Homey what's this what's this so we had a delivery from one of our local viewers from north Brisbane dropped us off some dog stuff and a six pack of beer for carl thanks for the gifts good boy who's dat how you going guys Kurtis from cutting edge engineering today's job is going to be part one of two we have two lift cylinder barrels off a zx670 to be repaired and two pistons to manufacture the boom lift cylinders are what lift and lower the boom when the machine's in operation what we've got here today we've got the left and the right barrel and we've also got the left and right piston the left barrel seems to be in worse shape than the right hand side it seems there's been a foreign material of some nature make its way into the cylinder and because the cylinders share oil it has gone through both of them we're not exactly sure where this foreign material has come from we can't pinpoint what it was so the customer is going to have to strip all the hydraulic system off the machine pumps hoses pipe work tank the lot and try and clean out as much as they can get it back to a suitable stage as you can see by the damage in the barrels we are going to have to re-barrel the two lift rams because there is a material shortage at the moment on home cylinder tube in that particular size we're waiting on material for our barrels so we'll get onto them when it gets here and the pistons are pretty well dead there's no fixing these at all so for today we're going to start doing the piston so the two pieces of material it's a piece of 38 mmvs6 very close to a 4140 but machine's a lot like a 1045 it's not a nicer surface finish but that's no problem considering what they're doing this is a slug of 200 diameter by 95 mil thick we couldn't get a hollow bar anywhere near close to the size we needed so we're going to start with a solid bore out the inside start machining [music] righto guys so we've bored out the the new piston we've left about one and a half mil inside there to clean up i need to machine a recess down the inside of the piston here for the nut so the nut has got a relieved area on it that shoulder there this nut's not actually off this machine this is off a much much larger excavator but they all seem to run exactly the same sort of configuration everything just gets larger or smaller so we'll get that machined in there then we're going to flip it around in the machine and we'll start doing the other side righto guys so now that now that the recess has been machined i can flip it over in the chuck i'm going to grab it from the id of the recess that way i can do all of the other machining or 99 percent of it with the one set up that then allows me to finish bore the id to suit the rod face it off so that's going up against the end of the rod or up against a cushion bearing and then do the outside then i know everything is nice clean and straight parallel with each other there won't be any interference in the barrel there won't be any interference on the rod everything will just go together 100 perfect so there's probably other ways you could do it you could create a spigot machine a spigot that the piston slips on and a nut that tightens up against that there's been cases where we've had to do it that way but when you've got a recess to use and you can grip the part quick easy simple [music] one point 7 mil to come off exactly a mil to come out spot on the money is that for me no no this one's not for you well it could be coarse and fine cool very cool very handy thanks tristan from perth yeah thank you very much perfect got to flip the part to grab the other side [music] right so that's piston number one done let's get cracking on number two [music] righto guys we've completed the machining on our two pistons they're both 100 percent finished now we're going to give them back to the customer they're going to do the assembly so put these back on the rods seals so on and so forth for those who might be wondering to buy a brand new piston from the oem is about 3700 dollars australian we can well and properly make these cheaper customers decide to go down that path save themselves some money so once the material arrives for the re-barrels we'll get stuck into that so stay tuned for part two we're going to go into the cause yeees just just get the intro done right or ready yup how you going guys Kurtis from cutting edge engineering so [ __ ] train righto guys so we've bored out the the new piston we're left about one uh we've lift righto guys so we've we've uh righto guys so i've finished machining up that re uh [ __ ] righto guys uh [ __ ] how did i start the last one i can't remember [ __ ] it righto righto guys so oh [ __ ] i totally lost it oh [ __ ] i lost it starting again yeah so we do have [ __ ] so the cylinders [ __ ] me so the cylinders are off a uh [ __ ] they're the boom lifts oh [ __ ] they're the boom lift rams oh [ __ ] me i'm having a moment [Laughter] one word at a time um so using oh [ __ ] me it's not funny [giggle] so yeah yuh [giggle] so as you can see by the damage um so wait what the [ __ ] oh my god so [Laughter] and that's it we're going to do it you're going to get wet pfft hang on oh bull [ __ ] tight i just blew a big hole through it it ain't tight no more i'm going to clamp this thing into [ __ ] something so I don't have to try and hold it the inserts [ __ ] [ __ ] i'm just going to change it go away you little bastard homeless shush meanwhile where's my gift [Laughter] oh my god [Laughter] you are crazy hey did you have fun lay down lay down no lay down spin around good boy yum yum yum yum good boy oh my goodness hey oi oi oi clean it up oi what's all homeless eat them up of course
2021-10-31