good idea about the copper plate. Thanks.
 
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JimC2

Active member
173
132
43
Location
Collierville TN
I'm expecting to get the back rims from the sandblaster Tuesday. Will probably take the rest of the week to prep and paint the rims and let the paint cure before mounting the tires - hopefully sometime week after next.
What is the best way physically to prep and paint the back side of the red and amber reflector mounts? They are welded on.
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JimC2

Active member
173
132
43
Location
Collierville TN
I'm glad I like this truck - because it sure is a pain in the nether regions...
My 37 is a lot lighter, and it was anemic until I put the big block Chevy in it. I can't shake the urge to do a similar completely reversible installation of a Dodge 360 Magnum bored 0.040 over and stroked to 4 inches for 410 c.i. in this truck. It would be smaller and lighter than the Chevy and almost as powerful. The NP420 has to be retained in its original position in order to power both the dump bed and the winch. That can be accomplished by using a civilian pilot shaft and housing together with a hydraulic clutch and an early slant six manual bellhousing - I've done that before with a 318 LA in my 37 before I switched to the Chevy.
 
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ab705

Active member
74
207
33
Location
Maine
They ARE in a critical location - very critical - the cast reinforcing bracket that attaches to them also attaches to and registers with two holes on the side of the frame that go through two pieces of steel and one of cast iron. A friend will be doing the welding. Good idea about the copper plate. Thanks.
I suppose 'critical' is a relative term. I'm not saying that hole location isn't important. Let's just say that there are other places on the frame where the stresses would be very different, and I would consider using a reinforcing gusset, but I don't think you need any extra reinforcement at that location for a simple hole repair.

Also, on winch models (assuming that you have all of the winch-related parts, including the frame extensions), IF memory serves me right (correct me if I'm wrong), the top flange of the frame rail is sandwiched between the winch-to-frame bracket (FSN 2540-770-5772) and the frame side rail extension (FSN 2510-508-1086/1087). These would not only impart great strength to the top flange of the frame rail in terms of resistance to bending or to buckling under a compressive load, but they would also prevent the use of a gusset because it wouldn't fit. In a sense, they would serve more or less the same function as a heavy-duty gusset.

I think you'd be fine just welding up the enlarged holes and re-drilling them.
 
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JimC2

Active member
173
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Location
Collierville TN
You are correct, with the possible exception that the two important loads are shear on the frame at the bolt holes and shear in the five bolts that pass through the cast brace. Right now, the shear loads created by the driver's side of the winch are being carried by only two of the five bolts that pass through the frame on the driver's side.
I do have all the parts and the setup is identical to the one on my 37 with the exceptions that the 708 PTO has an output shaft both front and rear (the rear jackshaft that goes from the PTO to the hydraulic pump is bent and will have to be replaced), and the front LU-4 winch pinion housing on the 37 has been reinforced in the field by a 1/4" steel collar to help resist shear and bending loads in the aluminum housing flange that are created by the pinion shaft (the original housing flanges on the 37 winch were destroyed by the pinion shaft shoving forward on the front of the housing under heavy load).
 
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