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I think I found it. There was a squashed 3/16 x 3/4 roll pin on the ground below the front cover. It must have gotten in between the gears, forcing them apart and breaking the shaft. It must be the one that is pressed into the cover and keeps the governor from rotating. Looking at the support...

The throttle cable was severed from electric current at an area it came into contact around the generator. Molten strands, burned outer covering etc. I found the engine block/chassis ground strap in terrible shape and corrosion in any bolts in the area. I still wonder why that happened. You...

I've seen close tolerance 'elipse internal gear' pumps jammed from debris and expected to see one here but it's a fairly debris tolerant spur gear pump. This is the first I've seen one seized. To make it interesting, I can't find any trace of a chunk or any signs on the internal sufaces. It...

Some pics The oil pan and closeup show random debris. Each of those specks is different, paint chip, crud, aluminum shaving, brass... Nothing scary among them like chunks of steel. The screen strainer is intact, anything going in passes thru it. I cleaned the oil pump parts, other pics are as...

I'm no spring chicken. In fact I existed before this clump of ungrateful scrap by a good score or two, I forget if a score is 10 or 20, my memory aint what it used to be. Even if the oil pump were ancient and worn out, a failure mode of seizing should be near impossible unless a big chunk of...

1100 hours. It's from 1986 and came to me last year through a buyer of govt auctions. It's weathered but everything worked (that would soon change), it didn't leak oil(!) I don't think the oil pressure had a chance to drop, it seized up with the teeth from the oil pump gear sheared off and...

I'll take pics but I don't have it out yet. The front of the engine is apart and pump loose but wont come out. It appears the oil pan has to come off and that also holds the motor mounts so I have to levitate the whole engine. There's nothing in the MEP or Onan manuals I can find about that...

My MEP-003A had been running fine and suddenly shut down from a seized oil pump. The drive gear shed a few teeth and then the pump shaft sheared off at the pump. Is this normal? I can't think of any reasons, It gets proper oil changes and Wix spin on filters and had the last about 10 hrs ago...