Removing The Axle Spindle On This Prevost Bus - Liquid Nitrogen Cooling

Removing this axle spindle on this 1980’s Prevost Bus. Using liquid nitrogen to super cool and hopefully help shrink the pressed in part. Working on antique vehicles is never very easy. Removing something this tight after nearly 40 years of time is a big challenge.
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[@billtodd6509]

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.

[@silasmarner7586]

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.......

[@danielmull2178]

A small Styrofoam cooler, or a block of Styrofoam hollowed out. I've used Styrofoam coffee cups with liquid nitrogen, so that should worl.

[@dennisbutler349]

You deserve the patient and creative mechanic of the year award!

[@jamiesuejeffery]

Spindle: $400. Labor: Free. Beers: $1,000 each, and we bought a 12 pack.

[@brynnond.6952]

Why is it always the cheap power packs that sponsor absolutely every KZbinr out there, makes me never wanna buy the junk

[@tonychamberlain8057]

What a bloody pig of a job mate well done

[@SuperSolo67]

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.

[@Thuddster]

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...

[@The_Smith]

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?

[@fatmuscle1]

I used to work a lot with LN2, you'd lose half of it just pouring it into a "warm" container. It would boil off until the container got cold enough to hold it. It will burn the crap out of you as well.

[@brianhobby4559]

What a giant pain in the ass!!!! Good job fellas

[@UlfWolf_Skater]

How many hours did you spent in total? What a mess😮

[@AquesousSolution]

Great creative tooling creation, and use with multiple successive iterations of approach refinement! Makes you appreciate the ruggedness of the original design and your team's determination to complete the repair. It would be interesting to note the mating surface length. I am assuming there is no taper to the axle pin in the mating area where the press fit is. Am I correct?

[@MatthewJorgensen1968]

I guarantee the Liquid Nitro helped break that free...

[@victoryfirst2878]

You are correct with your statement Matt.

[@valvemonky4734]

sorry but no chance did it have any effect on it at all by the time you would have cooled down that shaft to shrink it the rest of the axle housing would be at the same temperature so you would not gain anything

[@victoryfirst2878]

I used the liquid wrench for years. Nice video BGM. So nice to show everyone on KZbin that when an interference fit part needs to be disassembled it can really be a BITCH for sure. Peace vf

[@martinharcourt6256]

AND not a single cuss word, haha. You two have the patience of the saints!

[@danielseelye6005]

The use of an editor program for videos works the same way grinders and paint do for welders. 😁

[@buttondeity3933]

congratulations...its a baby boy!

[@valvemonky4734]

Scott just a warning when you transport you liquid nitrogen in you truck it can be very dangerous in a confined space as when it is boiling of it can reduce the oxygen levels i have worked with large quantities of the stuff for cryogenic testing so i am well aware of the dangers of it this advise might be too late as you might have done the job when the shaft is fully cooled have your copper hammers at hand just in case it started to get stuck and consider heating the axle housing up as well because if it gets stuck half way you wont be happy it looks like it has to go in some distant so have everything ready and at hand i am speaking from experience

[@ytrade469]

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

[@silasmarner7586]

Their work is fantastic. Always they get positive results.

[@jamesmckenzie3532]

That was a lot of work to get it out. I was wondering what woild work.

[@stuinNorway]

I was beginning to think it might need a new part . . "New Bus" 🤣

[@Wayoutthere]

Respect for the utter percerverance.. Id started throwing shit by now and went for a new axle...

[@ChrisHarding-lk3jj]

I don't like using liquid nitrogen because it's a hassle to get and use. I purchased an ultra low temperature freezer instead, my freezer only goes down to -123 F but that's cold enough to provide adequate shrink for what I am doing. For removing the spindle cooling it is not the way to go, you would have been better off heating around the spindle with a torch. A hollow hydraulic ram would have worked good for removal

[@garyolafson8303]

Never imagined bus mechanics would have to rely on Science, Scientist and Chemist's to disassemble parts on an Old Buses

[@SuperMAZ007]

That must be one very fine tolerance if it was so tight in there.

[@unclejoe7929]

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!

[@jamesallen712]

That was a *************************** job. I do hope the new shaft goes in a way easier than the old old coming out.

[@fw1421]

Just imagine how much fun it’s going to be putting it back in. You guys are tenacious!👍🏻👍🏻👍🏻

[@AP9575-jd]

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.

[@twotypetwos]

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.

[@todddammitt1969]

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.

[@creativeloafer9792]

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!

[@dukwdriver2909]

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.

[@Charger1908]

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.

[@danrandall794]

I looked up persistence in the dictionary and it had this video. HOLY CRAP!!!

[@lakshmangoutham2050]

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 🥳

[@danricher9709]

This pin needs a prominent place on the wall of shame... We had to Air-arc out a pin about 5 times the size of this one. It was a two day job.

[@markmonroe7330]

Excellent presentation. Thank you. Looking forward to seeing the new one get installed.

[@boblemon2103]

Cool the spindle, heat the hole and it should go together without tons (lol) of effort, but be quick

[@Jnike8715]

Bet you’re going to have twice as much fun putting the new axle in place.!

[@darangemaster1]

What a cluster! I can’t believe the amount of effort and energy it takes to get that single off

[@markamcampbell5795]

i had to do this on a forest service bus. they did no maintenance on it and seized the bearings on both front wheels.

[@wendellmosley1375]

that spindle almost fell out. ALMOST

[@garyphillips7993]

I think we can see why it was welded up previously!

[@agf1958]

WOW! What a job. Creative thinking.

[@shopdave7489]

One of your best videos ever. Very interesting.

[@rayfitzgerald4180]

Fire and ice what's it gonna take

[@alanminer8841]

This is the definition of making it work

[@Charger1908]

I wonder how hard the new one is going to go in.

[@dennisbutler349]

Time for a beer and the pool!

[@greglinarelli9401]

well now you have a new tool

[@tigerspook1]

Now that was a workout lol

[@landserie3du746]

And the winner is ! !!

[@dennisgardiner43]

Now that was a Fight!!!

[@lorenwillis425]

That was some work!

[@thomasfenlon2363]

congratulations

[@northwoodsguy1538]

Nice job.

[@timf6916]

Wow.

[@phased-out-24-73]

S.O.B.

[@alanlucas2886]

well done both

[@andrewenglish3810]

Finally! :)

[@honorharrington4546]

I wonder if they will be smart enough to use a pipe that clears the threads and sits on the shoulder with a handle welded to the side and a cap welded to the end so when it stops partway in they can drive it home. It was painful to watch them get it almost all the way out and then switch to hammers instead of continuing what worked like they did in the end.

[@BusGreaseMonkey]

We had to reset the jig at the end because we were out of threads on the 7/8” fine thread bolts. The hammers should have been faster at that point. We just wanted to get it out

[@joevet5040]

PROOF! The struggle is real.

[@BusGreaseMonkey]

I didn’t want the video to make it look like it was an easy job ;) i think i succeeded

[@Charger1908]

I wonder if there would be a way to use a plate and a 20 ton hydraulic jack to get the stub axle out.

[@BusGreaseMonkey]

Most hydraulic jacks don’t work on their side

[@belowme4927]

MAKE SURE YOU SEND THE BILL TO THE "DEI MECHANIC" THAT SCREWED IT UP

[@rbryson07]

What? Can you snowflakes get through a day without interjecting your cult bs everywhere

[@buttondeity3933]

dont forget to heat the outside housing first. the combo of cold inner and hot outside will give more space

[@BusGreaseMonkey]

That’s the plan