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Prepare Threads and Remove Broken Chaser

4:05
15:51
30.5K views

At 4:05 in

What Happens at Greg Alberalla's Shop? "Behind The Scenes" of Filming! (Cummins Head Gasket Job)

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What happens here

A critical step in engine assembly is ensuring clean and undamaged threads in the engine block for the head studs. One individual uses a thread chaser to clean out the bolt holes in the block. During this process, a common issue arises: the thread chaser breaks off inside one of the holes. To remove the broken piece, a small nut is carefully welded onto the exposed end of the broken chaser. After a brief cooling period, often assisted by argon gas, a wrench is used to twist and extract the now-grippable broken chaser. This precise welding and removal technique requires skill to avoid further damage to the block's threads.

Goal: Clean and prepare threads in the engine block for head stud installation, and resolve a broken tool.

Tools and materials

  • Engine Block Cummins — The main engine component where threads are being prepared
  • Nut — Welded onto the broken chaser for removal
  • Safety Gloves — Worn for hand protection during welding and handling
  • Thread Chaser — Used to clean and re-form internal threads
  • Welder — Used to weld a nut onto the broken thread chaser
  • Welding Helmet Wrench Workz — Essential eye and face protection during welding
  • Wrench — Used to turn the welded nut and extract the broken chaser
  • Argon Gas — Used to cool the weld and prevent brittleness of the metal
  • Thread Lubricant — Applied to the thread chaser to ease operation and prevent breakage

What they say

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hands of the time lapse? I I don't speak ever. You never? Not unless someone asks you about candy. No, candy comments only. Sour Strips only. I said he doesn't have any speaking roles unless it's about candy. No, no, no. That His His His name is Silent Mike. Silent Mike, if you You've already gotten a couple words out of him today, so like you're already above average for how much he usually talks. He's over quota. He's over quota. He's not going to be able to talk the whole rest of the week. Hey. Hey, Mike, you want some candy? Sour Strips? I'll bring you some from I'll bring you some from Texas. Yeah, uh yeah, we're definitely We're definitely looking for our Sour Strips sponsorship for sure. Michael lives off of sour candy. I guess my video be kind of a mixture of me sucking a bird's nest out of there and what happens behind the scenes of your like nicely put together videos. That's pretty pretty much pretty much behind the scenes at What do you What do you call this place? Greg's house? Pretty much. I mean, The compound. I don't think we're at I don't think we're at compound level yet, but I love the word like compound. You're just Compound pretty serious. Like we're we're in my one little shop. You're just single turbo right now. When you build When you build the other building, that'll compound turbo this building. That'll be your compound. Triples will have to like triples will be the compound. A lot of pressure, Mike. Now, this is his truck, so you just sit here and watch him. Yeah, like so we're working on Michael's truck, so like I'm just an extra set of hands on this project. I'm definitely doing more standing around than normal today. How do you feel about that, Mike? This is This is where he's going to start jabbing me like, "Oh, not much different than any other every other day." Oh, man. Well, we're trying to chase the threads on uh just a bolt hole down, clean them out. Yeah, and then ended up breaking the chaser in the hole. So, for people who don't know what you're doing, you're just welding up a little nub on there so you can reach it with the tungsten to weld the nut to the nut. Yep. The hole in the nut, basically. Been Been there before. It sounds like it. Are you a good nut picker? I was going to let Michael choose what nut size of mine he would like to put on there. Would you like a big nut, a tiny nut, medium-sized nut? What do you feel you can One One with the plans. What do you feel you can handle today? Uh it's pretty good rubber…

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