Search results

Some voltages to remember: 12.6 volts means the battery is fully charged. 13.6-14.5 volts is the ideal range for an alternator charging. When cranking the voltage should maintain ~10.5 volts. Double these numbers for 24v systems. Your battery raises a red flag because it's showing 12.6...

The drop from 12.6 to 11.8 volts when you cycle the key on indicates that battery is bad.

They take compression set and you can't retorque them with the fuel lines installed. They will leak. Also, the rails on the valve cover are too flimsy to properly seal on a gasket. These engines came from the factory with silicone sealant on the oil pan and valve covers. The timing cover uses...

Quick get those valve cover gaskets out and toss them in the garbage before you regret it.

I strongly disagree with the above post. Do not pressurize your fuel tank. The 92 series engines have unit injectors fed by a large gear pump. They don't have long high pressure fuel lines to trap air. The self-prime very well. The gear pump will also block flow from the tank when the engine is...

Use a bushing or 3 to get you to a NPT size that has a -5 AN adapter available.

The unit injector Detroit Diesel engines are very good at self priming. I might be known for installing empty filters on an engine, starting it, letting it run to 1200 rpm, let the air bubble hit, and use the inertia of the generator set keep it going until the filters prime.

The hot products today are low viscosity, penetrating epoxy primers. International Pre-Prime 167 is an example but all of the big manufacturers have their own version. These are a pain to work with, they run everywhere and the recoat windows are narrow but they do work very well for marginally...

The block heater will certainly make it easier to start. I would do the plate style, get the heat where it needs to be in the head. There are also silicone heater pads that you can stick to the oil pan. It won't help with starting much because the oil is so far from the block but it will help...

I agree. Flood the block at a minimum.

The weakness of the 71 series are the dry fit liners. They frett and wear out the block. If you let this progress too long the block has to be bored for oversized liners which kills the ability to in-frame the engine.

The tires don't hold up well at all. Nothing else deteriorates with time.

Nobody is being helpful and I won't be either. The CUCV models use Packard connectors but the HMMWV does appear different from your picture.

Small generator sets typically have speed droop type governors. This means your power frequency may vary from 60-63 Hz. This is going to piss off your UPS power supplies unless you have industrial units. Generators with isochronous governors can maintain 60hz but are rare on small gen sets...

There is too much folklore around the Detroit engines. People think they'll run forever without maintenance but the truth is that they'll run until they die catastrophically. With our experience the 71 series generator sets got a major overhaul interval of 24k hours. The John Deere engines get...

Ether is mandatory to start Detroit 2-strokes in cold weather. They don't have glow plugs or grid heaters. Go ahead, do your worst. Detroits have unit injectors and are fed by a voluminous gear pump. They self prime quite well.

The engines had a fixed fuel rack so if you got a stuck injector because of water in the fuel the governor couldn't bring the injectors back to the shutdown position. The remaining injectors would be stuck at that power setting. If you removed the load or declutched the engine would overspeed...

I wouldn't say the smaller sets inherently use less fuel. I recently downgraded the generator sets in my fleet from 8.1 liter John Deere engines to 4.5 liter JD units. The capital cost was the primary driver behind the decision. Our sets spend most of their lives running at 10kW so the 150+kW...

The shutdown air damper does not close during a normal shutdown. It's usually connected to an overspeed trip or emergency shutdown.

White smoke like that means the engine is fueling. IF you have a shutdown damper it's in the blower inlet duct. You can see the shaft in this picture from eBay This link has the rest of the pictures that show the shaft, damper flap, and catch mechanism...