I have to say I'm a little surprised. All I can say is how long you been a master mechanic.? Or was it you just picked up on the Suttle little clues.? USMC60 I will say though I generally don't give out clues on the first question I asked. Because that information is not widely known or printed up in automotive weekly. I used to get a kick up in Seattle because Kenworth has a factory there. And has a lot of master diesel mechanics. So far I haven't found a one that could answer the question. The second question all you had to look up locksmiths favorite dry lubricant. That answered just jumps up and slap you upside the head. I had to give the young man a fight chance.
GD you seem to be the man that knows it. All I know when I went through the tour at the Denver mint. The tour guide made it especially known that the production room was a clean room. And all employees must wear hairnets and gloves that go into the production room. No cigarettes beverages or anything else is allowed in the production room. Jokingly she said you could actually eat off the floors they are so clean. So GD in your vast knowledge again where does the grease come from. Personally like I've been saying grease is no longer in the equation. Debris and airborne contaminants that come down the line causes any clogged die you do not have to have a liquid base.Actually there's enough moisture in the air to cause contaminants to coagulate.In the only signs a lubricant on thousands of coins that I have examine is the dry cleaning solution that didn't thoroughly get cleaned off in the wash before going to the dryer. And I will concede maybe the Dried wash solution could be the cause of debris to coagulate. And GD I'm sure you know plenty of people that could verify this. But as an individual who is familiar with machine operations I visually do not see any possible means of any kind of (grease) from the dryer to the press. If I could see it I would agree I don't see it so I cannot agree on the word (Greece) like I said GD you're the man that knows so you would know who to contact to find out if there is any grease used on the production floor.Just a simple question for you how many times do you grease a steering wheel shaft in your automobile or truck? I'm going to say none because that's a maintenance free bearing on your shaft. The same that is used in a lot of equipment at the mint's production line. Not everything requires (grease) USMC60
No not the pilot. 3rd seat aircrewman aboard the A3D also affectionately called "All 3 Dead". Cats & traps aboard the aircraft carriers.......best roller coaster ride on the planet.
Did you read this USMC60? Machines fail during operation. Because of this, grease, oil or fluids get on the dies. The mess gets cleaned up after many coins have passed by the press.
Do you know the exact type of press used today? "Schuler" rings a bell, but I'm unsure of if it is known exactly what model or if Schuler is indeed correct.
Second question yes. And that's because the young man suggested he ran his own shop and that would probably be used in his shop. It would be very hard for anyone to answer the question about NASA's shuttle crawler. Unless you actually worked in the field. Like I had mentioned not too many people are aware of the problems that they've had for so many years on the crawler. I thought I'd mention that Teflon seals on the hydraulic ram do fail. I plainly admitted that and that was a catastrophic failure of the seal which I have seen many times over the years. And it's a real Bich when you're standing by it And it goes because you get soaked. And I believe I'm the one that shows a photo of where the failure can occur. Never said it couldn't happen.And I'm sure quite a few coins made it by before the press was shut down. And I'm sure the mint didn't go through and pick out all the hydraulic Lubricated coins that were in the been either.I'm sure at the speeds that the press is run at. The operators have to it's just change the seals on a regular basis. I have no problems admitting that it is a fluid that can coagulate debris there's no question in my mind about that. But how many press failures do you read about.
I don't know about you but I don't consider it arguing when where having a discussion about facts. When it comes to this kind of discussion everybody visually sees something different. Example. Only. In this kind of discussion some members seem to forget there's a big difference between a copy machine. And a hydraulic press. I hope I get this term right but someone who is a machine technician looks at that piece of equipment differently than someone who operates a copy machine would look at the same piece of equipment quite differently. And I'm man enough to admit when I first started a lot of my beliefs were outdated. But being on coin talk force me to go back to school and I really hated school in some respects. Because with someone with a learning disability they always have problems. But I've learned on CT if I'm going to interact with members. I need to do my research and find out as much about a topic as I can that's under discussion. My conclusion is there's been a lot of changes with in Numismatic since I started way back when. And ever since I joined CT I've had to do a lot of catch-up.USMC60
Short and sweet it comes from the machines - the only place it CAN come from. You also have to realize that "grease" as in "struck through grease" is a generic term. I really don't know what kind of lubricant the presses have in them, on their parts. But they most definitely have a lubricant just as any and all hydraulic machines do. And in my lifetime I've been around a whole lot of hydraulic machines, from the smallest you can think of to the NASA crawler you talked about - and I mean up next to it - on it even. And every single one of them, if you touched one of the hydraulic pistons with your hand or fingers, regardless of what kind of seals they have on them, you will absolutely get "grease" on your fingers. That's where the grease comes from.
GD I question your statement not disagreeing with on what you've done or been around because I do not know you so I cannot say. I can only go by your statements this particular press you're talking about does Not use grease. A lubricant base and without buying the service manual on this particular press a hydraulic reservoir is probably filled with a lubricating liquid about the viscosity of transmission fluid. And I would personally like to see the reservoir And the set up to the RAM itself and I can obtain them by purchasing the service manual but frankly I really don't care about it. I know enough about hydraulics because I worked with Them most of my life and repaired thousands of seals and pulled hundreds of pistons – the big shiny thing that is called the RAM. Or little depending on the size. And GD if you're so knowledgeable what coating is commonly used in hydraulic pistons.? I myself have been around improperly maintained hydraulics most of my life. And yes sir it can be messy.I can only take your word for it that you been up next to the crawler. Possibly the time that you were actually there they were still having problems with There lubrication. And yes sir on the adjusting pistons on each individual crawler is filled with a high velocity grease in the track adjustment piston. And another thing that makes me doubt your statement about grease everywhere especially on the crawler. Makes me want to asked you this question. Which I know personally what is a no no around liquid hydrogen and nitrogen.? And that would especially apply to the crawler that's hauling thousands of pounds to the launchpad.Another question what year did you become an operating engineer.Because the master mechanics that actually operate the crawlers and service the crawlers are all master mechanic operating engineers.Or at least they were.See in the last party Of your statement has me to a little confused. The only grease I've ever encountered on a hydraulic cylinder was an idle adjuster cylinder when the seal go they go. Have repaired my share of idler adjuster hydraulics. And yes or you can get grease everywhere. Now if you're finding grease on a hydraulic press you have a big problem somewhere.. Because every hydraulic system I've worked on over the years concerning presses do not use a grease because the viscosity is way too high they use a hydraulic based lubricant. And yes if you touch the surface of the piston and I suggest you do this while it is cold so you do not get burned you will encounter a very light coat of hydraulic fluid on that piston. And it's really even hard to tell because most body oils are thicker viscosity then some of the hydraulic fluids.Let's also not forget the crawler has been in use for over 50 years now.usmc60
Uh, grease or any kind of organic fluid would be a problem around liquid oxygen, not around liquid hydrogen or liquid nitrogen.
Kentucky you're absolutely right I basically forgot about the liquid oxygen. I was given a job to do it homestead Air Force Base which in the past I have done plenty of jobs there but the contractor I was working for had a job for me in a secure area. This was the storage area for refueling the jet aircraft on the base. Upon the core of engineers inspection of the equipment I was to use. Was denied access due to an excessive amount of grease on the equipment. The company I was working for at the time actually had to go to the dealership and it rent a machine I should say a brand-new machine that had no exposed grease whatsoever or oil. Then I was granted exit access to do my job. I believe at the time they were still flying the good old F-15s smoking dragons is the fly boys on the base commonly called them. Along with other names for fighter jet you could see that thing come in miles away. I was doing a job for the electricians when they changed over to the F-16s and mothballed the F-15s. Or sold them to other countries. Oh Kentucky you mean that fingerprint I have on one of my coins is from a leaky grease seal. LOL
usmc like I said above - grease is a generic term - one that covers and includes any all forms of lubricant. So when the term "struck through grease" is used, "grease" is being used in place of the word "lubricant". No matter what form that lubricant comes in.
GD I totally understand where you're coming from. But as in every day person on the street if I took what you said is grease is a generic term that covers all lubricants. So generically every time you drink a glass of water you're drinking grease? Because if you been watching the news water is nature's lubricant. And it is quite effective that's why over 20 years They started started using it on the space shuttle crawler. GD next time you go out to dinner. Asked your server if you can asked them a question. I have not found one yet that you cannot asked this question or basically anyone in general public. I enjoy doing this quite often. Because if you really want to know what people think you have to ask them. Asked your server what the difference is between grease and a lubricant. You may be surprised at some of the answers you get. Way back when as an apprentice mechanic. The mechanic I was working under asked me one day to go bring him some grease. I came back and handed him a can of oil needless to say I got my first lesson on grease and oil due to the vulgar language used I cannot express what I was informed of. And this was some odd 35 years ago. And GD after our last still little discussion I went on YouTube and started viewing videos of coin production at the Philadelphia mint. Which they are quite a few of them out there. I particularly paid attention from the dryer and heater to the upsetting machine to the press. Could not find any source of a fluid contamination from that point to the press. GD if you can see And point out in any of those videos where fluid should leakage could possibly come from except for the press itself please enlighten me. And of course if you go far enough back on mint production footage you're going to see one messy production floor. Compared to the days production floor but GD I will admit one thing from the roll of material used to make blanks is a possible source of contamination. All I know over the years there is some grease that does not wash off easily. And GD I think you will find this also interesting if you stop the video you can go frame by frame which I did on the machinery on the production floor. I seen something very interesting on the upsetting machine one little piece a nickel which is visible. GD I don't know if you've ever tried that but I found it extremely helpful and you can see things that you normally would not see because of the video this is not slow-motion you actually go frame by frame of the video. GD if you find something that I missed I will gladly go and look at the video.USMC60
