What did I find in the bottom of my MEP?

[Toolslinger]

So, while cleaning out the vintage crud in the bottom of the 802a, I came across these two items... I have no idea what they are, and while I'm not really concerned, I'm curious. I simply expect these are remnants from some prior repair that got dropped, or launched, and weren't easily found... That said, I'd take a look at whatever they're part of if I knew what it was.

 

[Ray70]

Looks unrelated to your 802. I don't think I've ever seen anything like that anywhere in an 802 , unless it came from inside the fuel pump or something, that's one place I've never been... I usually pluck em' and chuck em' when they die, never opened one, not that I think you even can open a E1074, but perhaps the old cube pump comes apart??
Either way... chuck it and forget it.

 

[uniquify]

That's not an old thermostat is it?

 

[Light in the Dark]

Springs too thin to be from a busted FSS... plastic unkown. Just trash.

 

[Guyfang]

I am going to guess, the air restriction indicator. But like everyone else has written, trash, toss it.

 

[Light in the Dark]

I once found an intact GI flashlight tucked into the fuel tank area, with panel reattached like nothing had happened.

 

[Guyfang]

I took an ARI, (air restriction indicator) apart in 1973? 1974? when I was bored stiff one night/morning, at 04:00. In the engine compartment, nothing has a spring so small and thin, that I can think of, other than the ARI.

 

[FarmingSmallKubota]

I just bought an 802 parts machine and it came with no lid, 804 parts, needlenose plier from the General Mechanics tool kit and lots of other stuff i have not identified yet.

 

[FarmingSmallKubota]

So, while cleaning out the vintage crud in the bottom of the 802a, I came across these two items... I have no idea what they are, and while I'm not really concerned, I'm curious. I simply expect these are remnants from some prior repair that got dropped, or launched, and weren't easily found... That said, I'd take a look at whatever they're part of if I knew what it was.

View attachment 921265View attachment 921266

Would those have come from the inside of a radiator hose?

 

[Light in the Dark]

No the metal interior spiral is thicker than that material.

 

[Toolslinger]

My first thought was actually ARI. I was in one from my Dodge Ram a couple decades ago, and while I don't recall the specifics, it called up that memory cell. Trash it is.
Do people find them of use on these machines? They never seemed to work well on the Ram.

 

[Guyfang]

I never looked at it. Never. Changed the air filter IAW the LO.

No, thats not quite right. In Ft.Lewis, 1980, after St. Helens popped off, we looked every single day at our gen set ARI. Both on post and at Yakama firing range. Oil, fuel and air filters were changed every 25 hours. And we still lost equipment. That dust was finer than anything short of talcum power. 30 years after I left Washington, I still found dust in my record collection. It ruined all the L.P.'s I took to the states.

 

[Ray70]

I had an uncle living in Oregon when she blew off, he sent us a glass jar full of the ash. It was the finest powder you could imagine. I can only imagine what it did to every mechanical item it found its way into!

 

[Guyfang]

The 9th Inf. Div. was for all intents and purposes, NON-OP. And not just a few weeks.

My contact team at Yakama Firing Range had to turn in all their gear, trucks, test equipment and the whole 9 yards, to have it compleatly overhauled. My NCOIC loved to drink a few beers and tell the tale of what happened. No matter how often I heard the story, I had to sit down and catch my breath. They thought WW3 had started. The Units around them just got in MOP3 and hopped in their trucks and hooked. They left everything they owned behind, including weapons.

 

[2Pbfeet]

https://www.researchgate.net/publication/341335185/figure/fig2/AS:11431281172708838@1688645644324/Ash-from-the-eruption-of-Mount-St-Helens-18-May-1980-The-scanning-electron-microscope.png

It is such an angular glass/silica that it looks like a demon abrasive

I have been told that it aggregates on jet engine blades.

I can't really imagine the scale of the eruption, though I saw pictures at the time, and have been by it since. By geological records for the area, it wasn't even that big. To me geological scale is just a whole different ball game.

Out of curiosity, did any of the equipment have oil bath air filters on their engines? If so, did any of those engines fare any better?

All the best,

Peter

 

[Toolslinger]

I had to work up a system to grind a crystaline compound down to the single digit micron level. It took running it in liquid nitrogen, and then in to a liquid nitrogen cooled hammer mill. I managed to get there, and then sub-micron, but the dust in the exhaust was a nightmare... Since it was just an experimental run, I couldn't spend the cassh to get a crazy removal system... Amazingly, a Dyson vacuum actually managed to clean it up. Granted, I don't think it would have survived all that long, but it worked for the month long trial... When you get down in those sizes, it's just amazing where it gets to, and through.

 

[Guyfang]

It is such an angular glass/silica that it looks like a demon abrasive

I have been told that it aggregates on jet engine blades.

On 24 June 1982, the route was flown by the City of Edinburgh, a Boeing 747-236B registered as G-BDXH. The aircraft flew into a cloud of volcanic ash thrown up by the eruption of Mount Galunggung around 110 miles (180 km) south-east of Jakarta, Indonesia, resulting in the failure of all four engines. Partly because the event occurred at night, obscuring the cloud, the reason for the failure was not immediately apparent to the crew or air traffic control. The aircraft was diverted to Jakarta in the hope that enough engines could be restarted to allow it to land there. The aircraft glided out of the ash cloud, and all engines were restarted (although one failed again soon after), allowing the aircraft to land safely at the Halim Perdanakusuma Airport in Jakarta.

The engines were considered a total loss, and wrote off.

I can't really imagine the scale of the eruption, though I saw pictures at the time, and have been by it since. By geological records for the area, it wasn't even that big. To me geological scale is just a whole different ball game.

Out of curiosity, did any of the equipment have oil bath air filters on their engines? If so, did any of those engines fare any better?

By that day and age, nothing had oil bath anymore. The last gen sets with oil bath that I used/worked on were sent to the bone yard in 1975, or there about. In that environment, oil would have become mud, real fast.

The best air filtration system I ever saw on a gen set was for our 150 KW Patriot Turbine. It used an aircraft style centrifugal filter with about 70 venturi swirl tubes. The air intake volume of the turbine was "Impressive". The velocity of the intake air in the swirl tubes threw dust and foreign matter out to the side of the filter housing, where compressor discharge air ejected it downward out of the set. Sadly, the engine was a P.O.S. It was replaced in the early 90's.

 

[2Pbfeet]

@Guyfang Thanks for the knowledge. I had to go look up vortex tune separators and inertial particle separators. Learn something new every day!

All the best,

2Pbfeet

 

[Guyfang]

Wonderful, simple tech. The M1 tanks use something like it.

 

[2Pbfeet]

Wonderful, simple tech. The M1 tanks use something like it.

I did wonder how the M1 coped with dust.

I came across one for pickups; 16 generators packed into a 3x5" air intake, for use in high dust environments.

https://www.cfte.co.za/wp-content/uploads/elementor/thumbs/ram-filter-ocovjdg1vgichtay55edfnda7i2s3zejqajhon5nso.png

RAM FILTERS - Centrifugal Filtration Technology

RAM FILTERS This pre-filter range is equipped with our CFT 18 mm tube to yield ultra-high pre-filter efficiency in extreme dust conditions due to the axial inlet and outlet flow that minimizes pressure gradient. These pre-filters maintain high efficiency even in variable flow conditions due to...

www.cfte.co.za

Makes a lot of sense to me.

All the best,

2Pbfeet