PULL GEAR Reassembly PULL GEAR Tips #472 pt 3 tubalcain

howdy once again it's true looking your internet shop teacher welcome back this is tips number 4 72 on the reconditioning and reassembling of the pull gear gear reduction device now watch if you have not already tips for 70 and for 71 where I have taken this apart so this video is devoted to reassembling and several other things that I need to do it and do to it and as I told you I my order do Barry had needed three new bearings so there they are straight for Michigan ready to go in a sealed package but let me talk and spend a little bit of time about planetary gear systems and what they are the purpose of them and how they work I'm not an expert on gears by any means but you know planetary gears were used way back a long time ago it's nothing new at all matter of fact Leonardo da Vinci talked about him he wasn't able to construct them but he talked about him but Henry Ford used them in all the Model T's and they're just used in countless devices I had one in my 54 mercury overdrive they used them in bicycles in just all kinds of different places but let me show you one that I have here on the premises then we'll talk about this I used to be famous yeah I was famous alright for my cutaways and I made a lot of cutaways in my what makes it work series nobody watch them so I stopped doing that but I bought this bicycle for five bucks last fall and the whole purpose of me buying it was I was going to do a cutaway of the rear hub here this is a three-speed bicycle I had one when I was a kid from England I just love this is so far superior to the derailleur system the 15 is speeds which is so foolish you don't need 15 SP so you rather than take this apart I've been writing it this thing this thing works like a triumph at shifts and totally had sent me this this is a brand new 5-speed system well why am i showing you bicycle who cares too about this well this has a planetary gear in it this one has two planetary gear systems in them and I don't know if you can see or not but uh here in the parts list is the two different gear systems thanks for this totally that's all the time I'm gonna waste talking about other types of planetary gear systems because they're just used in so many many different devices but of course the devices are are sealed like this so you can't really tell what's in there furthermore nobody cares I shouldn't say nobody cares because this particular cutaway that I made some time ago of a coaster brake was intriguing and had an awful lot of views but the people that watched this video are not my regular machine shop viewers they are really bicyclists i thinking and they did like this very much so that's what i was going to do with that three-speed planetary system but oh i'm way off topic way off subject here although maybe not but i was going to do a cutaway of this well i don't want to ruin it so in fact i'm not gonna do a cutaway how this planetary system but i'm gonna try to explain it in my layman's term because i'm not an engineer however since i don't want to ruin this and cut it away i'm making a visible one with with Plexiglas so you can see through it so i have already done that let me throw it together real quickly here but first let me talk about the different parts we really have a series of gears this is the sun gear the Sun gears in the middle like a solar system i guess you could say and then these are the planetary gears that go around it and this is the the ring gear and some people call it the reactive gear I think somebody wrote that in I believe that's one of the terms maybe that engineer is you so let me go ahead and put that carrier on the that holds these and we call that I guess we call that the carrier with awful a lot of information on Wikipedia about this and other videos so check them out if you have an interest in years and how they work looking at it from this side from the Plexiglas here you can see that we have the Sun gear in the middle and that's what's driven by this shaft is falling apart on me so the Sun gear is driven but in some systems the driving gear will be on the other end but let's talk about the more basic ones so let me put this real quickly on to the the ring here I might have told you once before that most often you're going to see three planetary gears rather than the four but in fact there's only two here two of these are idler gears that is this one and this one are more or less ikura gears that are only used in this assembly to reverse the direction of rotation otherwise when this was installed on the drill press you'd have to run the motor in Reverse so you'd have to have a reversing switch and all of that then that would make it complicated so they put an extra set of gears in here to reverse them again I'm calling them idler gear but what happens here when we turn the driven shaft which is the Sun gear you can see the power train here and this is a bit of a jammer here because I don't have good bearing I hope this is a clearer view and I got it running a little better but visualize the cover on here with the carrier now the plastic is the carrier this is the input shaft but in fact it's being driven at the other end by the belt pulley and notice that the shaft is turning faster than the clear plastic in fact there's a four point five to one ratio again essentially using two planetary gears instead of three disregard the fact that there's four because two of them are idler gears news to reverse I said that before but hopefully this gives you a little idea what's going on inside of this pole gear reducer and then when you lock them together of course they're running at one in the same speed this is the original advertising sheet and I told you that it was available in two different gear ratios and I might have told you wrong I might have told you another video a long time ago that it was a seven to one ratio like this but in fact this is the four and a half to one reduction ratio which probably was the more popular one and the size and diameter and number of teeth and the gears would had to have been different in order to produce the seven to one that might have been a little slower ratio than what's necessary but how was that determined let me show you real quickly regarding in the gear ratio the Sun gear has 14 teeth and the ring gear has 64 teeth so just doing the real simple math and don't waste your time that was tuple count calculator they're so slow and you know they don't work if the batteries go out or the lights go out so you know we got to return to the basics here so that just very quickly here using the old slip stick here I haven't determined that the ratio is four point five seven or one but of course we have rounded that off to four and a half before I install the bearing so start to reassemble there are just a few things that I want to do to start with I have already filled this hole do you remember how buggered up that hole was and that's the hole that holds the rod so that when you're in the slow speed it prevents this from turning we'll talk more about that later but it was just so wallow down and it's broken out here so I filled it with the Oh what was a jb weld and I don't like to turn JB well because I have nothing to do with welding it's epoxy so I fill that that's a couple days ago I was going to put this on the lathe and and take a little bit off take a lake cut and sited against that for several reasons first of all I did try gripping it and just doesn't run true at all I'd have to make an arbor i'd have to just spend a lot of time on that I'm not willing to do that so I'm just going to file it down but you know it just looks terrible hear words broken out and then I also on the exact opposite side here I'm going to drill and tap a fresh new hole and that will be arbitrarily and capriciously decided upon to be 3816 and again let me show you why I do not want to take that much off on this if I did take a little bit off then I would probably want to take a little more off of this and this is badly damaged by Baga as well but there's just no material allowed here I would run into the bolt or the bolt hole there and I don't want to do that so I'm not going to do that however I am going to clean this up on the lathe we'll talk about that well let me do this one first and I'm not going to show all of it alright I've carried this out as far as I can without doing some major reconstruction again the hole is filled I drilled and tapped a 3/8 16 on the other side for the appropriate size this isn't the right size but for the stop rod to go into so that's all I can do with that now so I'll turn my attention to the other piece now I'm turning my attention to the pulley and this is just in terrible shape and so many people have said we'll make a new one well that's not an easy piece to make because there are two bearing recesses and those are critical dimensions and the distance between the two bearings is very critical as this space for the ring gear and then so that's not something I'm going to do others mentioned that a machine off the grooves here and press on a new pulley or maybe just one Shiv you don't need all of these but I'm not going to do any of that I'm just going to do the best I can with what I got but that this thing will be out of balance anyway we've got a big chunk knock now there and have already taken a file and dressed up the best I could but it is rougher than a cob and I'm sure it'll be hard on the rubber belts but one thing that I am going to do I'm going to put it in the three jaw Chuck right now and lightly file this and I think I'll take a light cut this just looks terrible and somebody pointed out that this was beaten on or pride or something from time to time to remove it from the motor of the electric motor so that's probably where all that damage came from so let me put it in the three jaw and take a late cut and while I still have it in the three jaw I'll Emery cloth this just a little bit but their marks looks like somebody had a pull around there and really just did a number on it but there's only so far I can go in this restoration you well it looks ten percent better perhaps only eight percent but I took a light facing cut but those gouges there are way too deep to take out I did clean this up a little bit and took off ten thousands off of the high spots here but it looks terrible that's gonna chip out sooner or later great Howard well that's as good as I can get it I am ready for assembly okay this is just a sample of something that you can consider when you assemble things that the plate is about 350 degrees now but these bearings and do not open the bearings so you're ready to use them but remember these have a rubber seal on both sides so they can't be overheated that'll burn off so I'm just demonstrating here how easy it would be to install a bearing here without pounding on it or pressing or anything else this in fact is the old bearing and I put a bolt in there just so I have a handle on it this is called room temperature and since this is now heated up it is harder to pistol a little bit of oil burning off from that bearing in there but look at this bearing that would be a press fit that's how much this casting has expanded so I could put the good bearing in there right now I'm not quite ready to do it and just just put it in there like that make sure it's all the way down and take this over to the sink and cool it off before the heat could be transferred and damage that seal just a suggestion in fact that's what I'm going to do right now that I'll rush over to the sink off-camera and okay that bearings in there I don't want that seal to get damaged so over to the sink I go off to cool it off well I got one bearing in and that would have been the easiest one to install of all but I'm just showing you that option but certainly one could have tapped it in with a piece of wood you could have drawn it in with a bolt could have pressed it in on the arbor press push it in with a vise as long as you keep its straighted and don't it so that's done and I have pondered this for several days on what is the order of assembly and I'm sure there is a better way or there is a best way that they use at the factory to put this together but I'm just second-guessing so mine maybe is only the good way or the better way but not the best way I don't know but concentrating on this piece the next thing I will do is to put the four gears into place and push these pins in also there are two cap screws here that go in and they do the heads just barely catch the rim of this bearing so that the bearing can't come out a lace tapping has all these pins indeed they've been oiled this is five thousandths thick shim stock so I don't press them to clay is that necessary I don't know okay and I'll do the two others the same all right that piece is pretty well assembled barian little screws in there from this side I need to put the get Soilers on but that can be done later on I cleaned out those oil holes real well I'm lucky that the heat didn't seem the damage that heat box either well now my attention turns to the other part and I'm a little bit of a quandary as to the order of assembly here but I think I'm going to start by pressing the the large bearing over the gear in other words that's the one that goes on like that and I'll do that on that Arbor press and I don't think you need to see that but here is the bear ring that I already took it out of the paper now when you hammer bearings in I shouldn't say hammer but impress them or however you handle them do not press by the inner race for instance to use a hole pusher like this on the inner race you need to push on the outer part because that can damage the bearing literally trying to force that inner portion out so and never hammer directly on them well there's just a lot of care that you need to consider when you're handling bearings because you don't want to damage them when you're putting them in I've seen it happen by the way there are the bearing numbers you saw the old numbers and the other video so I just pressed that bearing on they went on nicely I did use a 3/4 drive socket I forgot what size to push over work nicely now comes the tricky part this of course is the bearing that goes here and I think I will put that on last after the rest of this the assembly but for now I'm gonna try to put that on with the shaft I guess the question to myself is should I go ahead and press this shaft into this bearing and of course I have to line up this gear the Sun gear with the other gears as I do that which then I would have a good visibility of what I'm doing or should I press that in first and then attempt to assemble this whole unit into this unit there has to be one way that is better than the other and I hate to start pressing and then have to pry it or knock it apart again and try the opposite way so it's a little bit of a Chinese puzzle right now for me I took a vote between myself and my alter-ego and decided to press the shaft into this bearing first so I can see what I'm doing and then lastly put this part on so we'll see what happens I hope I don't have to knock it apart and I'll do that off-camera simply is so difficult to set up a camera in the dark garage and all that I don't think you need to see that well that took about 10 minutes of fiddling around I tell you it really taxed that little ton-and-a-half dake press I'm still breathing heard I think it's okay and now all the question is can i press this into this and missed the teeth there was kind of tricky mentioning the teeth with the input shaft a minute ago but that's the general idea of what I need to do now is to press these two together I think I'll save that for last although maybe that should be in there but if it is I'm really pressing two things at one time two bearings at one time which I don't really want to do that a hydraulic press I probably would and now the very last part it is to put this and that's gonna break off that's loose you can't worry about it I guess this will go on like this and I can tap it on but I think maybe I'll take it out to the press and press it on but I got to make sure that the gears are meshed first and they are and that looks like it's going to go on in this manner alright that's about as far as it goes together and seems to me that that's a little bit wider gap than what I originally had I'm not sure but and it's noisy it's very noisy I think that's just gonna howl at higher speed but you know what I believe I believe that all the gears are worn out and that this is just a worn-out unit even with new bearings that's not going to be great but at least we have the fund that as if this was fun of doing it and finally here the very last bearing that I will press on probably this way or I might go out into the garage with the press well you know what we're getting near the end here so I need to make a new PIN remember what this locking device is X I should remake that but I'm not in the mood can I have to be good enough but this is the old pin you can see that it's bent remember I had to file it off but upon examining it in detail I'm looking at it and of course it's been headed I'm thinking you know it looks an awful lot like a nail see where the grippers held it when they headed it now maybe that's what they used at the factory I don't know or does somebody replace that with a nail well it's a hundred thousands in diameter or thereabout so I'm just looking around at nails and I'll be darned if a 6d box nail 2-incher they're galvanized I don't need them galvanized but but that is exactly what I need it's more or less well not more or less it's 99,000 so that was a nail so getting ahead of myself here I already took the liberty of cutting it to length a nail out of this box and as Providence would have it that's about a number three so I did indeed thread it 348 you're not gonna be able to read that can't read it myself I put about a quarter-inch of thread on their sole and then I did have a nut but I don't like it I thought I'd have a whole bunch of nuts I got 256 and I got a million four or four years and all right so I think I'll go down to the hardware store and get a better one or I'll make one up out of brass and I think I showed you in one of the earlier videos where someone showed me a picture of one of these it was equipped with a nut on there whether it was put on later or not I don't know but simply threading the spring on dropping it in and grabbing it I know what you can't see a thing hold it like that put the knot on we talked about my hands looking like orcs one time I was at a funeral and when no one was looking I went and I touched the deceased hands they looked better than mine but like somebody said they got makeup on him but they were hurt as a rock so I was and cold of course you know what he expect but I didn't like it and I'll never touch another corpse in my life all right so and that might be a little too long we'll see but of course the whole idea here locking this thing is to lift and I might have to double not that that's going to be a place where I'll scratch myself but the reason I didn't head it like the original you know me I can take it apart maybe all of the originals were made that way I don't know well one more thing to do and tomorrow I will now it's locked up see like that you'll spin all right I have to drill and tap a hole then I'm going to have to make a bushing for this because this is three-quarters and I believe my motor shaft is either half or five minutes I got a measurer so I'll have to make a bushing unless I have one in stock so I really have those two things left to do before the job is done and I'm glad of it and I put the Oilers in there as you can see all right that's enough for today I'll see you on the morrow to finish this up I'm back it's the next day and I'm about done I've been doing a few things since I videotaped last and one is a tap a 5/16 hole for a set screw right here and that goes all the way through such gripping on a flat spot on this 3/4 and shaft because I'm gonna test run it here in a minute but just in the lathe I have pressed a little bit farther so the gap here is reduced probably about to what it was when I started I don't know I should have measured with feeler gauges and I went to the hardware store I wanted to get a nice little knurled not they had nothing in size threes they had some tools but I wanted to get one of these and I may still make one or Bush that so I have a little knob there that's a little bit larger diameter but they don't have anything like that they don't have anything that won't sell that might be on the shelf for more than 90 days they get rid of it the way all the box stores are - all right so what else did I do put some oil in there now as I told you before this is gonna be a real oil slinger and somebody told me that in one of the comments they said boy these throw the oil because there's just no provision for retaining oil he even suggested that some type of OMB install over there but of course I'm not gonna do that remember I got that 3/8 hole there and for the hold back I'm just going to use a piece that's right at a rod I've been working on this for three weeks and I'm kind of glad that it's coming to a conclusion and I like very much the way this works well does it yeah so let's put it in the lathe and see what happens as I conclude this lengthy three-part or more video I have set the pull gear up here on the closing lead and I've got to set at 450 RPM just to show you the reduction and of course there would be a belt going to the shotgun the drill the spindle so we got three speeds there and then really two speeds here because we have the direct and the gear reduction of four and a half to one ratio so watching the these are actually orange I don't know why they appear that color on the screen they're orange their price tags but anyway I've got the stop ride here installed and let me turn it on at 450 RPM and watch the reduction which means they'll be about a hundred rpm here on the shoe for this huh 450 and to put it in direct drive of course as a matter of removing the stop rock which is quick enough and locking this in you know I get to learn how to do that quite a bit of play in it I need to tighten up the set screw there now we are in direct drive well I hope you like to rebuild here I know I took a couple shortcuts I always do but it took three weeks to make this video as it is on and off of course so it's it's a big project and I'd like to get into shorter projects rather than these long ones but I think my friend for giving this to me and thank you for watching and if there's a lot of views on this I will do a follow-up video on installation of this on the drill press and perhaps even using it on the drill press to show you how it will work with larger drill bits like 3/4 and one inch to see if we have slippage of the belt because many people warn me know how the Domesday people are this unordered anyway throw it away because the belts are gonna slip so the only real solution is a VFD well I've done that and I've done a lot of other things to reduce the speed I'm just showing you different methods and again Frank gave this to me thank you Frank I'm sure he's watching thank you for watching the videos I have a lot of them out there there's nine hundred and some so go back and watch some of those old ones if you're a new viewer this is tubal-cain saying so long for now and I'll see you in my next video you

Channel: mrpete222

Views: 23,339

Rating: 4.9658666 out of 5

Keywords: lathe milling machine atlas lathe bridgeport mill mrpete222 Jul 8, 2018

Id: 7CYQ1KgOkEw

Length: 33min 31sec (2011 seconds)

Published: Sun Jul 08 2018