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Interesting. Rebuilt Granite City Engineering Depot 1955. Has the Chrysler 230 engine similar to M37 truck. If the engine is full of water the unit is uneconomical to repair. Issues with these ancient generators is the grease in the armature bearing is no longer any good, and getting to that...

The tires on it now are skinny 7.50-20s.

Yes the G506 anf G508 rims are different than later M series trucks. It’s important to hoard those rims if you plan to restore these trucks.

What is your serial number and body number?

Waste of money. Wet paint it with Sherwin Williams Kem Lustral F65 B50 wrought iron black. It will look factory.

Red River Parts and Equipment has these. It’s very expensive to rebuild these engines, which is why most everyone opts for good running take outs.

Yup you will need to figure out why the smaller gauge wire attached to the starter is remaining hot.

Suggest you take careful inside micrometer measurements 360 around the inside of the bearing with the cap torqued. Might need a tiny bit shaved off where the halves meet.

Unplug the relay and see what happens. If your cranking stops, the new relay is wrong or defective.

That’s only 0.0035” difference. We are talking GM here. There is some crush when you torque down the caps. If you are worried about the final bearing clearance, do a Plastigage check.

Somebody wanted this WAY MORE than me. Sold for $13,000 today. 24 year old truck that needs thousands more in repairs. I must be missing something.

Air up, chock the tires, cut the engine, get momma to hit the brakes while you go sleuthin underneath. Will be very audible.

Look for a broken off wire in the battery box area.

Oh that is the solvent stuff, thought that was no longer in use. See attached PDS.

Look for an X stamped in the ends of the front axle spindles, if there is none, it will likely snap off and then the wheel falls off.

Been there got the tshirt. Backing into a 172 trailer, dollied up and took off, only to see the trailer flop down like a dead fish. Well suffice it to say the landing legs on 172s are not capable of lifting the trailer, only supporting it. So it was hours with bottle jacks and cribbing to get...

If you ruin it, they are available at heavy truck parts houses.

Welcome. The only place that these numbers will be is under coats of paint on your hood and bumpers. If your truck has been sandblasted, they are lost. Sand carefully to find them. You might find several iterations of these numbers as trucks were repainted often.

I've been using this as a CARC substitute forever now, holds up well in the weather. Super flat black, available at any SW store.

Mil 270s are different from civilian engines with these added features: PCV valve and vent line from the top of valve cover. Steam tube on the head which has something to do with water flow at severe operating angles Oil pan on mid 42 and later trucks have the second lower oil pan, again to...