Something broke today

[yaycandy]

You know, i didnt see any if very little swarf in there. The black gray metal pudding. May be ok. Change fluid and send it.

 

[yaycandy]

This is why the fluid needs changed regularly

 

[bpd1151]

Yikes!

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[jman1200]

Holly !

 

[kryptto]

Finally got around to taking the ptu apart. I was pretty shocked by my findings. It did sit outside of my garage for alittle bit. Then i moved it inside my garage a little ago. So it was nice out today so i pryed it apart.

This will be a ton of pictures probably, i can put it back together and sell it for 100$ as gently used if anyone want it. Lol jk, but i will keep the bolts. Rest will go to the junk yard.

All i did was replace it and let it sit. Everything is what the car did to it

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Best pictures - horrible issue - best pictures though...

 

[yaycandy]

Best pictures - horrible issue - best pictures though...

Yea i figured id take as many as i could before i scrap it. I haven’t seen pics of one that bad. Got lucky. I heard storys of it shattering like mine and taking out the bellhousing with it. On state police cars

 

[yaycandy]

I have it in my trunk. Took it into work to clean it up in the ultrasonic. We have in house metallurgist. So they have a piece of the drive gear as im curious on the material breakdown and then ill have it rockwell checked. Just for my own knowledge, if it happens again ill get a gear made. But usually the drive gear is softer on passenger vehicles. Usually. Not sure till they are checked. But i think the bearing went and some of the roller bearings did what they wanted to do in there. Blackstone got the oil i had left in it and other than there being metal in there after it went they said the oil was still within spec.

 

[kryptto]

I have it in my trunk. Took it into work to clean it up in the ultrasonic. We have in house metallurgist. So they have a piece of the drive gear as im curious on the material breakdown and then ill have it rockwell checked. Just for my own knowledge, if it happens again ill get a gear made. But usually the drive gear is softer on passenger vehicles. Usually. Not sure till they are checked. But i think the bearing went and some of the roller bearings did what they wanted to do in there. Blackstone got the oil i had left in it and other than there being metal in there after it went they said the oil was still within spec.

Interesting - something my brother in law would do... Pratt Whitney - Rocketdyne

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[Bluezone]

Interesting - something my brother in law would do... Pratt Whitney - Rocketdyne

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I have a second cousin, John Bigboote who works at YoYoDyne.

 

[yaycandy]

Interesting - something my brother in law would do... Pratt Whitney - Rocketdyne

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I work at SKF Aerospace. All government work with Pratt, GE and Rolls Royce. SKF purchased Kaydon Ring and Seal 10 years ago or so and thats what we do in this facility. All Kaydon work with their seals updating to SKF part numbers over time

 

[yaycandy]

We have components on Curiosity and the current rover and parts on James Webb space telescope. Along with the new contract for the next fighter jet fa xx along with the f135 contract

 

[kryptto]

Nice to meet ya Yay - the brother in law worked for Pratt for many years until Rocketdyne merger. He works on pump designs. Anyways I much appreciate the detailed photos of the ever so fragile PTU.

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[kryptto]

Much respect for the work you do. Hats off. When your team engineers a better PTU bearing, let me know

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[yaycandy]

Much respect for the work you do. Hats off. When your team engineers a better PTU bearing, let me know

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Easier to replace the ptu

 

[SM105K]

Nice to meet ya Yay - the brother in law worked for Pratt for many years until Rocketdyne merger. He works on pump designs. Anyways I much appreciate the detailed photos of the ever so fragile PTU.

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The ptu isn't fragile. They don't break because of power. They fail because the "lifetime fluid" cooks and galls the bearings. The bearings sieze and whamo......doesn't matter the gears are made of when that happens.

 

[yaycandy]

The ptu isn't fragile. They don't break because of power. They fail because the "lifetime fluid" cooks and galls the bearings. The bearings sieze and whamo......doesn't matter the gears are made of when that happens.

Yea roller bearing went and the rollers just destroyed everything. Rollers are super hardened after heat treat before they are ground to final size and still the grinders can barely bite into them to get them to size when manufactured. Some of the rollers i have from the ptu have bite marks on them from the gears, thats all. Destroyed the gears with little damage to the rollers.

Should take a really big roller bearing and put wheels on it and enter it into demo derby. It would win.

Skf Hanover manufactured the GE windmill bearings until the moved the production to Georgia in 2017. Each roller was around 120lbs.