just how you going men Kurtis from Cutting Edge.
engineering today'' s task we have 2 d11 blade lift barrels in for fixing these barrels are.
off a d11 dozer and it is caterpillar'' s largest excavator they manufacturer as well as what these.
do these lift and lower the blade while the device functions and also if you remember from.
recently'' s video clip where we fixed the yolks the yolks attach onto these cylinders so if you can.
visualize the barrel standing up and down on the dozer the forks of the yoke go underneath the.
trunnion mount there are two caps that after that go over the trunnion installs and also get bolted onto the.
yoke they'' re not off the exact same maker however they do belong to the same client so these aren'' t in to. be re-barreled these remain in to have their trunnion installs fixed these mounts are always mosting likely to.
break because it is metal on steel contact you can fit oil nipple areas to these joints in order.
to assist with lubrication yet it'' s simply the nature of the way things work and also what the maker is.
doing they are mosting likely to break so there are bearings that then obtain fitted onto the trunnion.
mounts they are a sacrificial item of material that is supposed to break yet with time the.
trunnion places do reduce in dimension as a result of the continuous working and also the bearings just wear'' t. fit anymore they end up diminishing which'' s what ' s took place below however these went a little. better than they were expected to as well as they are fairly broken and something I did notice these.
have in fact been repaired before and also the reason I can inform that is there is facilities in the long run of.
the trunnion places that is not a manufacturing facility point that is done from someone doing the specific same.
repair work we'' re concerning to do trying to establish up off a surface area that isn ' t round anymore or you ' ve simply
. bonded can be rather tough so putting a center in each end of the trunnion mounts it'' s really. going to assist with setup and also it'' s additionally going to assist for the next person that needs to repair them so.
you might have seen in a previous video where we'' ve done trunnion place fixings prior to and that was.
due to the fact that we were doing a complete cylinder restore so the cylinder was entirely taken apart and also.
we had the ability to rotate the trunnion in the lathe in between centers however in this case due to the fact that it'' s. still connected to the barrel we can'' t do that so preferably you would establish these up in a device.
like a horizontal borer where you can access both sides after turning around the table I wear'' t. have a straight borer yet as well as I can not use the Kitchen as well as Walker because it is still a job.
in development so we'' re just mosting likely to have to do these in our milling machine so we ' re going. to be utilizing our shopmade v-blocks that have a type in the bottom of those so they find right into.
the table I will certainly then use an edge finder to discover the center of the V blocks which will conserve.
me trying to find the center of the barrel due to the form of the trunnion and also just how high every little thing is.
I am going to have to use one 2 3 blocks in order to load the barrel off the V obstructs so.
the trunnion is not resting on the table as well as because they are all machined surface areas the barrel will instantly.
find the center of the v-blocks if you'' re questioning why I wear'' t. have a v-block established up on each side of the trunnion place that is because this side of the.
cylinder tube is in fact a larger diameter than that side so the bottom end is machined down.
for the trunnion to slip over it when it is made they do not machine the leading side so.
it is a little bigger in size and if I was to have a v-block on this side the barrel would certainly.
essentially be resting a little bit on the piss so currently I'' m just going to utilize an.
alignment facility in order to choose up on the center factor that has been.
drilled right into the end of the trunnion and that'' s simply exactly how very easy it is to. obtain a barrel in the center line of the device when the trunnion place. has that center hole drilled into it since ' s in placement'we ' re mosting likely to. tighten up the clamp so absolutely nothing can relocate the tool we'' re going to be making use of is our.
flexible uninteresting head it does have the outside part of it so we can go on the.
beyond a work as well as the insert we'' re going to be using is a ccgt so I understand.
that does look a little bit shop made I did need to reduce as well as turn the end of the.
tool holder because I didn'' t have the best one for an additional job and also it simply occurs.
to function out perfectly for this also need a bit more off right to make sure that tidied up.
I finished up eliminating regarding a mil off the outer size yet there'' s
not. rather adequate product been removed in order to place a considerable density of.
a weld layer there so I am going to minimize it just a bit extra so the weld.
layer will wind up a bit thicker so of course you could simply bond this up and also.
equipment it back to spec but in my point of view that is cutting a corner I favor to.
device down that surface area so every little thing behaves and also rounded once more and also I get rid of all of.
that dirty material and after that I put a fresh layer of well material there before machining.
it back to spec in this way you have one product around the entire diameter and also you put on'' t. run into hard areas or you wear'' t have a combined match in products as well as their tensile.
toughness to ensure that'' s why I'do it this means right so I ' ve got the OD turned to size. before I turn it over I am mosting likely to spruce up the hole that ' s been pierced right into the end of the.
trunnion place due to the fact that whoever did it prior to me did not utilize a facility drill he simply used a.
jobber drill utilizing a center drill it'' s much less complicated to get them abreast so we''
ll. clean that up and after that we can turn it over so I'' m ready to turn this it'' s mosting likely to be actually.
very easy to establish it up due to the fact that I do have facility openings ultimately of my trunnions if you put on'' t have. center openings there are other ways you can do it one of those techniques is utilizing the screw openings on.
the head flange and a level screw the 2 bolts right into the head flange rest a degree across the top.
of it take the reading on what it is you additionally make use of a tape step from the head flange back to the.
facility point of your tool and also when you turn it over as long as you get the dimensions matching.
up as well as the level comparing it'' s going to be excellent another fixing option would be.
you could device the mounts down small device up a personalized sleeve to after that take.
the place of the initial bearing however that'' s not just how I like to do points I like to place all elements back to an oem specification by doing this.
if any person is to purchase this device later or one more fixing requires to be done they can merely.
acquisition OEM parts off the rack and don'' t have to fret about obtaining anything customized made.
or modified to get their equipment back to work righto men to make sure that is the opposite side.
machined it didn'' t totally tidy up due to the fact that there was a reasonable little bit of wear because particular.
area so instead of reduce the entire size down simply to cleanse that up I'' m going to grind.
that area there and I'' ll just put a little little heavy weld because place if I was to.
device it down so it tidied up that would certainly mean a great deal more welding around the whole.
size and also that'' s simply not essential so'we ' ll obtain this out of the device as well as.
get the other one as much as the same phase to make sure that'' s our 2nd one done we ' re going to take them over to our welding location.
as well as obtain them establish for welding right oh so there'' s a couple of means I can. weld these up I can place them level on a pallet and weld flat across the mount or.
I can stand it up on the trunnion place and afterwards stroll around it and also bonded it up yet.
this moment I wish to try something various so preferably having this in an extra upright.
position and me standing in front of it would be excellent however the device is battling.
a little to rotate it around since one end is a little larger than the various other.
as opposed to damage the equipment I'' m simply going to bond it the method it is I ' m
going. to make use of the forklift tyne as a consistent for my hand to relax on and also I have an added.
long handpiece for my MIG welder so I can stick out of the means this can rotate and.
we'' ll obtain a wonderful even well accumulate so the cord we'' re mosting likely to be using it is er70 S6.
copper free we will certainly be backing that up with Argo Shield Universal which is 80 percent Argon.
10 percent carbon dioxide as well as 10 percent oxygen we'' re running that at around 20 volts.
and regarding 4.7 meters of cord a min righto so that in fact went truly.
really well although it may have looked unpleasant it was actually not too.
bad so let'' s crack on with the rest of them righto to make sure that is our 2nd trunnion totally.
welded making use of the positioner is certainly an excellent way of obtaining uniformity in the.
weld layer I would certainly think of doing a d10 or a D9 would certainly be a great deal a lot more comfortable as well as.
a little simpler due to the fact that they are a shorter barrel so these are far as well warm to.
equipment currently we'' re going to offer them a pair hrs to cool off and also after that we.
get them hold up up in the mill go outside ready hi there whose an excellent boy excellent young boy go on on your bed righto men so the welding has actually cooled.
enough we can get the very first barrel established back up in the milling device and after that we can.
start machining the OD to match the bearing so we are aiming for a 0.1 interference.
fit our finish dimension is mosting likely to be 88.53 which will certainly offer us our 0.1 Crush so I'' m. mosting likely to take a roughing cut so I can get a dimension so we can then figure out how.
much I need to remove to fit the bearing righto so after our very first roughing cut we landed at.
93.8 mil so we'' ve still obtained regarding 5 mil to come off because the tool is hanging.
until now out of the dull head I'' m mosting likely to take each pass at fifty percent mil deepness of cut.
which is one mil general if I attempted to go anymore I would probably finish up splitting.
an insert and obtaining way too much chatter so I'' m regarding to do my last cut yet before.
I go and also change the dull head to the final measurement I am mosting likely to take a springtime pass.
because the device is hanging around up until now it can create tool deflection so instead of over.
suffice or undercut it I'' m simply mosting likely to take a springtime pass at its last dimension I.
will certainly run it down the job a little bit to cleanse up the surface after that I can take.
my dimension as well as adjust it from there our current measurement is 88.72.
we do require to get rid of concerning 0.15 of a mil in order to bring it.
to the crush size for our bush righto so our last measurement come.
out spot on I'' m truly delighted with that said what I'' m mosting likely to do now is change out.
the tool so I can place a chamfer on the leading edge which will serve as a lead for the.
birthing to be fitted onto the trunnion mount and also after that I'' m going to turn it over and.
obtain the various other side up to the exact same stage righto individuals so that is the machining completed on.
our first barrel I still need to tidy up the span in the lower corner of the.
trunnion install however I can'' t do that with the milling maker I put on'' t have the right.
tooling so I will certainly end up doing that with a poly contour wheel on a grinder so let'' s obtain this. one out of the device obtain the 2nd one established up and I'' ve proceeded and finished the.
machining on the second barrel also with all of that done I can currently grind.
up the barrels and install the bearings because we can'' t shrink down the trunnion.
places with fluid nitrogen we do require to broaden the bearing to get.
them to fit so making use of an oven is a nice regulated means to get an also warm.
throughout the entire bearing and also while that'' s warming up we ' re going. to tidy up the lower distance around the trunnion places we ' re mosting likely to be making use of.
a wheel called a poly contour sandpaper goes all over the edge of the wheel and also.
they'' re truly great for cleansing up welds for hand rails as well as lots of various other things they''
re. just a really useful wheel for this kind of work righto so I'' ve tried that twice and it'' s just not going on. to the trunnion mount so I'' m going to give it a bit helpful using.
the oxy and LPG it'' s not going to take much to increase it just a little.
further so it'' ll simply slide right on so that'' s this set finished regrettably the.
client only supplied us 2 bearings there is supposed to be four in order to do both of the.
barrels we wear'' t maintain them in supply so we'' re simply going to grind up the various other barrel ready to go.
and also the consumer will fit the bearings themselves right oh men so the work is provided for about a day'' s. job this has actually been a very cost-effective solution for our consumer and also this repair ought to last as long.
as the authentic components would offering they maintain with their preventative maintenance and change.
out these bearings when they do break these components ought to last the life of the Dozer so.
that'' s another job done thanks for watching right you prepared yeah all set yep you prepared certain.
prepared yeah just and and what wait exactly how am I starting that.
wait what how'' d you begin that ummm hmmm ohh [__] meee [__ ] where'' d I choose that what the [__ ] did I call that await the train to [__] off it'' s [__] off yet in my opinion that is.
a half-assed task that is cutting an edge [air compressor] I'' ll put a bit of a much heavier. weld layer there and afterwards [air compressor once again] I'' ll placed a bit of a ugggh I'' ll pita uh pit. I ' ll pita ohhh PIT [giggling] what. [Karen] hang on that obtained complicated so [mind offline] [Karen] I'require 10 years to edit this I ' m simply gon na say it all once again.
alright prepared yeah [__] yeah that was it size matters [tick tock tick tock] [DING] [GASP] [hissing laugh] [sigh] [BANG] ohhhh [gasp] [Karen went to church] [Karen] what the hell it'' s not on there [giggle] [Karen murmurs] looks like a face [giggle] [Karen whispers] he'' s looking for this [Karen] what color. purple [Karen] how much time. a metre [Karen] so you suggest this. that ' s the one [laughter] [laugh] can you see OH [giggling]
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