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This Cummins Crankshaft Was Almost Scrap Metal...

Mar 22, 2024
of thousands worn out compared to the existing seal surface and then of course here where it's worn out, there's no telling what we'll have there, it's not that bad, yeah, absolutely, actually. Almost better there than where I thought the surface wasn't worn, so now at the back end of the crank we're pretty close. Now let's go down to the main support surface and see what it does in the same way. It has the same. It's kind of a fun dive now let's see how warped

this

crank is, we'll get to the middle here, that's really good.
this cummins crankshaft was almost scrap metal
I was going to say honestly, that all looked pretty good, yeah, it looks pretty good. I was afraid that we might have maybe two or three show up, yeah, at

this

point, but no, you couldn't ask for that to be better and probably what we're reading there is the diary spot, so anyway I'm going to keep going. Go ahead and set it up, I think. Two lunettes here start grinding and see if we can get Mains out. Okay, so I'm going to start with all my loose lunettes, so you're just going to change the Arnold gauge to say yeah, just changing it from our journal raw diameter to the main diameter from the journal in the journal because we are I'm not going to have water there, nor coolant for lubrication, so now I'm going to go to the other Journal, yes, there we are grinding running well and steadily, yes, take it to five, sure, yes , and I'm going to sweep. find the radius of the crank just by touching that radius you can go the other direction, there's that one, so I'm going to go back to the first side right at zero dad, like it could be four four eight zero two or three four four eight zero three where I want these two diaries to be finished.
this cummins crankshaft was almost scrap metal

More Interesting Facts About,

this cummins crankshaft was almost scrap metal...

Now you're supporting the crank there, there, there, there, because you've got them good, so there's plenty of support on the mainnet to keep it running properly and we're ready to go. On this rear main, there's not a lot of room on either side of the wheel, which makes me a little nervous, but we'll figure that out and put some color on it to improve the vision of your setup a little. Yeah, yeah, that's already grinding, okay, now that's removing it. I mean, it goes so fast you can barely see it, but there are some little scratches left there and let's see how much we've removed at that time, about two thousand today. a new day is a new day today is a new day we spent a lot of time yesterday grinding this crank it took a lot longer than normal since we had two or since we were filming it at the same time so anyway we're ready to grind Now, In essence, we are going to polish the stumps in the opposite direction from where they were.
this cummins crankshaft was almost scrap metal
You may not realize that just by looking at this, but the grinding wheel grinds the journals and pushed all the burrs in this direction, pushed them in that direction when We get ready to polish, we're going to put the belt on here and the belt is running and even though the

crankshaft

is turning in this direction, the belt is running in the opposite direction fast enough to pull all those burrs, break a lot of them. Smooth it out and everything that's left is placed in this direction so that when you're on the engine running, the burrs don't dig into the bearings and we're and we're when you say Burrs, we're talking microscopic.
this cummins crankshaft was almost scrap metal
We're talking about microscopic birds, we're not talking, it's not like you can put your finger here and it digs into your finger, no, you can't feel it, you can't see it, it's microscopic, but the bearing material can feel it, yes. The bearing knows it anyway. I guess we're ready to go here. Yes, bearings are smarter than us. Yes. There you have it. I'm going to put on my dust mask because this produces some abrasive dust and iron

metal

. dust thanks so it went down to the snout so you can polish this surface yeah and this surface yeah although that one will probably need a quick sleeve put the sleeve back on but regardless we have to clean uh get the rust and everything else , so it'll be clean when you get ready to put one on this one back here, there's a little bit of wear there, but I wouldn't put a sleeve on it, I think it'll be Better as is, so do you ever pull it in?
Yes, with these gags. I can't, but I have a different set of jaws here that you can pull from the inside out. We have a freshly ground polished Cummins L10.

crankshaft

0.25 millimeters lower in the main network and 0.5 millimeters lower in the connecting rods. Be sure to leave a like and subscribe and I'll see you next time thanks for watching.

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