How to use a Torque Multiplier - You will want one of these!

How to use a Torque Multiplier. This video is intended for students in my manual drivetrain and automatic transmissions classes as well as anyone who is interested in basic precision measurements.
TIMELINE:
0:00 Introduction
0:18 Delivering high amounts of torque
0:58 Warning against the use of impact guns to deliver high torque
1:15 Leverage discussion and examples
2:10 High torque ratchets
2:35 Ratchet handle changing
3:20 4 to 1 Torque multiplier introduction
4:13 Caution label
4:40 10-20 percent loss
5:30 The planetary gear set in the head
5:42 Torque multiplier setup
6:24 Four times easier than without torque multiplier
This video helps cover content related to the 2017 National Automotive Technicians Education Foundation (NATEF) Required Supplemental Tasks - Tools and Equipment:
1. Identify tools and their usage in automotive applications.
2. Identify standard and metric designation.
3. Demonstrate safe handling and use of appropriate tools.
4. Demonstrate proper cleaning, storage, and maintenance of tools and equipment.
5. Demonstrate proper use of precision measuring tools (i.e. micrometer, dial indicator, dial-caliper).
ABOUT US
Weber State University (WSU) - Department of Automotive Technology - Ardell Brown Technology Wing - Transmission Lab. This is part of a series of videos on Precision Measurements and tool care - Basic use and care of a Torque Multiplier.
This procedure is taught as part of our 2-year associated degree program. For more information on the Weber Automotive program, visit: www.weber.edu/automotive
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
QUESTIONS FOR TEACHERS:
1. How do you speed up, or slow down, a KZbin video?
2. How much torque does a typical crush sleeve require to begin crushing?
3. Why should impact guns never be used on anything that contains a bearing?
4. Google the definition of bearing "Brinelling", then describe bearing Brinelling in your own words.
5. What is the danger of putting a pipe on the end of a ratchet handle or breaker bar handle?
6. Under what conditions should a 3/4 inch drive ratchet and socket be used?
7. What is the advertised torque multiplication ratio of the torque multiplier shown in the video?
8. What is the actual torque multiplication ratio of the torque multiplier shown in the video?
9. What is the maximum output torque of the torque multiplier shown in this video?
10. How much input torque is required to reach the maximum output torque of the torque multiplier shown in this video?
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive

[@WestCoastRoller]

Thank you for this instruction it cleared up some questions I had.

[@nicke2307]

I use those to loosen center lock wheels on the porsche GT3!!! It makes it easy and less chance of scratching the 300k+ car with a breaker bar!!!

[@luke3713]

Didn't know what brinelling was and now I learned something today so for that I thank you

[@sleepingontheblacktop6053]

Thank you so much for this video. I was searching through my grandfathers tool collection and found one of these. Your video was the first that came up in the search and I’m glad it was. You explain things perfectly and simply for people like me. With that being said, in your opinion, with that 10%-20% loss in there, what would someone do to counteract it? I know it seems simple at first, just add to your input, but is it that simple? Or does it really depend on the application? Just curious about that one aspect. Thanks again for the video!!

[@waterguy1744]

Great video!! keep up the good stuff man.

[@WeberAuto]

Appreciate it!

[@ericneal8582]

I'm so happy that KZbin exists to be an archive of the brains of master technicians like this. This guy sounded like an expert 15 seconds into this video.

[@WastedElephant]

He is an expert and he also sounds sick and tired of dealing with seized fasteners.

[@edstransitscott9186]

Great job Sir, love your vise in video,

[@DougAlesUSA]

Excellent explanation. Thank you.

[@WeberAuto]

Thanks for watching

[@theyear-pj4sj]

Fantastic video, very well made.

[@koitorob]

i hate to imagine how much snapon would charge for that tool...

[@alb12345672]

Your first born :lol:

[@Tosh.O]

i own that same exact tool and got it on ebay for $600 and use it almost every day

[@cameronduff884]

Probably less than a ruined differential...torcUP, Norbar, ALKITRONIC, Proto, protorqe tool, RAD...Harbor Freight..you have few choices.

Can you make a video about brinelling and impact guns? I couldnt find anything about this online.

[@TheSynStalker]

Thank you for warning about bearing brinelling. My mom's car has had one particular bearing replaced multiple times and I couldn't figure out why. It was because of the mechanic using an impact on the spindle nut.

[@WeberAuto]

That will do it! Thank you!

[@WeberAuto]

Thanks for the feedback, it is a critical measurement and setting if you want a long lasting axle.

[@cameronduff884]

I just learned something, thanks!

[@gadasavideos8564]

Or for the loss you could work on the basis of it being 3.2 to 1 when determining input torque.

[@georgenlfull]

Wonderful QUIET !

[@farming4g]

Would something like this work with a battery drill/impact tool? I'm looking for some gear reduction to operate a jack up and down (instead of using a hand crank) since I don't think a drill would be enough itself directly on this particular jack... wondering if the head of this torque multiplier supports it. Much cheaper alternative than having to wire or plumb in electric/hyd motors on a piece of equipment.

[@chitun3275]

Superb.

[@WeberAuto]

Thank you

[@Irvin_Wright]

That's a big one!

[@Comm0ut]

Every Harley mechanic should have one!. I can remove compensator nuts slathered in red Loctite using one hand with perfect control.

[@jonathankrum3016]

Great for torque angle spec like on a crank bolt! Just remember to support the head and to not over tighten! YOU WILL SNAP VERY LARGE BOLTS AND FASTNERS VERY EASILY!

[@raulhuerta1573]

my question is what should I do to unlock my automatic transmission from my Subaru Frontier

[@truthsmiles]

I would have loved to see a demo of that tool. Other torque multipliers have a “foot” that creates torque from pushing on a reaction point. Does this version not require a reaction point? Or are you expected to be able to hold 1,000 ft-lbs with your hand?

[@WeberAuto]

You only have to hold up to 250 ft-lbs with your hand. The same torque you are applying, There is actually a tool to hold it too. Thanks for watching

[@charvakkarpe]

@@WeberAuto Come on, man! For a university professor, you ought to know basic physics and force balancing. To apply 1000 ft-lbs, you supply 250 ft-lbs with the handheld ratchet and rest the torque multiplier bar against the ground or frame of the car where it will generate 750 ft-lbs more. It won't work if you just have the torque multiplier floating.

[@genxmurse7019]

I like those torque multipliers, but some of them are very pricey. Right now, all I use is a good sized 3/4 breaker bar with some of my weight behind it.

[@geojor]

you know your stuff, thank you ...

[@WeberAuto]

Thank you!

[@Alaskabobb100]

Look at the Ratchet helper, it is 1/2" in and out and low cost too.

[@WeberAuto]

The torque multiplier is 1/2" in and 3/4" out. I guess I do not understand what you are saying.

[@aussie2uGA]

@@WeberAuto I realize this is an old video but this is what he referred to: www.amazon.com/Ratchet-Helper-Multiplier-Reversible-Included/dp/B01CZ23MNC

[@loismays4620]

I'm a total novice but this was so clear THANKS 😁

[@alanportwood4201]

We’ve come a longways Dr

[@g18210]

What is the mechanism inside a ratcheting socket wrench ?

[@WeberAuto]

I do not know

[@groosbro1]

It's a planetary gear set. The guy said it three times, at least.

[@JSAFIXIT]

The guts look kind of like the end of a splined rod, the locking comes from an arm that fits into the splines, then skips over the splines when you swing it the other way.

[@oleksipro]

But, what tool to buy?

[@robweiss2913]

Manual states torques @ 3.4 times

[@WeberAuto]

Thank you, yes, I state that at 4:14 when talking about the warning label. Up to a 20% loss from the 4.0:1 ratio

[@Type-RS]

With the 10-20% loss how do you check for accuracy? Seems like you really would have no way of knowing what you torqued to.

[@Comm0ut]

For large fasteners that's not an issue. Most precise torque application is for "torque matching" patterns of fasteners as on cylinder heads, aircraft gear box flanges (I'm also a jet mech) etc. If in doubt torque to the middle of the specified torque range. Heavy equipment mechanics are major torque multiplier users but I love them for Harley compensator nuts because they offer control no other method does and do not do rude things to crankshaft bearings or crankpins when breaking torque for removal.

[@deezelfairy]

@@Comm0ut This, I'm a forklift mechanic I use one fairly frequently. When you get into torquing big fasteners on heavy equipment the specifications in the manual are a fairly wide spread. A lug nut for example will be have torque spec with a range of say 350-450 ft/ibs which is hardly precise. So much more convenient using a small 18" 1/2 torque wrench and a multipier than a great big 6ft long 3/4" drive torque wrench.

[@suggesttwo]

with that torque multiplier let the ground get in the way if possible.

[@alacastersoi8265]

it makes sense intuitively that you can't do it completely within one bar and head, but also I don't know why.

[@garymatusavige3639]

Where do you get it how much

[@WeberAuto]

This one is Snap-On, but I am pretty sure there are other sources

[@garymatusavige3639]

@@WeberAuto i found one northern tool with a ratchet 212 its for someone else's project so I haven't rushed to buy it for them

[@ericd7761]

lol we use these with 1” guns at work for excavator counterweights

[@cameronduff884]

I'm just a school bus tire changer but I would think you guys would have a full blown air or cordless torque multiplier, but if that actually works for you then that's fine, I'll just think twice about buying a used one on eBay.

[@markchambers7191]

Never hold onto the reaction arm of the torque multiplier.

[@truthsmiles]

What do you do then? Just brace it against another part of the vehicle? What if there isn’t a convenient point to brace against? Could one theoretically use a very long, strong cheater pipe?

[@Fixitvincent81]

When you hold the reaction arm yourselves, then you still have to deliver a fair amount of the output torque right?

[@truthsmiles]

@@Fixitvincent81 Yes I would think you’d have to hold all of it. Since making this comment I purchased one and I don’t see how you could possibly hold the reaction arm. The whole principle of operation is that it uses some rigid part of the structure to push against. If you could hold enough torque with your arm, you could simply turn the nut conventionally.

[@cameronduff884]

I wish I could answer this question, I was lucky enough to take a little tour of a multiplier distributor near me and they had shelves of specialty reaction arms, most costing as much as this tool shown,and they all had one thing in common, they needed something to lean aganst, a nut,a hole, a long arm to clamp or weld something to. (exception of a special toothed washer)(HYTORC)

[@brianw4brian]

LOL. i used 1/2 inch breaker bar with a jack and basically locked the pinion and weight of vehicle would crush the sleeve.

[@gigstick]

Is that save to use torque multiplier with air impact?

[@StevieB-jj9fz]

No it will mess it up

[@Tosh.O]

that 3 foot long ratchet is only 18 inches

[@Tosh.O]

ok ok im done he said that handle is 4 ft i cant watch this anymore. That handle is 2 ft. leaving this video

[@a92pritchard]

I just tried explaining to my girlfriend what a torque multiplier is for and she didn't get it and started crying.

[@williamwofford4919]

Just use a scaffold bar! :P

[@cameronduff884]

Perhaps, if you measure it and do the math.

[@thunha3517]

Omg.

[@HayabusaRydr]

@5:07. You mention 400 ft lbs - 80 ft lbs for the 20% loss but that math is incorrect. The correct way would to do 400 / 1.2 (which is 20%) you would get 333 ft lbs.

[@markrich3271]

socratic.org/questions/20-of-400-is-what-number

[@Ihavetruth22]

20% = .2 x 400 = 320.

[@MorrowSind]

@@Ihavetruth22 No: The equation is: 400 - (.20 x 400) = 320

[@taylormauldin3093]

I was wondering what happened to this dude after being shot by Tuco Salamanca

[@lotan9709]

0:11 xx

[@Ken19700]

Get yourself a Swench.

[@ryanrivard8775]

i want my time back

[@icecreamsundae1038]

If you're not strong enough to tighten it without the multiplier, you're not strong enough to hold the multiplier while you ratchet it... They are made to brace against something stationary; a frame rail, the ground, I've even seen guys drill a hole in the end of the handle for a clevis and chain to hold them down. Keep studying bud, and you'll be a real mechanic one day!

[@WeberAuto]

Actually they are quite easy to use with proper training. Even a weak old wanna-be mechanic in a wheelchair can use one to crush a pinion crush sleeve at over 350 ft-lbs (without an impact gun). No chain needed. see kzbin.info/www/bejne/ZnW0gX2mf5yrrLch36m12s

[@TheTheomax]

I just took a look at the video you linked^ above. I'm finishing my first Diff rebuild Dana model 35. It took 4 crush sleeves it calls for 10-13 in-lbs pinion preload. I got it at 12 in-lbs on the 4th try. Thank you very much for taking the time to make these videos

[@mrfrankcastle083]

WeberAuto Damn, like whoa.

[@MattJonesYT]

Carbon FWB the multiplier is the same as using a pair of ratchets that are 3x (or whatever ratio) longer, so if you couldn't tighten it with the longer virtual ratchets then you can't use the multiplier.

[@HayabusaRydr]

Carbon FWB. Maybe you need to understand how a planetary gear set works before you go and try to make yourself sound like you know everything. Since you already know how to use KZbin from the looks of it, just go to the search bar and type "planetary gear" and I'm sure you'll figure it out from there.... FYI before being a smartass, make sure you know what you're talking about or you just look like a dumbass...

[@hoilon1165]

Like si veniste a jalartela.

[@vatha5548]

if you want God to forgive you dont commet here just go to the church and pray.