I have machined and assembled interference fit parts which require both liquid nitrogen and heat to assemble successfully. Had you used a cheap Styrofoam cooler instead of the metal can and then immerse the spindle in the liquid nitrogen and waited until the nitrogen stopped boiling then heated the axel pocket to expand it most likely the spindle would have been easily removed. Chilling the spindle and the axel pocket defeats the purpose of the liquid nitrogen. You do not need to chill the spindle in ice over the weekend. Simply set it into a cheap Styrofoam cooler, immerse the spindle with the liquid nitrogen then put the lid on the cooler and let it chill. When the liquid nitrogen stops boiling the spindle is at the coldest. Before attempting to insert the spindle into the axel pocket make sure the pocket is absolutely clean and free from any burrs. Heat the axel pocket with your torch to expand it. I suggest measuring the inside diameter of the axel pocket with a dial indicator BEFORE heating. Measure it again after heating to see how much expansion you attained. When you attempt inserting the spindle you need to make sure it is absolutely concentric to the axel pocket. When you try to insert it you need to do so VERY QUICKLY as you will find this is a one shot deal. I suggest that you have whatever is necessary for tools ready beforehand in the event you need to assist inserting the spindle with force. If you have enough clearance between the spindle and axel pocket you should be able to QUICKLY push it all the way in until it bottoms out. Once the heat from the pocket starts migrating to the spindle it is going to immediately start to expand. Get yourself some cryogenic elbow high gloves and a full face shield. Also, don't screw around with the little dipper cup, just pour the liquid nitrogen into the cooler. Good luck
@@RH-cv1rg I used a lot oc LN2 at college when I worked the chemistry lab, and we just used a plain cheapo styrofoam cooler. like the 5 dollar kind. We'd leave it in there for hours, between classes, different labs, never had one break or leak. Even dropped one, had it slosh, but didn't break it.
Please do a video introducing your staff (I know one is your son-in-law) and the rest of the team. It would be fun to know who's who! I enjoy the channel! Thank you!
As a 40 year auto mechanic, that was brutal to watch. I definately felt every minute of your pain on that.The bitter sweet relef when it finally hit the floor tho... Good job on the ingenuity and here's to hoping the new one goes in easier.
Just some thoughts. from a metallurgy standpoint I think when using liquid nitrogen it would be important to keep the axle at room temp and only cool the spindle. When they are booth cold you cant utilize the the shrinking effect because they are equalized. Another great video, keep them coming.
Spot-on. As soon as I saw them commenting how the flange was frosty cold too, I was surprised BGM didn't use torches on the backside of the flange (starting around the perimeter, avoiding the flame touching the spindle) to expand it some before pounding on the spindle. There aren't any reliable shortcuts when separating heavy duty press-fit parts like these...
I think it was the few molecules of residue of the kroil oil that worked their way into the joint that allowed the ultimate removal. You had me onnthe edge of my recliner…..
Again I'll say it again you guys are what you call real mechanics you don't miss a hair incredible!! You guys are the real deal 100% keep up the hard work you guys do and the great videos!!
Hey Scott, the last twenty seconds could have the Staples “that was Easy,” button edited in but with the slash across it. Talk about a butchered/botched earlier repair. Super satisfying to finally see movement and oh my that floor clunk! Music to the ears!
What a job!!!! I've used axle surgeon afew times, always on solid semi trailer axles. Never imagined that a 40,000 LB. Bus would ride on a pressed axle. I understand its the tag, but still. Very impressed by the lack of cussing.
A suggestion for next time. Since this spindle has not use any more. You could cut the end of it to a length of a full thick shaft. Drill the center to 1/3 of the diameter of the spindle & tap the hole with a fine standard tap. Using a nut a plate with 2 support set up as a puller you can pull the spindle out of it housing. That is the engineering way of pulling or pressing shafts/spindles in or out of its housing. Hope that helps. Cheers.
It is absolutely frightening what is rolling down the road. I really admire your skills in keeping these vehicles on the road safely. I know you have had some rough weather your way. I've been praying you all are safe. God bless.
I'm glad you got it out that was a tough one. We used to pull trunnion's like that with a hollow hydraulic cylinder and heat the frame you need the difference in temp cool shaft hot mount to get it to move nitrogen cool the new trunnion and it will slide right in after you get the other out with a hot mount.
Just think of the unlucky owner who ruined a spindle out on the highway, got it towed to the first truck travel plaza, then the service manager assigned their top mechanic(who was in charge of the French fry crew at a fast food the month before) to change it out.
@@georgiapatriot4575 You know, when they first start getting going, I had them come to my garage and do a couple axles that were old and worn and wouldn't hold seals. They do great work and have fine tolerances, but getting way over priced to suit me. Ill buy a good used complete axle and change the whole thing over in a couple hours(2 men working on it). They do good work, no doubt about it.
It's amazing how strong an interference fit can be. Make sure you have some way to control your depth, so you don't over or under soot it. You're only going to have a couple seconds to work with. It ain't no fun if it grabs before your set. Trust me.
YES!!!!! so glad to see that thing starting to move. I'm wondering if the first few attempts at super cooling didn't also cool the back plate as well so you weren't any ahead?
That was one hell of a factory press fit to begin with. Hole will need to be machine smooth all round for easy fit of the replacement. You certainly relish a challenge. Great training ground for your assistants.
Just saw the video of you repair this bus with random recommendation and i got intrest how American buses are different from our buses back in India. Loved your videos 🥳
That was an exercise in both insanity and futility. 😆 I hope I never have to have one of the spindles on my Prevost replaced. That looked a LOT more expensive for the labor than for the part! Good luck getting the new one in swiftly!
I used the liquid wrench for years. But assembly of things. Nice video BGM. So nice to show everyone on RUclips that when an interference fit part needs to be disassembled it can really be a BITCH for sure. Peace vf
Ive had a lot of fun with liquid nitrogen, it’s not as dangerous to work with as you think. As long as you don’t submerge your hand in it and leave it there it won’t bother you at all. We drop pigeon eggs in a container of it and let it set for a bit the just reach in and fish it out and then break it on the floor, they shattered like glass. We also froze roses and watched them shatter with a flick of your finger. If you dump some if it across your hand it just flows off because your hand it so much warmer.
Back in my aerospace days we used coolers like Igloo lunch size for our LN2, put the spindle in and cover it with LN2, wait till the boiling stops then it is as cold as its going to get.
Wow. What a struggle. Glad you got it out. I thought you would need an oxygen lance to get it out. I cannot wait to see how you get the new spindle in.
I.dont know if you know of this service in Nashville and surrounding areas they will go anywhere, but THE AXLE SURGEON probably could have repaired that spindle back to factory specs w/nation wide warranty for a fraction of the price and fight yall had to put I to it, love your videos and if you ever have any axle issues give them a call we use them on everything from cranes to dump trucks they have excellent service
Give the spindle bore a hone to get rid of the galled spots that the old spindle made. A bit of heat on the axle, the spindle in LN2 in styrofoam and, if the bore is clean and smooth, it should slide in. Be sure to mark the axle and spindle where you want the spindle indexed, that kinda doesn't matter though.
You needed to put a torch on the back side that the shaft pressed into, so while you shrunk the shaft, you expanded the bore of the bracket that it fit into.
LN2 is great stuff, but something else you can try that's also cheap but easier to manage is dry ice. You could pre-cool with dry ice and then go the rest of the way with LN2. 30 L of LN2 may seem like a lot, but it's not much once you realize how much has to boil away to cool a large part. Then try to chill the spindle while heating the base. Cooling both gets you nowhere. I really liked the puller you came up with. The next time, make a second plate to go behind the welded plate, to push against. Your machinist can easily cut the weld off the plate he made, so you can use it again.
Sweet. Yeah trying to get several tho from that small diameter spindle w just liquid N seams a stretch for some reason. You may need to heat the spindle at least another +300 or more to get a clean drop in. I have no math behind this tho.
In a way this reminds me of an old tractor my dad owned from new during world war 2, some years ago we had to take off a drive axle/diff hub housing assembly due to axle damage and have it pressed out. We took it to a local Hutterite colony where they had a press they had made and estimated it was at least a 100 ton press. No way would it press that axle cold but things were flexing on the press and so we heated with two rose bud torches on the hub and boy oh boy, it let go and with the flex in the press bed it was a shit yourself moment 🤣. By the way I find it helpful to use copper coat with a bit of gear oil in a blend onto threads that I am forcing as it reduces the friction and the chance of the threads starting to gall, I have used that on bolts, suspension ubolts and puller threads, admittedly its messy but it does reduce friction a fair bit while saving threads from damage.
AND not a single cuss word, haha. You two have the patience of the saints!
The use of an editor program for videos works the same way grinders and paint do for welders. 😁
You deserve the patient and creative mechanic of the year award!
Determination from Hell. Impressive.
All I can say is after watching this mighty struggle, you guys have taught me the fine art of PATIENCE when I go to work now. Holy crap!
I have machined and assembled interference fit parts which require both liquid nitrogen and heat to assemble successfully.
Had you used a cheap Styrofoam cooler instead of the metal can and then immerse the spindle in the liquid nitrogen and waited until the nitrogen stopped boiling then heated the axel pocket to expand it most likely the spindle would have been easily removed. Chilling the spindle and the axel pocket defeats the purpose of the liquid nitrogen.
You do not need to chill the spindle in ice over the weekend. Simply set it into a cheap Styrofoam cooler, immerse the spindle with the liquid nitrogen then put the lid on the cooler and let it chill. When the liquid nitrogen stops boiling the spindle is at the coldest.
Before attempting to insert the spindle into the axel pocket make sure the pocket is absolutely clean and free from any burrs. Heat the axel pocket with your torch to expand it. I suggest measuring the inside diameter of the axel pocket with a dial indicator BEFORE heating. Measure it again after heating to see how much expansion you attained.
When you attempt inserting the spindle you need to make sure it is absolutely concentric to the axel pocket. When you try to insert it you need to do so VERY QUICKLY as you will find this is a one shot deal. I suggest that you have whatever is necessary for tools ready beforehand in the event you need to assist inserting the spindle with force.
If you have enough clearance between the spindle and axel pocket you should be able to QUICKLY push it all the way in until it bottoms out. Once the heat from the pocket starts migrating to the spindle it is going to immediately start to expand.
Get yourself some cryogenic elbow high gloves and a full face shield.
Also, don't screw around with the little dipper cup, just pour the liquid nitrogen into the cooler.
Good luck
Cool! 😎
Don't use styrofoam for more than a few minutes. The product shrinks and the Liq NO2 seeps into the foam.
@@RH-cv1rg ... and?
@@kleetus92 The container can collapse dumping the NO2. Not a problem unless it dumps on YOU.
@@RH-cv1rg I used a lot oc LN2 at college when I worked the chemistry lab, and we just used a plain cheapo styrofoam cooler. like the 5 dollar kind. We'd leave it in there for hours, between classes, different labs, never had one break or leak. Even dropped one, had it slosh, but didn't break it.
Please do a video introducing your staff (I know one is your son-in-law) and the rest of the team. It would be fun to know who's who! I enjoy the channel! Thank you!
Wow! That spindle DID NOT want to come out! Great effort, work and intestinal fortitude to get that baby out! Hard work for you both!
What a bloody pig of a job mate well done
I remember you guys talking about the one little bolt holding it on, now we know that's all it needed.
😂😂😂😂
As a 40 year auto mechanic, that was brutal to watch. I definately felt every minute of your pain on that.The bitter sweet relef when it finally hit the floor tho... Good job on the ingenuity and here's to hoping the new one goes in easier.
Just some thoughts. from a metallurgy standpoint I think when using liquid nitrogen it would be important to keep the axle at room temp and only cool the spindle. When they are booth cold you cant utilize the the shrinking effect because they are equalized. Another great video, keep them coming.
Spot-on. As soon as I saw them commenting how the flange was frosty cold too, I was surprised BGM didn't use torches on the backside of the flange (starting around the perimeter, avoiding the flame touching the spindle) to expand it some before pounding on the spindle. There aren't any reliable shortcuts when separating heavy duty press-fit parts like these...
Was also incredibly surprised at seeing this.
Also will probably help putting the new spindle in. Heat the axle in addition to cooling the spindle.
I think it was the few molecules of residue of the kroil oil that worked their way into the joint that allowed the ultimate removal. You had me onnthe edge of my recliner…..
Absolutely good!
Again I'll say it again you guys are what you call real mechanics you don't miss a hair incredible!! You guys are the real deal 100% keep up the hard work you guys do and the great videos!!
Will Power was sure looking over ya shoulder guys, great effort with this bro. Safe travels. Ken.
Hey Scott, the last twenty seconds could have the Staples “that was Easy,” button edited in but with the slash across it.
Talk about a butchered/botched earlier repair.
Super satisfying to finally see movement and oh my that floor clunk! Music to the ears!
People wish they could find mechanics with this level o skill and dedication.
Scott you have a GREAT worker Johnathan he takes 90% of your load, he keeps on going & doesn't give up. Watching from Calgary, Canada
Their work is fantastic. Always they get positive results.
What a cluster! I can’t believe the amount of effort and energy it takes to get that single off
Wow...heck of a trip in the "struggle bus." No pun intended as this was really a tough one. Well done gents...well done.
That's the right spindle, I wanted you to replace the left spindle!
Nice RBI Jon. Hitting home runs constantly
Your persistence is amazing. That job looked awful.
What a giant pain in the ass!!!! Good job fellas
Egor, you're doing a magnificent job!
What a job!!!! I've used axle surgeon afew times, always on solid semi trailer axles. Never imagined that a 40,000 LB. Bus would ride on a pressed axle. I understand its the tag, but still.
Very impressed by the lack of cussing.
Now if I ever see an axle spindle again it will bring back memories.
I'm waiting to see how you press the new spindle back on the axle.
A suggestion for next time. Since this spindle has not use any more. You could cut the end of it to a length of a full thick shaft. Drill the center to 1/3 of the diameter of the spindle & tap the hole with a fine standard tap. Using a nut a plate with 2 support set up as a puller you can pull the spindle out of it housing. That is the engineering way of pulling or pressing shafts/spindles in or out of its housing. Hope that helps. Cheers.
Liquid nitrogen and mechanical work mixed together. How could i not watch this amazing video? Great job gentleman.
What people do in repairs is so sad in the name of safety 😢😢😢 Glad your repairing it properly 😊😊😊
It is absolutely frightening what is rolling down the road. I really admire your skills in keeping these vehicles on the road safely. I know you have had some rough weather your way. I've been praying you all are safe. God bless.
A small Styrofoam cooler, or a block of Styrofoam hollowed out. I've used Styrofoam coffee cups with liquid nitrogen, so that should worl.
Just imagine how much fun it’s going to be putting it back in. You guys are tenacious!👍🏻👍🏻👍🏻
Holly cow. What a job. I pray I never have to do such a thing. 😂 if I have to I hope I’m near your shop lol😂wow
I looked up persistence in the dictionary and it had this video. HOLY CRAP!!!
Incredible perseverance, amazing work and great video!!! Thank you, Scott and Jonathan!!
What a job! Thanks for the video.
this reminds me of why i spent my life in the automotive trade instead of busses and heavy equipment like I had originally planned
Good job! I hate these problems where it looks totally futile unless you already know what you are doing. That sure did get a beating and then some.
Great video. Thanks for making it.
One of your best videos ever. Very interesting.
Might also look into a Plumbing tool that freezes pipes. It is used to freeze two points and repair in-between the freezes. As a pre-cooler.
Definitely looked like a tough job. Very clever thinking
Excellent presentation. Thank you. Looking forward to seeing the new one get installed.
I'm glad you got it out that was a tough one.
We used to pull trunnion's like that with a hollow hydraulic cylinder and heat the frame you need the difference in temp cool shaft hot mount to get it to move
nitrogen cool the new trunnion and it will slide right in after you get the other out with a hot mount.
Science Maximus 🤓 the anticipation on the 37 min video was intense 😳 I can imagine how much more it was in the shop 😮
Just think of the unlucky owner who ruined a spindle out on the highway, got it towed to the first truck travel plaza, then the service manager assigned their top mechanic(who was in charge of the French fry crew at a fast food the month before) to change it out.
I'd send them a link to this video and the one before, and send them a bill DOUBLE their normal rate. What utter blithering idiots. SMH.......
They would call the Axle Dr. to come and it would cost over $1000. Happened to youtuber JustTruckin on his semi trailer.
@@georgiapatriot4575 You know, when they first start getting going, I had them come to my garage and do a couple axles that were old and worn and wouldn't hold seals. They do great work and have fine tolerances, but getting way over priced to suit me. Ill buy a good used complete axle and change the whole thing over in a couple hours(2 men working on it). They do good work, no doubt about it.
Getting that shaft off reminded moi of the movie "5 Million Years to Earth" When thay tried to Drill into thê Aliên Space-Ship
Wow what an ordeal, thanks for taking us along!
It's amazing how strong an interference fit can be. Make sure you have some way to control your depth, so you don't over or under soot it. You're only going to have a couple seconds to work with. It ain't no fun if it grabs before your set. Trust me.
This is the definition of making it work
I know those spindles are a force fit but that’s just ridiculous. 👍😎
YES!!!!! so glad to see that thing starting to move. I'm wondering if the first few attempts at super cooling didn't also cool the back plate as well so you weren't any ahead?
Really enjoying your channel!
Bet you’re going to have twice as much fun putting the new axle in place.!
I predict we'll see the use of heat on the axel AND cold on the spidle (spidal) before this is done. . . My 2 cents.😁
Respect for the utter percerverance.. Id started throwing shit by now and went for a new axle...
That was one hell of a factory press fit to begin with. Hole will need to be machine smooth all round for easy fit of the replacement. You certainly relish a challenge. Great training ground for your assistants.
Just saw the video of you repair this bus with random recommendation and i got intrest how American buses are different from our buses back in India. Loved your videos 🥳
That was an exercise in both insanity and futility. 😆 I hope I never have to have one of the spindles on my Prevost replaced. That looked a LOT more expensive for the labor than for the part! Good luck getting the new one in swiftly!
WOW! What a job. Creative thinking.
I used the liquid wrench for years. But assembly of things. Nice video BGM. So nice to show everyone on RUclips that when an interference fit part needs to be disassembled it can really be a BITCH for sure. Peace vf
You guys went to war with that spindle.
Great !!!! Job Guys🏁!!!
Wow, you are much more persistent than I am.
Ive had a lot of fun with liquid nitrogen, it’s not as dangerous to work with as you think. As long as you don’t submerge your hand in it and leave it there it won’t bother you at all. We drop pigeon eggs in a container of it and let it set for a bit the just reach in and fish it out and then break it on the floor, they shattered like glass. We also froze roses and watched them shatter with a flick of your finger. If you dump some if it across your hand it just flows off because your hand it so much warmer.
I just found myself clapping when that spindle from hell fell off
Back in my aerospace days we used coolers like Igloo lunch size for our LN2, put the spindle in and cover it with LN2, wait till the boiling stops then it is as cold as its going to get.
Wow. What a struggle. Glad you got it out. I thought you would need an oxygen lance to get it out. I cannot wait to see how you get the new spindle in.
How many hours did you spent in total? What a mess😮
Why is it always the cheap power packs that sponsor absolutely every RUclipsr out there, makes me never wanna buy the junk
That was a little bit of a challenge!
Better than watching paint dry!
Rose bud for the win
What a suspense video
Adventures Made from Scratch, RUclipsr, has a 1950 Greyhound he wants to sell. Takecare Sir and I enjoy your informative videos.
Nice job.
congratulations...its a baby boy!
And he’s a hard one!
With all that liquid nitro, you could also run a remove-your-own-wart(s) clinic. Although I wouldnt really advise it.😂
Holy smokes, that was a mothe… lt did not want to depart.
I thought the video was going to be a “look what we tried”. What a learning experience!
That’s amazing how that stuff works like that..
I.dont know if you know of this service in Nashville and surrounding areas they will go anywhere, but THE AXLE SURGEON probably could have repaired that spindle back to factory specs w/nation wide warranty for a fraction of the price and fight yall had to put I to it, love your videos and if you ever have any axle issues give them a call we use them on everything from cranes to dump trucks they have excellent service
Hard work but it's off well done men
That trophy better go up on the wall of a podium
Put that trophy on the wall!
Installation of the new one would scare me to death.
Give the spindle bore a hone to get rid of the galled spots that the old spindle made. A bit of heat on the axle, the spindle in LN2 in styrofoam and, if the bore is clean and smooth, it should slide in. Be sure to mark the axle and spindle where you want the spindle indexed, that kinda doesn't matter though.
Omg what a battle good job
well done both
You needed to put a torch on the back side that the shaft pressed into, so while you shrunk the shaft, you expanded the bore of the bracket that it fit into.
love this stuff!
well now you have a new tool
And the winner is ! !!
LN2 is great stuff, but something else you can try that's also cheap but easier to manage is dry ice. You could pre-cool with dry ice and then go the rest of the way with LN2. 30 L of LN2 may seem like a lot, but it's not much once you realize how much has to boil away to cool a large part.
Then try to chill the spindle while heating the base. Cooling both gets you nowhere.
I really liked the puller you came up with. The next time, make a second plate to go behind the welded plate, to push against. Your machinist can easily cut the weld off the plate he made, so you can use it again.
That was a *************************** job. I do hope the new shaft goes in a way easier than the old old coming out.
Victory!
congratulations
That was some work!
Sweet. Yeah trying to get several tho from that small diameter spindle w just liquid N seams a stretch for some reason. You may need to heat the spindle at least another +300 or more to get a clean drop in.
I have no math behind this tho.
now heat the back end to open up the bushing hold
In a way this reminds me of an old tractor my dad owned from new during world war 2, some years ago we had to take off a drive axle/diff hub housing assembly due to axle damage and have it pressed out. We took it to a local Hutterite colony where they had a press they had made and estimated it was at least a 100 ton press. No way would it press that axle cold but things were flexing on the press and so we heated with two rose bud torches on the hub and boy oh boy, it let go and with the flex in the press bed it was a shit yourself moment 🤣.
By the way I find it helpful to use copper coat with a bit of gear oil in a blend onto threads that I am forcing as it reduces the friction and the chance of the threads starting to gall, I have used that on bolts, suspension ubolts and puller threads, admittedly its messy but it does reduce friction a fair bit while saving threads from damage.
Spindle: $400. Labor: Free. Beers: $1,000 each, and we bought a 12 pack.