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monster robot monster well the well joints for this truck are stronger than the casting a river of metal a backbone of Steel it's pretty awe-inspiring to be working on something that's this large it's a groundbreaking design on a groundbreaking scale even though we build them top they get you stuff a mining Marvel manufactured at the super factories of Caterpillar it's one of the world's largest dump trucks hard at work on the oil sands in Alberta Canada it's the caterpillar 797b and everything about it is huge just check out its stats height more than 7 meters almost two stories tall weight when loaded nearly 600 tons more than a Boeing 747 and power enough to move mountains it's got a giant dual engine that delivers over 3,500 horsepower that's twice as powerful as an m1 tank maybe this monster's a job as big as its payload to build this more than 3.4 million year old beast it takes mega factories including six huge facilities across North America caterpillar creates the engine in Lafayette Indiana michelin manufactures the five ton tires in Lexington South Carolina the state-of-the-art cab comes to life in Joliet Illinois and the 45 ton dump box assembles in Canada but to join up the huge frame and most of the components it takes caterpillars mega Factory in Decatur Illinois and where does this Titanic truck all come together not here this behemoth too big to ship to any customer in one piece to assemble the 600 plus tons of individual parts it takes 20 non-stop days and it happens on site where the monster machine gets put to work places like Fort McMurray Canada near the sprawling Alberta oil sands and before the build it all starts in a meet Louisiana a mecca for molten metal known as the a meet foundry and machine company where they cast the phenomenal frame in the state of Louisiana we make gumbo we also make bevel the 797b frame is the backbone of the truck the essential building block that holds the mega machine together and carries its enormous weight the frames made up of nine separate castings it stretches over 11 metres long and weighs nearly 28,000 kilos the frame was too rigid or wasn't designed to flex it would result in cracking of the frame would cause extra maintenance it would contribute to downtime and ultimately the customer would not be able to haul the ore that he needs to pay for this truck at the Ameet foundry the crews making the center casting the frame piece that supports the trucks huge payload it begins with molten metal and this is the star of the show a 45-ton metal melting oven called an arc furnace here's how it works the crew fills the furnace with scrap metal operators lower three highly charged electrodes into the chamber when the electrodes touch metal they create a scorching 2200 degree electric arc the heated metal bubbles then melts two and a half nosey hours later this liquid metals ready to pour and that calls for this trained team the ladle crew the crew uses a manned crane to guide the empty nine ton ladle to the waiting furnace out towards a fiery river of sixteen hundred and fifty degree metal hotter than a volcano the ladle crew also has to tackle some critical chemistry they add packets of aluminum and silicon these special elements create deoxidation a process that drives out harmful oxygen hydrogen and nitrogen from the metal left alone these gases can form bubbles or pockets inside the forming metal bubbles that can weaken the frame now the tricky part guiding the ladle to a part smaller inside this mold there's a cavity in the exact shape of the final frame piece the crew positions the ladle above the four entrance making sure to stay back from the scorching heat molten metal fills the cavity in a fiery flash the steel filled molds have to cool a full 36 hours once cool the mold comes off at this point the casting looks rough with coarse metal knobs sticking out like a porcupine to get an even finish crews cut off the excess steel another crew then chips and grinds the casting Slope the last steps called heat treating the object is to give this hardened-steel more flexibility allowing it to bounce over rough roads without cracking the parts metal molecules heat up again for several hours at over 900 degrees as the molecules cool they rearrange themselves into strong yet more flexible bonds key treating makes a brain saving difference the grain is it's sweltering work but they're metal boring prose once the Ameet foundries finished their 797 p frame pieces they shipped them off for assembly at the caterpillar Factory in Decatur Illinois but first to see the load-carrying might of this whopper dump truck in action it takes a trip to the oil sands of Alberta Canada here they don't drill for oil they dig for it the oil called bitumen is trapped in the sand rather than in oil pockets under the ground the 797b dumptrucks critical to the mining operation each day these extreme machines move nearly 275 thousand tons of ore from the mine site to oil processing plants where skilled workers use crushing combines hot water and engine powered refiners to separate the oil from the sand eventually this crude oil becomes gasoline kerosene and jet fuel okay we're off to shovel one out here the oil pits are ground zero these shovels are towering 20 meters thirteen hundred and sixty tons digging machines that load up the dump trucks with oil sands with oil demand at an all-time high every second counts working non-stop each 797b truck delivers the equivalent of 200 oil barrels per load but before they can haul huge loads these monster machines have to be built Decatur Illinois a caterpillar mega factory with 28 buildings covering over a hundred and 40 hectares it's one of the top mining and construction equipment facilities in the world and the manufacturing hub of one of the world's largest dump trucks the 797b I'll dump truck in the makings 9 steel frame pieces have arrived from outside foundries they're ready for the next steps machining and welding here in building D workers first prep the metal joints for a super smooth weld this rear casting section would come in rough from our supplier and one of the things we do here at Decatur caterpillar is we'll machine these surfaces we assemble Orwell's a truck we machine these casting surfaces in order for a very tight control of these joints providing a very good weld joints the fill came out and a mill this top bar completely flat takes about five passes to get it to where it's supposed to be we try to give the welders the best well surface all possible so that way there won't be no cracks or anything in the weld the caterpillar brain pieces joined together in three main stations the robotic welding area where machines fuse the mainframe together the checkout station where the final weld steps finish off and the area where it all begins the tap fixture station right now the initial welds underway Randi shouri and his team are putting each frame into a jig a huge vise that holds them in place we're taking all the parts and making the basic frame of what's going to eventually be to 797 these parts range and weight from over 200 kilograms to more than 5 tonnes for a single part moving them's a massive job Randy needs help from a remote-controlled crane but first he has to position the change carefully to pick up each piece one mistake here could cause a colossal crash yeah you got to get everything just lined up just right you got to have your chain centered up and when you pick it up you got to be careful so it doesn't fall over one way well it's leaning a little bit too far the one way but it's close enough that I'll be able to set it in the fixture to ensure a strong weld Randy has to line up the pieces perfectly in the jig with only a tiny gap between the seams well I'll just set this part in now we're going to take all these here bars and tighten everything up and get it into position we'll start welding right down here and weld all bring this up and weld it all the way around here and down over this other side one of these here probably takes on average three or four hours Randy and his team must tackle an impressive 18 welds in total this giant caterpillar frames starting to come together but the monster welding's not over yet before the frame can shoulder the load of a 797b dump truck it has a date with some super-sized welding machinery that takes this assembly process to high-tech Heights for more than 80 years caterpillars yellow iron has transformed the world no one on earth makes more construction vehicles 200 different types of machinery at work in nearly 200 countries the caterpillar success story began at the turn of the 20th century in the California farmlands inventors were in a race to replace horse-drawn farm equipment with new steam engine power the first prototypes were so heavy they sank but in 1904 an inventor entrepreneur named Benjamin Holt came up with an ingenious solution tracks replacing the rear wheels of his machines with sets of tracks these tracks distributed the weight of the machine more evenly and allowed the machine to actually float across the field the revolutionary track design kept the machine moving no matter what the terrain a photographer saw one crawling across a field and called it a caterpillar the name stuck and became a whole trademark in 1910 then in 1925 the Holt organization joined forces with farming manufacturer CL best and the caterpillar tractor company took off today caterpillars massive machines surpass anything its founders could have imagined Decatur Illinois a caterpillar mega Factory this train teams already hard at work building the support structure of the dump truck a towering steel frame weighing 27 tons it's strong flexible and built to last over two decades an engineering wonder we like to refer to it as the backbone of the machine that essentially is the the component of the truck that's going to carry the reliability we would change out engines we change out suspension components etc but the frame for the most part stays around for the entire life of the truck they're gonna be hitting the ruts you're gonna be hitting essentially very large potholes so the frame must flex in order to take up the bumps on the road so far randy shouri and his crew have fused together the ninth foundry crafted steel pieces into the precise shape of the frame it's time for the next stage robotic welding this 21 axial robot welder towers seven meters one of the largest welding machines on earth it takes nine computers to run this automated Goliath here's how it works - robotic heads tackle the frame seems a touch sensor calculates each weld seems exact width and depth it takes the Machine more than 20 long hours to fuse everything together just right conquering this task is a mere mortal forget it robotic welding provides consistency a level of strength the same level of capability in that well regardless of whether it's on a Monday or the next build stations called the rollover technicians tackle the hard-to-reach wells and any high stress areas that have to be extra strong this work demands the human touch eyes are a lot more sound than the ones at the robot each frame uses an amazing 125 kilos of welding wire a fast melting metal jointer that works like hot glue welder Shannon Bale is working on structural supports called drop tubes the reason why this world has to be so tough is because it's a very high stress area it's always on our extreme high stress because on each end of this tube we have two cylinders that raise and lower the bed of the truck Shannon's using a special welding wire made of carbon steel that hardens fast to prevent drips this speed freezing wire allows welders to work uphill without making a mess but it's delicate work I would strike an arc here what I do is if you could see this I just hold here then I come over here like a Christmas tree then I'd hold here then I come up just a little bit more than I'd hold here for a little bit that way we're tying these sides in together and they just keep on working your way up when I first got over here this is the job I wanted to do because this is so neat at last the frame assemblies Titanic task is done all nine pieces have been welded together but before this build can go any further this frame gets a tough inspection a 797b frame must be rock-solid or the whole truck could collapse technicians double-check critical seams with a tool called an ultrasonic flaw detector it's a lot like the ultrasound used to monitor babies in the womb ultrasound technology works similar to sonar the tool emits high-frequency sound waves through a special conductor gel an attached computer detects and converts the sound waves based on how they bounce back generating colored images that reflect strength and well density the system works like an in-depth detective revealing any flaws justin james is in charge he takes 3 hours checking every frame like right now it's light blue which is a very bad and that means we're gonna have another problem no red in sight the welds are good it's painting today the paint booth teams working on a giant earth raking machine called a motor grader every caterpillar vehicle gets a two to three millimeter coat of durable trademark yellow and this is no ordinary paint job caterpillar sticks to a method called an electrostatic paint process a specially designed spray gun gives the paint a negative electrical charge while a supporting track gives the tractor part a positive charge when the yellow spray flows the negative paint attracts to the positive steel and voila a flawless finish here on Alberta Canada's oil sands oil is everywhere it's literally trapped in the sand it takes off-site refineries to physically separate the oil from each grain but underfoot this oily sandy mixture makes the ground soft sticky and abrasive tough conditions for the 797b and even tougher conditions for the world's biggest tire towering over four metres high weighing five tons each giant XDR tire is as tall as a one-story building and sports enough rubber to tread 500 regular-sized cars they cost a lot to anywhere from 35 to 65 thousand euros of peace each 797b dump truck needs six tires total to up front foreign back that's a heavy tire payload these super-sized tires get their start thousands of miles away at the Michelin tire factory in South Carolina to build these monsters take several critical stages first the raw rubber goes through a machine called a plasti fire where it's ground up into gooey pellets the pellets then travel to the mill where another mega machine called an extruder stretches the soft pellets to create a thin rubber layer we can feed it over into our the massive rubber sheets spray cool and dry off workers roll them into a circle but to become a true tire this rolled rubber needs painstaking personal attention incredibly at the hand assembly area workers hand form every 797b tire as the team smoothes and aligns them the sticky rubber sheets naturally adhere to one another it takes a lot of rubber layers up to a hundred and thirty sheets in total to form the tires main surface as I'm laying it use my hands to make sure that it stays on that laser and that has the right amount of tension apply all the products the ladies evenly all the way across you roll down the joint to release any air that may be trapped technicians then insert a layer of rubber wrap steel to give the tire strength and durability the bigger the machine the more steel layers these tires need a large earthmover tire may use as many as six steel layers called belts technicians place these huge rubber rolls into a top-secret mold here pressure and heat force the rubber to take on the tread pattern that makes these caterpillar tires the strongest in the world 12 hours later the finished tire emerges but before any tire can hit the road it has to pass inspection I'm looking for any kind of non conform on the tire bad molding format or anything of that name at last the gargantuan tires passed the test there is solid as they are huge these tough treads are now ready to stand up to the worst conditions the Alberta oil sands can dish out and out here on the job these mega beast vehicles have to run 24 hours a day 365 days a year the secret to their success a 3550 horsepower engine to give to this towering dump trucks engine you have to climb a flight of stairs the 19 tonne engine sits deep in the dump trucks belly this helps give this giant earth excavator a low center of gravity keeping it stable on rugged terrain but to see the creation of this monster diesel burning powerplant you have to travel all the way the Lafayette Indiana to the hundred and forty thousand square meter birthplace of the 797 B's engine there's no greater feeling of power than building a 35-hour engine just how massive is it for sheer power it would take seven Ferrari f430 engines to match it and wait ed over 19 tons the engine alone weighs more than eight Ford f-150 pickups max of what you'd see in your car little eight cylinder engines and here we have twenty four and not only that they're really big it's pretty awe-inspiring to be working on something that's this large these 24 cylinders add up to major horsepower horsepower measures the maximum power output of an engine the bigger and heavier the vehicle the more horsepower it needs the trick to building an engine strong enough to drive this Titanic dump truck using two engines together into one to crap the unique double engine every build step here happens twice when it's all put together the 797 B's diesel power plant turns into the largest truck engine in history when we needed thirty five hundred and fifty horsepower for this 400 ton truck we had available to us about half that much horsepower in one 35:12 engine so what you see here is 135 12 engines another 35 12 engine we made a mechanical connection between the two and we made an electrical connection between the two and what you see here is a finished product one monster 30 550 horsepower engine we call that a 35 24 like most diesel engines the fundamentals are similar only super-sized here's how the engine works inside the cylinders Pistons attached to connecting rods compressed air the pressure causes the air to heat up fuel then injects and combusts forcing the Pistons down and turning the crankshaft the crankshaft transmits the energy through a set of gears that ultimately drive the wheels the connecting rods are one of the engines most critical components they attach the Pistons to the crankshaft each of these strong steel connecting rods is three times longer than those in a typical pickup truck the pre-made connecting rods come to the factory in rough form workers machine grind and smooth them to a precise size and weight leave any rough spots and the entire engine could break down later on basically take the rough forging and bill it and it'll like this and then you'll get a surface like that when you these blocker for the cap and the rod they form a perfect circle if they get Swift it causes this circle to mess align with another part and they no longer allow the engine to run friendly the engine crankshaft next inside a working engine this 500 plus kilogram giant rotates nearly 2,000 times a minute it too must be perfectly formed and smooth down or it could break the engine apart team leader Troy Brown uses a hand controlled hoist to lower the rough crankshaft into place to get a perfect finish the team uses a stone grinding wheel called a pin grinder the pin grinder first positions the crankshaft against the stone as it speeds up crankshaft and stone make contact sparks fly even with the liquid coolant the grinding stops only when every surface is perfect components be precise is the heart of the engine now the engine block this slab of metal houses all the engines critical components the technicians machine the sides and bottom and bore holes for wiring fuel and moving parts when the doors closed you'll see the coolant kick on and the spindle will start turning and will start generating a hole so that's what makes this solution unique in that they have a very accurate machine tool and that's capable of working a very large component once perfectly machined the connecting rod crankshaft and engine block all come together in an area called the engine assembly short line in this point we'll inspect it amenda and checking for any loaded up in the engine block behind me technicians lubricate hoist and secure the crankshaft into the engine block next the pistons meet the connecting rods these piston powerhouses are way heavier than those in a standard pickup truck how do you attach a piston this massive with a piston stuffing robot this is the kiss and this the next to the crates affability then they'll be bolted on its job well done the engines internal parts are safely installed at last it's time for this diesel behemoth to travel down the main line and get some personality first heads and rockers during combustion the rockers open the valves within the engine cylinders to let in air and fuel without rockers an engine grinds to a halt workers use a mega high-tech machine called the ten spindle to torque or tighten the bolts the ten spindles pretty cool because just one little push of the body easy next technicians install after coolers fluid lines and finally the wiring groups at last after multiple painstaking steps and build teams the engines complete it's ready for a one-way ticket out of here and a date to meet up with one phenomenal frame back at caterpillar 797b assembly headquarters in Decatur Illinois the engines just arrived from lafayette ready to take its place inside the finished frame teams install the engines hydraulics and wiring system a crew then hooks the engine to a 55 ton remote-controlled crane with parts this size assemblies a big challenge and in this case it's also a tight squeeze like a glove you'll have so much room the team carefully guides the 20-ton engine into the gap in the frame success bolts lock it firmly into place this giant vehicles starting to take shape but to get this machine in the making road ready it takes two skilled workers with safety straps and a remote control they carefully guide the more than 40 ton beast onto the flatbed delivery truck you have to really be in tune with the guy that's beside you any off balance the straps break from one end to the other mission accomplished the caterpillar 797b frame and engine are ready to hit the road but to become a mega dump truck there's still two major hurdles left final delivery and final assembly and it all happens almost 3,000 kilometres away in Alberta Canada it's gritty and grainy and it's one of the toughest environments on earth the oil sands of Alberta Canada here dump truck drivers like Paula freek spent 12 hours a day hauling ore from the pits transporting it to oil separating in refining plants the truck cabs their office and command center to keep fatigue at bay everything in the 797b cabs Bergen AMA CLE designed from panoramic view windows to hydraulic adjustable seats to control panels with user friendly icons everything in here puts creature comforts up front now we have a good HVAC system in here that keeps them cool or warm and ergonomically seated so that they don't get tired because if they lose control of this equipment or their attention is lacks there could be serious consequences to build these colossal cabs from the ground up it all starts here the Bergstrom Factory in Joliet Illinois it takes a single dedicated technician about 40 man-hours to construct the entire cab from start to finish today master assembler Brad Hills training rookie John Chamblee overwhelmed that was kind of like is this really one person tab does one person really gotta have his done certain tomorrow first up the cab seat getting this installation just right is critical to driver safety the team maneuvers the seat through the door and secures it to the floor Brad tightens the bolts by hand next they attach special hoses that feed compressed air into the chamber the air chamber hydraulically adjust seat height the result perfect driver alignment John tries his hand installing the cabs panoramic window each specially designed windshield offers the widest possible sight lines of the haul road prime visibility that helps keep operators safe and in control the cabs even equipped with built-in sound barriers to protect the drivers hearing over the long haul literally at last after several days of painstaking build steps this dump truck command Central's ready to take its place at the helm of a monster machine back on the oil sands shovel operators scoop hundreds of tons of sand into the dipper and drop them into the 797b dump truck and to handle this mega mountain of war caterpillar designers gave the 797b the ultimate dump box nearly 10 meters long made from solid steel this enormous box is so big it can hold 96 Ford Explorers and it's assembled here at the leo roberts fabrication facility in Fort McMurray Canada trained assembly teams craft about one of these monster boxes a day the 797b box is made up of five prefabricated pieces the floor to side sections the front wall and the canopy welder preston shiner hooks up the center floor section to the crane he joins it with the other pieces for bolting and welding and moves it to the work area once airborne this 15 ton metal slab becomes a handful the only means of control a tagline a piece of rope that stops the floor from swinging as it lines up with the cart the floor must be carefully placed on the cart or everything could dangerously tip crane operator Victor major guides the first sidewall section to the cart he carefully maneuvers it into place the both the floor and sidewall pieces together builders use a tool called an impact wrench the impact wrench uses air compression to ratchet up the tightness of each turn but there's a problem even with securing bolts in place the side wall and the floor won't line up a piece of metals in the way the solution cut it out with an oxy-acetylene torch the torch mixes the oxygen with the highly flammable gas called acetylene it creates an extremely high temperature flame burning at over 3,000 degrees so hot it cuts through metal like butter with the first side section of the 797 dump box secured Preston maneuvers the second wall into place the team bolts the floor and wall together a solid fit now for the final piece the front wall the team uses a crane to grab and hoist the wall into position but there's another glitch the box is slanted to line the wall up the team has to pull the bottom in a crew member cuts a hole in the base of the wall and attaches a winch and chain slowly pulling the wall into place done a welder now attaches bolt fixtures to the front and to side walls and pulls them together with an impact wrench the last task tack-weld the front and side walls together this stops any slippage between the three pieces during the final welding at last the behemoth 797b box is complete but to make sure it can stand up to some of the heaviest loads in hauling welders have one last job over the next seven to ten days technicians fuse every joint and seam until these assembled parts can truly brave the rigors of the oil sands caterpillar manufactures some of the most powerful machines on earth but for the biggest monsters final assemblies a giant challenge to put the caterpillar 797b together at any site around the world it takes seven technicians working round-the-clock 7 days a week for 20 days Tristan Hamilton and Soren Thomason work the day shift they're assembling our dump truck in the making at the oil sands in Fort McMurray Alberta Canada usually we work in teams even the tools themselves are too heavy to operate by yourself so a lot of times it requires two people in order to do a job mechanics have already installed the axles the engine in the cab group now it's time for one of the trickiest parts of the build installing the 6300 kilo transmission this job calls for a heavy duty crane the challenge make sure the sling holding the transmission strong enough to handle the weight without collapsing if we weren't to use the correct lifting devices up here we could 1 we could easily overextend to swing and break it or we could drop something heavy and worst case scenario hurt somebody to measure and monitor the sling engineers designed an ingenious safety feature called a tattle-tale the synthetic fiber tattletales loose strands hang down from an empty sling as the stretch sling takes on a heavy load the tail retracts technicians watched with a tattle-tale at all times it tells them if the sling stretched too far if this is no longer visible then that's the indication for us that something has been done that's not right with the sling we take it out of service now the stakes get even higher the team has to fit the transmission into a space not much larger than the part itself one wrong move and another part of the truck could take a damaging it it's a very tight fit and it's we're dealing with such heavy waste it's very important not to let it touch anything the team installs the transmission with pinpoint precision mechanic Tom chases next job hoist the four meter five tonne tires into place these steel belted rubber behemoths bolt to the axle with some serious hardware all your typical automobile would have five or six wheel not to talk to approximately seventy-five to a hundred foot-pounds this one's got 47 nuts in there torque to twenty three hundred foot-pounds and a giant tire needs a giant tool the air operated torque wrench this is a one of the more physical jobs that we do well I'm trying to support the machine as close as I can to my body and the farther out that you hold it of course that heavier it gets so I try and cable it into my arms and supporters outweigh so it got to keep it close and it's not quite so heavy that way with the wheels in place it's time for rubber and ground to meet at last the team lowers the truck off the assembly risers using four hydraulic jacks touchdown this machine's ready to make its final journey to the mine site nearly 25 kilometers away but these Goliath vehicles are too heavy and too wide to travel on ordinary roads and that calls for this beast a whopping wheel trailer more than 40 metres long the transport team positions the trailer under the truck they put wooden blocks beneath the front and rear axles these blocks support the trucks weight and keep it stable during the journey once the team secures the dump truck in place the trailer slowly moves out it's on its way it takes one and a half hours to travel from the workshop to the mine site here the team offloads the truck but this monster needs its last critical part it's time to head to the workshop for the final assembly process the Box attached getting the dump box ready to attach to the truck is a tough challenge mechanic Nelson Matta tube begins by connecting strong synthetic fiber slings to the box using a 22 kilograms shackle before it can fit into place on the dump truck it takes four slings and two cranes to lift the 45 ton monster box Nelson maneuvers the first crane into position he then connects the sling to the box okay no we'll do the other side once he's got all four slings connected Nelson begins the lift he operates both planes simultaneously to keep the Box level surprisingly this treacherous task has to be a one-man job for one person to do it then too because if you got two guys right I'll be stopping the other guy might be starting to swing this way one guy's controlling the whole situation while Nelson Lystra dump box a driver moves our 797b out of the adjacent Bay and reverses the monster vehicle beneath the dangling part Nelson slowly begins to lower the crane now for the tricky part Nelson must lower this giant swinging 45 ton box unto to pin supports this is one high pressure jigsaw puzzle not even a few inches there's only an hour there might be a half an inch on each year there it's all a matter of timing Nelson waits until the two parts are lined up and then carefully lowers the box the boxes in mission accomplished the team now anchors the dump box in three places at the rear pin supports the hoist cylinders and on two front pedestals they start with the rear pin supports the first step jam a set of shims two metal rings between the dump box and the pin supports this stops any side-to-side movement during operation the next step takes muscle hammering the pins in place the beasts in it last to finish the job the team tackles the pins that connect the hydraulic hoist to the dump body mechanic Douglas Navas starts the 797b engine he raises the hydraulic cylinders lining up the pin holes with the bottom of the dump box he's going for a tight secure fit the same procedure repeats on the other side of the truck and the front pedestals Nelson positions the pin into place time's up drive it home finally Nelson flexes the monster machines muscles raising the truck bed this whopper dump truck now has the ultimate part assembled perfectly it's taken six factories over 600 tons of material multiple teams in about 80 days at long last this Colossus has come together armed and ready to do battle on this mega my site seeing what the product does seeing carry 400 tons at 40 miles per hour that gives a great deal of pride

Channel: Davy Schokkaert

Views: 892,491

Rating: 4.5665293 out of 5

Keywords: caterpillar

Id: 6C1XA2fLN2Y

Length: 49min 51sec (2991 seconds)

Published: Fri Jan 22 2016