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I don't know how the pump being larger would make it better. The C9 Cat engines with HEUI did have a recall because one of the bearings in the pump was failing. With regards to axial piston pumps restriction on the case drain or suction can cause shoe lift which destroys the pump. The second...

The John Deere engines are not intended to be checked while running. Engines that are will have a two sided dipstick with running and stopped levels. I do have a 4045 engine in my fleet that pushes oil out of the dipstick if you pull it while running. There is nothing wrong with that engine. Do...

Even without glow plugs the engine should smooth out within a few seconds if you're above 40°F. That engine is making some unhappy sounds but they don't sound like bearings but there is something seriously wrong with the engine. Is it blowing bubbles in the cooling system? Have you done an oil...

I forget if the tube is 1/8" or 3mm. Everything else is metric so it must be, right? 3mm will fit a little tighter.

Look into Donaldson Power Core air filters. There is nothing close in terms of performance and capacity. They have housing available with turbine separators to drop out the bulk of the dust.

Is your blackout switch on?

The aftermarket return lines are the incorrect hose material for the application. They don't tolerate the temperature and you'll get cracks in the ends of the tube. You need to use Viton tubing. If you use Viton tubing you don't actually need the clamps. The OEM lines were Viton...

The most important condition is that there is only one connection between ground and the neutral. It doesn't matter much where this connection occurs, in the panel or generator enclosure. If you're wiring to your house lift the bond in the generator. If your using as a portable only, leave the...

If you disconnect the strap between the solenoid and starter you can energize the solenoid without cranking the engine to verify engagement.

The lower bushing is clearly toast. The upper bushing is likely the same.

Your batteries tested fine.

You should have a Min Hi function with the hold feature. Set it for min and it will record the minimum voltage while hold is active.

Measuring the battery voltage without a load is absolutely meaningless. Usually you use the starter as the load. Since yours is kicking out you don't have much time. Does your meter have a hole function? You can use the hold to capture the lowest voltage. If it dips much below 19 volts your...

This picture is from the internet. The GM flex plates tend to break around the crankshaft flange. I've had one that was 100% separated but still was totally driveable other than an odd clicking sound.

GM engines are known for breaking flex plates.

My stock M1008 scaled at 5400 lbs.

There are acid based flushes that are good for removing the sediments. Coolant corrosion inhibitors are film forming and can't form protective films under existing dirt and corrosion. If the system was dirty it needs to be cleaned.

Unless you're running Caterpillar DEAC there are not a lot of pre-mixed SCA compatible coolants on the market. If you want to filter your coolant I would use a modern coolant type and use just a simple water filter with no boosters. Coolant filters have gone the way of the dodo... They primarily...

Take a look at your head gaskets. Most of the flow in the block goes to the rear and then into the heads where it flows through the heads to the thermostat housing. The rear of the block will run warmer always because it's further from the water pump. The heads are not as sensitive to the...

Check out a product called Daubert Nox-Rust 121 B. It's supposed to be the self-healing wax coating GM uses on some of their truck frames. I'm in California so I can't tell you how well it works but it looks good and the price isn't bad. It can be applied over other coatings and requires minimal...