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Keeping 120psi in the system causes no extra wear and tear on anything, but pumping it up from zero to 120psi certainly does increase the wear and tear on your compressor. However, I truly doubt that either starting point will make a noticeable difference in how long the air parts last...

Hi Paul, This whole thread is nothing but slips of paper really... both sides of the argument. Just to add some spice, let me add some anecdotes that I lived through... not the active participant, but his helper. To set the stage: My dad had an IH truck that had a Borg Warner 3 speed...

You're welcome! This fix-it obsession of mine is just part of what happens to you when you were taught how to live by a father that grew up on a farm in Wisconsin during the Great Depression. I sometimes wish I could just toss and replace, but I can't do that without feeling very guilty. -Chuck

They put the oil canisters upside down and above the oil sump level against Hercules's recommendation, they used bobble head valves on gear boxes, transmissions, and differentials, without providing a means for equalizing pressure after cool down. The Army does lots of things that are dumb in...

Hi Bjorn, I was looking on ebay, and noticed a guy selling pop testers built from little hydraulic jacks. Then I did a google search on fuel injector pop testers, and found this link: How to build a diesel injector pop tester - PeachParts Mercedes ShopForum This guy shows how he made a pop...

Hi Tom, I'm near Frederick. I am certain that a manual tester could easily overcome the pressure valve in the injectors, but I wonder if it could achieve the operating pressure of the MF injector when using the thicker oils?... or the operating volume necessary when using the thinner gasoline...

Hi Tom, No, I have never put an MF injector on a tester. I have been looking for a manual test pump with my name on it, but have not found it yet. Got a spare? As I understand it, the MF injector has multiple personalities: Thick fuels will atomize because you are pushing large molecules...

MF engines don't atomize the fuel. They squirt a stream of fuel into the combustion chamber formed in the piston top. The fuel boils and splashes up into the hot air, and burns slowly. That is why the MF engine is called a Whisper Diesel engine. Keep your engine speed down, and you will...

Casual observation shows that the government has been moving steadily to simplify its supply chain for years. At one point, there were multiple fuels (mogas, diesel, jp), multiple engine oils, multiple gear oils, multiple greases, and multiple brake fluids. Now there is one diesel type fuel...

Let's not get too anal here Paul, I said SAE50 motor oil, not SAE50 maple syrup. The synchronizers are clutches, and rely on the oil making them have a certain amount of friction, for their operation. If you use an oil that is too slippery, the synchronizers will not spin up the gear clusters...

The simplest bit of information that should sway you if anything will is that Spicer, the maker of the transmission, says not to use oils with EP additives in their transmissions. GL5/MT1 is full of EP additives. Spicer specifically recommends using SAE50 motor oil. SAE50 is the same...

If you have steel chips in your oil, you have a problem far greater than a magnetic drain plug can cure. -Chuck

Virtually all automotive "generators" built after about 1963 are really alternators. All automotive alternators traditionally have had field brushes. The distinguishing difference between a generator and an alternator is a generator natively puts out DC, and an alternator natively puts out AC...

Licensing bicycles? I thought you guys were tired of regulations that were put into place specifically to harass one class,or another of vehicle owner. A far better tactic, in my opinion, is to eliminate excess and un-needed regulation. Start with the WIDOT MV ban. You have very limited...

This type of resistor is a coiled nichrome wire element, and the heat is drawn away from the element by a ground up ceramic substance.... the chalky substance you saw inside. They are very sturdy, but if any moisture wicks its way through the seals, they will blow the end off of the aluminum...

I can't say that I am familiar with that valve. I don't believe I have ever seen one on a master cylinder. If there is one on the deuce, it could also be the source of the air getting into the wheel cylinders. -Chuck

I have read that article, and it only applies to trucks that have a copper vent tube where the bobble head vent would go. The tube joins with the fuel tank vent, and ends up in the air cleaner. Because the vent tube is large, and is open at the air cleaner end, it would not be able to put any...

Given that I cannot create 5 psi by puffing with my cheeks, and I can overcome the spring on a properly working bobble head check valve, I think you, or they, forgot to put a "0." in front of that 5. Also, that 5 ( or 0.5? ) psi has to come from somewhere.... It isn't going to magically appear...

Sorry, no. The atmospheric pressure is 14.7 psi, but it presses equally on everything in the atmosphere. It presses on the inside of a vented master cylinder with 14.7 psi, and it presses on the outside of the master cylinder with 14.7 psi. The pressure differential across the pistons, etc...

Aluminum has been used successfully with cast iron for decades. It is definitely a good thing. I am fully in favor of using aluminum in this application. ... however.... I don't think paper/fiber gaskets are necessarily a good idea. And I do think that if they are used, some consideration...