Liquid Nitrogen Axle Spindle Replacement, inserting the new stub on the Prevost Bus

[@garyfeltus9801]

That was cool the spindle just slid right in . I had to watch it twice lol..

[@stevenrobinson2381]

Butter. Said "buttah......."

[@quantumleap359]

My Dad was a Federal Mogul and Bower and BCA warehouse jobber back in the 40s through the 80s. I helped at the shop, saw a lot of bearings go out the door along with Trostel seals and EIS hydraulic parts. I just love this channel, your theme song ought to hit the Hot 100 chart! You guys know how to make these buses roadworthy and safe.

[@ram50v8]

@quantumleap359 EIS is a name I have not heard a quite a few years. Most people in the trades thing Raybestos and others when I comes to hydraulic brake parts and not EIS

[@steamfan7147]

Scott, that went pretty slick, we do a lot of shrink fits at work. One thing to watch out for, too much heat, too fast can actually leave you with less than the maximum expansion. On low and medium carbon steels we top out at 500-550 F(violet/blue color)and once at that temp, we let the part soak for a few minutes to make sure the whole part is saturated, if you heat a bore like that too fast and too hot, the steel expands through it's thickness almost as much as it does along it's circumference. So instead of getting the .008-.010" you need, you end up with .005-.006" which might lead to a stuck part. Another advantage, is if the part you are heating has a heat treat, the 550-600 won't affect the heat treat , where the 1450 dull red will.

[@stanwooddave9758]

Temp{erature} Sticks---Temp-Sticks--Temp Sticks. ALWAYS AVAILABLE welding supply stores {less than $10.00 each} range I believe from 450 {232.2 °C} degrees up to 1.100 {593.33 °C} (maybe 1,200 /648.88°C ) degree's. How to use, when heating an object, just draw a small line (length up to operator) if the line looks waxy (needs more heat,) if when drawing your line looks wet (water-like) your up to temp. STOP CONCENTRATING the heat to one area, move your torch A LOT MORE. You always seem to be heating one area needing heat and hope and praying for HEAT SATURATION to the rest of the object. HEAT EVENLY!!!!!!!!!! Get some "Telescoping- SNAP - GUAGES." (used to measure inside diameter of a bore / cylinder.) Stop farm engineering (GUESSING) KNOW YOU DIMENSIONS, measure 12-6 O'clock, then 9-3 O'clock, measure with a micrometer, not a guess-o-meter calipers. Yes calipers will get you close, but not on the money most times.

[@romandybala]

Great job. I spent my working life driving trucks and doing this sort of work on the weekend to get me going the following week. I hated all the bashing and grease and dirt and busted knuckles but I really enjoy watching your videoes . Funny isn't it? One thing ,I think there might be others, who wished you had clocked that flat surface on the stub axle at 12 o'clock. Greatings from Melbourne Australia

[@lateefcarrere1649]

After watching the war you waged to get the old spindle out, I know both of you wanted to yell at the top of your lungs in triumph when the new spindle slid right in. Awesome job!

[@heatherkohlwey8379]

That spindle was going to come out one way or another. The situation had gotten personal. At least the new one went in easily. You do amazing work.

[@bnelson313braveheart]

Wow…it slid in nicely! The new parts look so clean and safe.

[@tezskanza]

3:14 - one of the most satisfying moments on KZbin after watching the removal video!

[@rwamchubb7977]

When I drove a school bus, I just happened to see the cost of 2 drums and shoes for my bus. I nearly crapped myself. I look forward to watch your videos.

[@BusGreaseMonkey]

2 drums, linings and hardware for two hubs, two seals, two gaskets complete bearing sets and races just over 2k. That includes shipping that was not cheap

[@Andy_Novosad]

That slick installation was a karmic redeem for the troubles with pulling that spindle out.

[@tsbjelland]

The word is "karmic" but your point is true, nevertheless.

[@Andy_Novosad]

@@tsbjelland My bad, I'm not a native speaker.

[@jamesallen712]

That went back together so much easier than it did coming apart. Shocked you being so easy with that thump when it hit home. Good job guys.

[@northwoodsguy1538]

Nice work. Glad to see your liquid N2 and heat worked to slide that beautiful new spindle into it's new home.😎

[@patmx5]

Wow - that installation was anti climactic after the epic battle you went through to get the old one out!! Like so many things, it’s the prep work that takes all the time and effort. Nicely done!

[@creativeloafer9792]

Terrific work fellas! Just incredible as beautiful as this coach is, the condition of the axles was a complete mess. Superb video documenting the coach getting the love it deserves!

[@Spinnaker617]

Once again...... beautiful work BGM! I have watched for several years and I used to believe that there were occasions where you could benefit from a lathe mill and OD grinder but I was wrong....where parts can be sourced new it's always best (liability) to source them new👍 Excellent work once again and I really enjoy your videos.

[@marcrab]

That went in easer than I thought it would! You guys are awesome ✌️

[@who2u333]

After seeing that spindle extraction, I understand why the last mechanic just welded and ground the old one instead of replacing.

[@manatee419]

That's no excuse for anybody to do. A 1/2 a** job if you're not gonna do something right?Don't touch it.

[@shane_smith_]

​@manatee419 that was 1/4 a$$ job. Lol

[@stevenrobinson2381]

Because they were completely ignorant on how to perform it THE CORRECT WAY .

[@Cemi_Mhikku]

@@shane_smith_ It was a hank hill butt-tier job. And as you may recall.... he has negative booty.

[@pdxRetired]

Fun to see that new spindle slip into place with no fighting. All the work to get the old one out, and so easy to get the new one in. Thanks for the video!

[@dennisbutler349]

Success! I get a lot of satisfaction out of watching you solve hard to solve problems. I think this is my favorite.

[@michelbrodeur6055]

Nothing more to add, great way to install the new shaft and I'm sure you two did a Happy Dance after. Thanks for the video.

[@jimhaines8370]

NTN bought the Bower and BCA names from Federal Mogal and have returned to USA manufacturing where BCA and Bower under Federal Mogul had gone to all low cost and poor quality imports. All three brands of NTN are quality now and made in the US or Japan for most bearings they make and sell

[@12v71detroit]

I thought NTN stood for not to noisey

[@moshebron2105]

WOW!!!! Gotta love when a plan works flawlessly. Nice work.

[@donw3912]

i am guessing in real time that spindle removal was several hours of wrenching and everything else. Then the replacement goes in in the blink of an eye...That was funny/happy to see as i was expecting a fight a bit too. Your backup plan was a good one too I think Scott! What an ordeal!! Two thumbs way up guys!!

[@sheldonhall4572]

The last video you struggled so much on removing the old mangled spindle made it all the more satisfying when the new one popped right in place without an issue. That custom pulling plate is gunna make your life way easier in the future if you ever have to do more of them. Great job guys!

[@tomhamilton9816]

You guys always manage to work your magic!! Amazing work as always!! Love the video ❤!

[@fabiodriven]

That's exactly what I would have done with the brakes too. New stuff on the steer then move the good used stuff to the tag.

[@hasletjoe5984]

Great "How to Video"! Thank you Scott and Jonathon. Loved it.

[@wesleypulkka7447]

Scott, perfect reinstall on the stub axle! What a job to get the old one out! But you prove every time that persistence pays! Congrats!

[@Charger1908]

We have a bearing factory right here on the outskirts of Pittsburgh in a place called RIDC Park, it’s an industrial complex. I have been in there a few times getting bearings for our rapid prototype machines when I worked. They said I could bring in a bearing and they probably have it in stock. It’s called Bearing Supply Services.

[@rodkennedy9800]

Hi Busgreasemonkey. Been meaning to say I used to be an engineer and we got a tool that heated up bearings etc (on the bench) by use of electrical induction coil. Think they were pretty expensive back in the day but well worth the money…expanded anything circular without leaving a mark. Just a suggestion!!!

[@tombeilman5579]

A lot of shops won’t even use a torch let alone liquid nitrogen, you make it look easy. I can make some nice rubber bushing fires with a torch

[@gtr1952]

That axle sliding in there like that was the coolest thing I've seen in a long time!! Congrats and well done!! 8) --gary

[@13699111]

Excellent coverage of the repairs thank you

[@alexthedude]

Beauty coach, eh. After seeing this I think I would make the flat spot level before putting the axle in the hole and press in hard on the axle until it warms up and friction locks into place. But without seeing this video I would not have thought about that, so thanks for the video.

[@lazman111]

As I’ve done my share of press fits in machinery, I have to tell you how happy to see you win…lol.. I’ve had a few failures, so I know exactly how much joy you must’ve felt too.

[@toma5153]

Nice to see that spindle fit right in. On some manual transmission work I've done I put shafts in the chest freezer (about minus 10) and wrap a bearing in foil and let it soak in the oven at 200F. If you work quickly the parts slips together easily. Your spindle removal was gonna start an earthquake. Those type of situations are scary if things suddenly fly apart.

[@woody95124]

Man tht thing just went in like butter!Good job guys

[@boblemon2103]

Wow, effortless, it slid right in, love it when things work the way they are supposed to.

[@Chellz801]

New to the channel been watching your last few vids on this bus and man! This thing has been a nightmare of labor but sometimes you gotta get creative when the mechanic before you decided to just sh*t the bed. Keep up the good work, love the channel!

[@capeway07]

Obsessed with this coach. Keep up the awesome work. Love it.

[@davidholder3207]

The replacement was darn easy. Well done.

[@ram50v8]

Scott, some thing I was going to mention in the last video was if you considered tapping the bolt hole in the axle housing for a grease fitting and use a grease gun to assist pushing out the old spindle? I have done that in the past in combination with a puller. Not sure the diameter of that spindle where it presses into the housing but say it is a 2" spindle, at 15,000 psi on a grease gun you would have 23.5 tons of push pressure. Something to keep in mind for the future.

[@BusGreaseMonkey]

Big hole in the back for a bolt

[@jamestsmith4500]

I doubt that having a grease fitting in the spindle would push a shrink fit ( interference) spindle out. The "custom made" puller that the guys made, was the only way. I'm sure the factory had a special puller designed for that job.Maybe the tool was only available at certain garages. You may have had to even special order it from a puller manufacturer.

[@ram50v8]

@@jamestsmith4500 Not a grease fitting in the spindle, you install the fitting in the back where the retaining bolt was. (Although many pins are not thru hardened so yes you can drill thru the center of the pin and do this) I am guessing you have never had to remove a pilot bushing from a crankshaft on a manual transmission vehicle. We would use grease or just plain white bread (sunbeam works best) and pack it into the hole. The using what ever was handy that fit this inside diameter of the bushing, put it in place and hit it with a hammer. You may have to add more grease or bread but it definitely works. This trick was taught to me over 40 years ago and it had saved my bacon on many blind hole pins and bushes over the years.

[@jamestsmith4500]

@@ram50v8 Done that many times but a pilot bearing isn't the same press fit as the spindle they were working on. Interference press fit you have to use a shrink fit method such as using liquid nitrogen which isn't needed for pilot bearings in a flywheel.

[@jamiesuejeffery]

Itemized bill: Parts: $500. Labor: Free 12 pack of beer: $1,000.00 ea Total: $12,500.00.

[@BusGreaseMonkey]

Parts and labor was less than the quote for having the mobile axle repair service come and fix it.

[@larryschmidt977]

The way that spindle went in was like the old guys used to tell me. Its just like a sore peter. You can't beat it🎉

[@charlesb4267]

I have to say those drums they use are a work of art ( other than having to use the flat head screws to center the drums ) compared to a typical tractor/trailer drum. I imagine they have a very lovely price attached to them due to the fluted design and that they are for older becoming obsolete wheel ends.

[@vorsprungdurchtech]

That liquid nitrogen is some good stuff, I see Cutting Edge Engineering using it a lot, it’s a great tool.

[@stevenrobinson2381]

Nice. "I love it when a plan comes together........."

[@edwardmyers1746]

Got to love when things go to plan.

[@timwatson3879]

...I may be just spitballin' here...but NEW stuff looks GOOD!

[@robertgriffin7569]

l wasnt expecting that axle to slide right in there. lol. Great job.

[@JohnSmith-qi9qs]

Cool. Physics still works!

[@losttoolsgarage1043]

Nice like a glove!

[@lgun1]

That new one was so much easier to install than the old one was to get out.

[@j6sj7]

That thing slid right in there, slick as snot! Well SOMETHING had to go right with this job.

[@timf6916]

Wow, Great work.

[@brianhobby4559]

LOL That went on slicker than snot! NICE.....aint that the way it always goes hard to get off easy to get on .....

[@danrandall794]

Holy shit is right. Just like Christmas morning.

[@justinmize4316]

I know where the old David Alan Coe tour bus is. Heard it run the other day. Filled with so much Country memorabilia, signed autograph pictures. Needs restoration. Guy will sell it. Has 6V71 in it.

[@Thomtleonard]

Nice job

[@AquesousSolution]

Absolutely slick!

[@johnmilner6484]

Smooth like butter!!

[@dttprice]

I like the new theme video.

[@marinablueGS]

That was slick!

[@richardmead9225]

I believe those flat head screws also come in socket head. I worked at a place that mounted rotating knives with socket head flat head screws.

[@johnnyhunter4345]

gorgeous!

[@lloydrobinson7081]

keep the clips coming

[@craigsowers8456]

Just an FYI for the future: NEVER strike anything that's been flash frozen with Liquid Nitrogen ... it'll shatter internally. Good job guys !

[@BusGreaseMonkey]

It was instantly warmed plus the striking end was not in the liquid nitrogen

[@donlum9128]

Excellent

[@davidgoodwin5808]

Now that’s a money shot!

[@elderrider9298]

Yep rose bud for the win

[@nascar427]

Wow, what a job, and a great job. Were you impacted by Helene? Prayers to all the folks that were/are affected by it.

[@galegregory341]

Yeah I seen that he liked it fell into the bus when he pushed it in there when you have been great people to pull out with the puller the first time

[@grabasandwich]

Looks fun 😂

[@misterheadache]

That was the McDLT of repairs.

[@vayabroder729]

Such hard work to get the old one out! My God! Question: does it weaken the metal heating it up like that?

[@notyou6950]

Nice!

[@ianjay5301]

Wow. Not even a gentle tap! Impressive.

[@BusGreaseMonkey]

I didn’t want to get me hopes up so the backup plan was ready

[@brianlivingston7303]

All my years of working on coaches in a major city transit system I have only witnessed one replacement of this pin!!! We didn't have liquid nitrogen just heat-heat-heat!!! Great job guys , this job is a royal pain in the tuchus!!! Had to keep it family friendly 😅😅😅😮..Love watching your videos!!!!

[@MrPhotodoc]

What is the effects of heating and cooling the different metals on the temper or strength of the axle and spindle?

[@BusGreaseMonkey]

It’s a very strong pairing.

[@cattlerepairmancattlerepai9414]

Since this is the factory method of assembly, I would strongly suspect that this has been taken into consideration. Heating generally reduces temper; supercooling generally increases it (see cryo treatment of brake discs)

[@carlv8168]

@@BusGreaseMonkey You and Jonathan did an excellent job exceeding the challenge of removing that old stubborn spindle. It's no wonder that the last mechanic who laid hands on this jury-rigged the spindle with such crude (and totally unsafe) methodology. Another job well-done, Scott. I've watched a lot of your videos, and this had to have been the worst, most difficult challenge I've seen you guys face.

[@timjohnun4297]

Seems crazy that the only thing holding this spindle in, is an interference fit, but hey, I guess it works

[@katolight]

@@timjohnun4297there was a bolt hole on the backside of the spindle to hold it in place once the spindle was pushed in. It’s going nowhere.

[@10intexas]

I am sure someone may have asked this before but...why do they not use the "Torx" style screws instead of a phillips or flat blade screw on the brake drums? I understand the "Torx" were not available at the time the bus was built but as a replacement it would seem a lot easier to tighten and remove them.

[@ram50v8]

Honestly, the screw is just to hold the drum in place so it does not fall off when the wheel assembly is not in place. Due to the small size of the screw threads, it really has little effect since it can be easily sheared off should the wheel come loose.

[@larrywalker7759]

@@ram50v8 In this bus application the screws are for centering the drum concentric to the hub. The hub and drum are not hub piloted to center the drum. It is a poor design because like you said, if a wheel gets loose, the braking forces bear on the screws and shear them off. If/when that happens you still have to replace the screws to center the drum to the hub.

[@The_Smith]

that went well,

[@jamesleonard795]

Where do you get liquid nitrogen

[@camshaftprelube]

How do you set the rosebud to keep it from popping and blowing out the flame?

[@oldblueaccord2629]

Actelene first then feed in the O2.

[@htroberts]

why is part of the spindle milled flat?

[@BusGreaseMonkey]

To lock the bearing adjustment in place so it can’t back off.

[@ianjay5301]

I like the song and pictures at the end. I was reading about the SceniCruiser and how the early ones used two 4V 71's with a viscous coupling. A nightmare equal to that wheel stub. Does yours have the 8V 71?

[@BusGreaseMonkey]

They all got converted to 8v. None remained with the twin 4’s

[@larryschmidt977]

Hope y'all honed the hole out

[@donh6416]

I would have measured the depth and marked the spindle for reference to ensure you had it fully seated.

[@BusGreaseMonkey]

It had a mark and it was fully seated and clunked when it hit the back as well.

[@admranger]

Physics works.

[@abpsd73]

After seeing what it took to extract the old spindle, I'm surprised how easily the new one almost fell in there.

[@jamestsmith4500]

The use of liquid nitrogen shrinks metal at least 0.002 to 0.004 in. depending on the temperature change.

[@markrenton1093]

did the new spindle have a hole drilled in the end , if not you did not shrink the spindle because if there were not a hole in the end the material would no place to shrink .

[@bobhaddock957]

how much did the jug of liquid nitrogen cost ?

[@LORFCASTER]

Id be very happy supporting made in USA OR made in Japan parts.

[@gersonhay984]

After fighting the Spindle, That was anti Climactic. You needed a Easy one.

[@br33tt]

A tight fit? That puppy was in there.

[@davidowen888]

Almost good tuh go ☮️

[@hodgepodgeoffroad3082]

😂😂😂 went on so easy. Ha ha ha. Thank goodness

[@randyphilbert]

👍🏾

[@billtodd6509]

Just wait until the first road test. I ll bet you will be able to leave your hands off the steering wheel and it will come to a dead straight stop with all those new brakes and foundation parts.

[@cattlerepairmancattlerepai9414]

That was...cool! See what I did there?

[@markamcampbell5795]

how much did all these parts cost?

[@garyharrington5300]

Nice work ,but I would leave them screws out on the drum ,all your newer stuff has left that technology and hardly changed anything

[@larrywalker7759]

No, you can't leave out the centering screws on this application. That hub and drum are not self piloting (meaning that the drum and hub do not have matching alignment pilot provisions). Those countersunk screws and the matching counter bores of the drum are what centers the drum to the hub.

[@romandybala]

@@larrywalker7759 I think the drums set on the hub as a pilot. Those screws are way too small to support the drum as a centering method.

[@charlesb4267]

@@larrywalker7759 Thankfully ( or so I think ) they went away from the stud piloted ( by way of the lug nut system ) and went hubcentric for both the drum and wheel, never mind a left hand set of threads on everything on the left side of the vehicle.

[@larrywalker7759]

@@romandybala In this particular application those screws are what centers the drum to the hub. You can see that the drum did not fit evenly around the wheel studs when they set the drum in place. After the screws get the drum centered, the wheel lug clamping force is what holds the drum in place. This was a poor design because if your wheel lugs ever got loose enough to allow the braking forces to bear on these centering screws the screws can shear off.