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More than 60% ethylene glycol reduces freeze protection. Pure water is the most efficient heat transfer fluid, if you can keep it from freezing or boiling. Indirect injected diesels tend to behave more like gasoline engines since the fire is mostly in the precombustion chamber. In a direct...

Exactly what I found. The thinner cores are micro-finned, unlike the original. These thin, short fins are far better at giving up heat to air. The replacement core I got for Tim's 1009 included foam to seal the core in the box. But I have not had the time to test it since installing. From...

Those areas rust from the outside in. Rockers rust from water intrusion through the kick panel vents. On grinding welds, heat there is also an issue so don't dwell too long, just a second and let it cool. A wet rag can be used on grinding. Welding should stay dry as any remaining water...

No loose flakes. Wire wheel is perfect. The key with MIG welding is to keep the welds short. No longer than 1/4". Just a series of tack welds. Also, most ER70S6 wire is hard to grind. There are some easier to grind filler wires out there, they aren't ER70S6 rated but made for body work...

For cutting, either an air saw or die grinder with cut off wheels is the best. I've heard Rustoleum red primer is the best, it seems to work great in my experience. POR is good for areas you cannot mechanically prepare (blasting, sanding, wire wheel etc) but I have doubts if the Behr Premium...

And grade 8 too. From the picture posted, one appears to be grade 5 and another is devoid of grade markings. You may be onto something.

How does it work on thin, modern auto body sheet metal? I know regular sand blasting will distort, especially when using larger grit.

EOD trucks used to have red markings. Don't know why. And current EOD vehicles don't have the red bumpers or fenders.

Get some high quality drill bits. Start as centered as you can. I used a 1/4" drive socket which fit into the bolt hole to center a 1/4" bit to make a center depression, then switched to a 1/8" bit to drill the pilot hole. After a bit of hard drilling, it was big enough for a bolt extractor...

It is going to take more than just 4000 PSI and a point nozzle to pull paint off of mine. Works slowly on weathered CARC. Might take me 100 gallons of gasoline to do the entire truck. I'm going to try the sand attachment.

Looks like they twisted off. Metric or SAE? Back in the 1980s, the market was awash in counterfeit fasteners. And the Fastener Quality Act did nothing but muddy the waters even more.

I tried the new pressure washer on the 1031. 3.5 GPM, 4000 PSI but it came with size 4 nozzles so at best, it is getting 3300 PSI. The parts manual lists 3.5 size nozzles so I might need to discuss with the sales staff. Anyhow, the lower pressure worked great at blasting the lichen off the...

The connectors are the weak point of the system. They are brass or some other copper alloy and eventually lose their tension. Dirt can enter, causing higher resistance which causes heat and starts the vicious cycle. The blocks can be taken off the connectors with a small awl, then the dirt...

I was talking about set in the spring over time. What I have seen from worn bushing-springs is set on the springs. Wear will also decrease the spring force. Of course damage to the bushing will also decrease the load plus induce play.

For the final finish, 3M rubbing compound, the liquid type, works great on plastic crystals.

Part numbers are in the -P manuals. IIRC, that would be the -34P manual since rear main seal replacement is not authorized at the unit level. Think of unit level as being wheel bearings, brakes, filters etc. In the -20 TM, there is a chart called the MAC or Maintenance Allocation Chart which...

After looking over the design intent of the upper kingpin joint and considering the age of the truck, I ordered new bushings and springs for my 1031. The reason for the spring is to keep the bushing under limited compression so it won't distort/shatter with excessive load. But when the spring...

But when the stabilizer has a Class III leak and is staining the driveway, replacing it isn't a bad idea. And it had a dead spot with no damping, right at the critical range of travel. I've found the problem with the rotten front spring bushings and will replace ASAP. I've also pulled the...

I pulled the wheels and using a jack under the hub, felt for any play in the upper and lower king pin joints, none found. Lubed every zerk fitting and slapped it back together. Naturally, no spring bushings can be found locally. So off to my go-to source, Rock Auto. $35 for all 4.

Got the old stabilizer out and new one in. The old one had a dead spot in it where there was no damping at all. At the very least, there won't be an oil drip on my driveway now. Just letting it sit for an hour made a 3" oil spot on the driveway. The damper was shot. While under, I noticed...