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"I rebuilt an LDS, new rings and all...and it also has a bit of blowby. Go figure." I'm glad that thing is still running for you. I remember when you did that overhaul and we were all worried because it still had blowby.😄

Does it have buckles or straps along the front edge? It would be easier to help if we had a picture of this thing laying out. Another wild guess would be a cab cover for an M16 Halftrack.

Check torque on all your exhaust manifold and turbo fasteners, and inspect the back of the turbo outlet elbow for pinholes. Inspect exhaust manifold for small cracks as well. Hopefully you find something there that is an easy fix.

Run whatever you want for engine oil. You aren't going to get more than 100k miles out of it before it needs major overhaul anyway. A zinc additive absolutely does help though. It's not just a wear thing, but you'll also notice the engine just runs better, pulls harder, and gets better fuel...

Not on the corner. You need to hit it directly and squarely on the flats on either side. Shock loading never fails.

Hit the side of the arm right where it meets the knuckle. Hit it hard and repeatedly. Use something like a 32 oz ballpein hammer.

Goes- out- of

Just a guess. Only thing I can think of with an open cab that was wider than a deuce cab at that time. I mean, maybe the Ford 8x8 trucks but I'm not sure they were a thing yet in 1962.

Yes they work good enough. These are what is used inside of tanks and other armored vehicles.

They are stainless single wall tanks.

Clean up your kingpins with fine emery cloth and replace the bushings. They come undersized and usually need to be reamed to fit. Yours will likely fit perfectly with no reaming. Those bearings are fine. They didn't get hot enough to be hurt. Just use good quality grease going back together. All...

I wanted to answer you on there (facebook) seeing all those stupid answers, but I'm on a ban for calling Kamala some choice expletives on one of her official posts, so... The suggestions that it could be fuel filters indicates a complete lack of knowledge on the subject. Your fuel lever...

M548 cab cover.

Not early, late. I'm in South Korea.😄 Even if we could fix the recurring issue I don't think it's worth it anymore. They aren't hard to fix and it also forces people to change o-rings that need to be changed anyway. And I honestly don't think these pumps and engines will be around in vast...

If the plunger isn't sticking at all and the spring isn't weak, there's no reason the button would fall off, even with a failed retainer. The plunger, button, tappet and cam will all be in constant contact, and being as the plunger and button have concave and convex contact surfaces the button...

Nah James, you might be surprised to know I've had quite a few trucks where I've found the button and clip fallen off when I'm just doing hydraulic head o-rings on an otherwise good running truck. I'm inclined to think this is a compound issue of failed button retainers and tolerance stacking...

That was the problem. It didn't need a new head. If you had just reinstalled the button it would've been fine.

This pump is way too small to supply the engine with the fuel it needs under load.

Get on Facebook and contact Jeremy Bellois. He has whole engines, piston and liner sets, overhaul kits, bearings, absolutely everything you could possibly need. The 331 is his specialty.

This^^. Or you could have a worn drive cam or tappet in the pump center section causing a reduced length of plunger stroke. The button or top of tappet could also be worn but that's exceedingly rare.