2011 Ford F-150 Stuttering Sound when Turning

This 2011 F-150 makes a chattering or stuttering sound during low speed turns. Let's replace the limited slip clutch packs in this 9.75 differential.
0:00 Intro
4:00 Tear down
11:00 Remove clutch packs
20:00 How does it work?
24:30 Reinstall
29:00 Test a new tool
33:00 Test drive
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[@chrisfinley4816]

My best friends cousins girlfriend knows this guy who knows this girl who once talked to another mechanic said your doing it wrong. Keep doing you Wes love the videos

[@Le_Comte_de_Monte_Felin]

Hey! I was married to her! She lies like a dog in a cement mixer full of porcupines.

[@jlucasound]

@@Le_Comte_de_Monte_Felin So You're the One! Hot Dog. I'll be Dipped... ;-)

[@jhenderson3087]

😂

[@beastrabban]

Save Ferr.. er I mean Wes!!

[@jonka1]

I was that mechanic and I said that I hope he doesn't do it wrong. Nobody listens any more.

[@pipefitter1728]

Not only do the folks down south not know what it is like to work on the rusty and crusty, they don’t know what it’s like to have cold , salty slush and water dripping down on you when working on the rusty and crusty during the winter! I sure wish I had someone with your skills and talents in my area! Keep up the great work!

[@mph5896]

They also have their challenges. When its 110f and you re expected to wrench in the shop.

[@heithdotysadventures7824]

Wes is really not in the south . He is on the upper side of the u.s . Granted he's not in Michigan but he's definitely not in the south

[@841k9]

@@mph5896 We do get triple digits in the Midwest. The steel shop building amplifies the heat on top of that. Cold means that nothing works properly. Fluids are syrup. Bolts snap easily. Air lines freeze. Battery powered tools have less power and die quickly. Any little bump tears your skin open. Everything takes longer than it should.

[@Mountain-Man-3000]

@@heithdotysadventures7824 Pretty sure the poster is aware of that. Salty slush dripping on me made me decide to work with electricity instead of cars.

[@masonboard]

@@mph5896 why does every southerner assume we don’t deal with heat up north? I live almost as far north as you can go in the U.S., the high last summer here was 103°. The lowest I’ve seen this winter is -30° Just admit you have far better weather and get over it, a lot of us live up here because we like the worse weather. Long winters keep the riff raff away lol

[@badideaworkbench5155]

I''m a diyer, not a mechanic by trade. That was interesting for me as I've never seen an explanation of how a mechanical LSD works. I appreciate you including that part.

[@Norwegian_Bastard]

thats not a mechanical LSD, thats a clutch LSD, mechanical LSDs have many moving or not moving parts, no need for changing clutchpacks and are generally stronger. look up Torsen t1s or ashcroft ATBs. or a detroit truetrac, thats a mechanical LSD, and are super to use, have two in my 4x4. indestructible in my testing (ashcroft ATBs)

[@badideaworkbench5155]

@@Norwegian_Bastard You're right about it being a clutch type. In my mind, if it's passive like this clutch design, it's mechanical. The only LSDs I have experience with are the electronic variety. I'll look up the Torsen and Ashcroft types.

[@Norwegian_Bastard]

@@badideaworkbench5155 ahh, that explains it, never really looked into an electrical one, except the haldex units of different cars, but that is more an electro hydraulic automatic gearbox (clutcheand steels) like this. with a tiny electrical pump making a hydraulic piston press up against the clutches providing 4wd. but wrapping my head around how a torsen and ashcroft ATB works took me a few months, untill i stumbled upon a video of one making it out of legos of all things and i understood exactly how it works. but the idea behind it is a worm gear can turn a gear but a gear can not turn a worm. but with modifcations or you would lock up completly if you let off the gas, lol. like pulling the ultimate handbrake if you ever slowed down

[@andywindy]

@Paul DeLucchi If you remember it, you were doing it wrong, or were sold Asprin instead!

[@sixtyfiveford]

Should have left the wheel seals. A little leaking would help mitigate future rust.

[@chrisvanweele6641]

Yah and completely fuck the brakes

[@DavoShed]

I tested my limited slip diff once. I dug two holes (in sand) under diagonal wheels until the vehicle was just hanging there. Started the engine and engaged 4WD. No way could I drive out of there as expected. I jabbed the brakes hard while the engine was spinning the wheels half a dozen times and it jumped right out of those holes. A mate of mine did the same thing without LSD and his car also leapt out of the holes as well. So even without a LSD braking the spinning wheel briefly allowed torque to be applied to the opposite wheels. I wouldn’t have believed it unless I did it myself. It’s a great trick that just might get you out of a bog. And if you save a couple of girls who are bogged anything could happen :)

[@philipgrubbs9757]

With cold thick oil, running the pump at a slower rpm will actually move more fluid than running it at a high rpm. You could see in the video that the oil coming out of the pump was cloudy, this is due to aeration of the fluid caused by cavitation in the pump. Love every video!

[@Drewmk-sc9zv]

Isn't it the truth Wes that a lot of those parts diagrams leave out parts in the pics ,great work by the way 😀

[@jp-um2fr]

UK. In 1961 at 15 years old I started an Ministry of Defence vehicle apprenticeship that ended on my 21st birthday. I spent the rest of my working life around heavy vehicles. Watching Wes often makes me realise you can teach an old dog new tricks or at least let him learn something. I look under the bonnet of modern cars and wonder what prat thought of that lot. Emissions - in my day if you could see across the road when you started a car it was fine. Thanks Wes, your making an old man very happy.

[@mark98070]

Would have liked to see what the friction plates looked like after 200k+ miles. I've got 125k on my 8.8 lsd and suspect there's not much friction material left on the linings.

[@timg8138]

Of all the "fancy tools" I've seen you use, the 2 I had to run out and buy were the simple ratcheting end box end wrench set, and a ratchet wrench with a pivoting head. Those have been a life saver.

[@thirdcargarage2951]

Nope. That’s a “ let someone do it” job. As always Wes. Good job.

[@infocpctrainer]

I'd like to add, yours is the only channel I watch without fast forwarding, it seems to me everyone else bores me to tears, not your videos, always entertaining, not wanting to miss a frame. keep it up, looking for next video to relax to Sundays here in UK.

[@nyminutemanpatriot3097]

I was a marine mechanic for 5 years before retired. We had a little pony impeller pump mounted to a 7 gallon bucket (sold retail ) to do oil/fluid changes. You can get the pump alone sold as a water pump, but all parts of pump are same (oil ready) great for waste oil, diesel transfer (even gas if you have the never) pump, and yes great for water too. Can get the drive motor in 110VAC or 12VDC too. But the best way was a weed killer sprayer pressure pump can (get the stainless ones with brass spray wand, plastic will work too but metal is better ). Just take the wand and bend to a "J" bend or even just add gas line (flexible), and away you go! When I had my garage at your age I had 4 of them, 1-gear oil, 1 trans oil, 1 brake fluid, and one empty for everything else. They saved me a lot of time & mess clean-ups!

[@somebodyelse6673]

Do you think that would work on something as thick as gear oil?

[@MitzvosGolem1]

Marine mech here also. Salt salt salt rust rust rust ..

[@braccali]

One thing I recently learned about are systems that use wheel sensors and can apply the brake to a single wheel. It can assist a LSD or open differential to transfer power to the non slipping wheel

[@kc360awareness]

Pretty sure Toyota pickups use that strategy. Good point.

[@michaelashcraft8569]

One of the interesting things about Wes is watching him USE the Tools he orders/buys because his profession would be even more difficult without them, and, what WE don't have can generally be rented...

[@robertgrauman8602]

If I remember correctly, I think Valvoline has started to put gear oil in plastic "bags" that kinda look like Capri Sun drink pouches. Worked great for when I changed the front and rear diff fluid in my Jeep. Didn't need to get out the hand pump.

[@hannahranga]

Nulon do the same if you're down under. I'm just too tight when I can buy it by the 10L

[@841k9]

Amsoil has the bags as well.

[@marty0715yt]

And they charge more for them.

[@robfinch3277]

Don`t taste as good as the Capri Sun drink though...

[@iglapsu88]

Love watching you work Wes! Thanks again!

[@tanksor]

One method I've used to get the differential to pop out is roll a rag between the ring gear and pinion I learned that from my father who use to work for a tractor dealer. I've done this on dodge front differentials and it has worked every time.

[@KarateSensei71]

That sure beats the hell out of the time I unintentionally used my index finger. I will need to try that next time.

[@55bigblockcid30]

That friction modifier is the stink that never ends. lol

[@stucook8622]

Thanks Wes! Its always a pleasure.

[@infoanorexic]

Dad would have loved having one of those pump when he changed out the final drive lube on his little dozer. No quart size squirtable bottles back then. Probably spilled twice what he put in those drives. He was oiled from head to toe when he finally got done. He considered making use of an item that was stored in our bathroom cabinet, which would have utilized a coat hanger while used for it's intended purpose ... but I think old school modesty and the fact that the community had a rather active rumor mill at the time kept him from buying one for that use.

[@Baldskul]

Always interesting and informative...thanks Wes for the the upload.

[@imdavid28]

Always excited to see you posting another video! Can’t wait for the next!

[@peteouellette975]

Nice going, I like the way you adapt the tooling you need

[@jimrky6062]

wOw, tearing down a diff isn't what it used to be: no stinking, sludgy grease-like substance masquerading as gear oil! Very nice work- no slips, errors or missed steps. Love watching you work (no pun).

[@chrissmith513]

Your right about the snow on the Used Car lot L o L When I was working at Gulf Service Station back in the 70s the used car place next store used to have a Panic Attack when it Snowed ! L o L

[@I-watch-at-2x]

"Basically magic" That pretty much sums it up! Thanks for taking the time to film this, seeing the amount of trouble and attempts to complete the job is always an adventure.

[@mikec6831]

Amazing, I have always wondered how a differential worked. Thank you.

[@garyhawthorne4599]

thank you for another great video. I really like how you show the work, not just say what you are going to do and then it is done

[@shook0002]

I hear the heater!! 😂. I did the clutch pack in my foxbody and had to wear a motorcycle helmet when I put the “S” spring back in. The first time I tried to get it in it shot across my garage at mach 2.

[@mnmarlin6074]

Thanks for the great description of how a limited slip functions and the difference between a limited slip and a locking diff. Excellent work.

[@mikeaho4143]

Great job Wes. Very good explanation of operation and great closeups of the repair. Thanks for sharing.

[@shackman1306]

Thank you again Wes. I always learn something and really enjoy your presentation. Have a great day.

[@MRrwmac]

Wes, Very informative and detailed breakdown/rebuild! I learned a lot! Thank You.

[@VanderGroejn]

Love the fact that you're approximately half my age and already just as bitter (to be truthful I was probably there in my thirties as well) when it comes to whiny people. Love your vids mate. Just keep doing what you're doing. ❤🍻👍

[@TheLumberjackking]

excellent description of limited and locking differentials wes

[@steveschumacher5470]

thanks Wes, you know what they say, work facinates me, I could watch it all day

[@eltsennestle998]

Very informative re: lockers vs limited slip. Which I'd known this 20 years ago.

[@mikenonameneeded3485]

Hey Wes, I don't know if you will see this, but I really appreciate your videos and they have helped me tremendously in troubleshooting and diagnostic issues. Not only in automotive but also in the way i approach my job in troubleshooting complex issues at my cellular tower sites. Thank you!

[@ardtessa]

Don't you just love it how any "mechanic" tells you how easy stuff is ? Like pointing to the 5 visible bolts on a rear bumper and saying "take these out and you're done!" Bit of a shame they often "forget" to mention the invisible fasteners and what other steps needed to be taken before you get it off .... Love the channel Wes ! Real mechanic doing real work for real people ! cheers, Ard

[@tech99070]

Appreciate the insights on on how the limited slip works. Have heard the term but never knew what went into it.

[@jamessimmons5066]

These are the only videos on youtube I click like before watching. Because they are all awesome!

[@DANDY1]

The more I see the newer auto line up the more I like older autos to be honest!

[@arthurfricchione8119]

Wes thanks for sharing all the details and what is and isn’t needed to do the job. You and family stay safe and well 👍

[@zarb88]

I was lost until he started hitting with the orange hammer, that part i understood.

[@Neg_Ice]

Been watching for years, your humor and work ethic makes some of the best content on YT, your really up there in quality content like LD18, DP, etc.

[@tekvax01]

hear hear!

[@oldguy4833]

Hey Wes back in the day I ordered by cars with posi-track - great tutorial on this fix - enjoy your videos they are always very informative !!

[@anthonydefreitas6006]

Excellent work as usual Wes 👍

[@novaka240]

Great explanation of the LSD.....super informative as usual!

[@mdouglaswray]

Always impressed to see you pull something like this apart and then reassemble with zero issues. Rear end gears are not tolerant of foolishness!

[@jasonyoung5628]

I'm pretty certain that 9 out of 10 times the people who write service instructions for vehicles have never actually worked on a vehicle in their lives.

[@Phill22k]

I'd say that of most of the people who design cars these days...

[@lolatmyage]

Writing out instructions is a common things to pass out to interns

[@nashsmith3005]

*Stays tuned with great anticipation * An excellent video as per usual. Thank you! 👏

[@drdougaz1]

YES, thank you Wes for another video. I was going through Watch Wes Work withdrawals. Keep up the good work.

[@gregholloway2656]

Good video, Wes. About the fluid pump, I made a similar tool out of an old small block chevy oil pump I had laying around. Spin it with a 1/2” drill. Pumps a lot faster than your new tool. 👍

[@mikemaccracken3112]

Cheaper too!

[@MaxNafeHorsemanship]

The shit we make out of junk always works better than the stuff you can buy...and a lot cheaper.

[@robertklein9190]

@@mikemaccracken3112 Of course you have to pull an oil pan to get a free one, but when the customer rolls away his oil light will be on.

[@mikemaccracken3112]

@@robertklein9190 didn’t say free😂

[@SportFury1966]

Yours runs the fluid THRU the pump; I'm betting this one is peristaltic so only the tube itself comes in contact with the fluid. So you have a set of tubes to use with different incompatible fluids, as opposed to contaminating the current fluid transfer with the remnants of the last fluid transfer still in your pump.

[@garfield89dude32]

Working on vehicles in a Midwestern winter, getting a salty, sandy, dirty shower while trying to change an oil filter. Yes, the struggle is real! Working on my company's fleet of trucks during the winter in SE Iowa I know the pain Wes!

[@ArnieTF]

nice job wes. thanks for taking the time to explain the physics behind the functionality of a limited slip rear.

[@brucemckelvy9920]

Excellent explanation Wes. I learned a lot watching this video as always.

[@uptownautogarage6833]

I Bought one of those transfer pumps because of him as well! Little slow on gear oil but trans fluid is a breeze. Well worth the month. I’m looking for things to us it on now lol.

[@mlawlan69]

With regards to the pump being slow, move the bottle ABOVE the height of what it is you wish to fill.... Fluid naturally wants to go down, keeping the bottle low only adds to the strain of the motor as you attempt to lift the fluid against gravity. Also, heating the thicker oils in a tub of warm water will make the process even faster. Another excellent video, thank you for all of the quality work you do both in and out of the shop 👍👍👍

[@drakemallard6656]

"Fluid naturally wants to go down".......Gravity. 😂

[@JHruby]

I'm here to watch you work on a differential and I'm going absolutely bananas. Just wanted you to know, Wes. Great video.

[@drive42]

When I was Deere wrench, I made a gear oil dispenser from an old freon keg. I laid the bottle on it's side and made some sheet metal feet so it wouldn't roll around. I welded a 2" pipe half nipple to the top and a 1/2" elbow on the bottom. The bottom elbow got a ball valve and a hose with a metal curved pipe on the end to go inside a gearbox. The top half nipple got a pipe cap with an air fitting hooked to 20 psi regulated air. Dump the oil in the tank, screw on the cap and hook up the REGULATED air. Open the valve and watch the oil shoot into the gearbox. We had one for each kind of gear oil we used, so no cross contamination. Worked great! Thanks for the video!

[@jadney]

Beautiful explanation of how a limited slip diff works. Now I understand. Yes, the gear oil probably would have pumped faster if it had been warm. It was also getting a lot of air mixed into it, which was probably part of the problem. That could be the inlet connection, the shaft seal, or the gasket around the pump halves.

[@jaredpaulsen3]

I really enjoyed your explanation of the limited slip functionality. I heard many many ways to simplify the understanding of it's function. And this really did a good job. For those who haven't had one apart in front of them this is a pretty close second. Keep it up Wes!!

[@richardjones5255]

That made me ecstatic that I am too old and infirm to task such a task any more. The way you told it all made sense, and would be extremely useful to someone facing the uphill task for the first time, as you did.

[@bpOutdoors]

Very helpful! Thanks for showing images of TSB 15-0114.

[@dominickserignese8837]

I had that same problem on my 2001 Ford Expedition Eddie Bauer. It stopped after I changed the speed sensor on the top of the rear end housing. Now I'm wondering if it also serves as an axle housing vent. Never had the problem again. I still have the vehicle, just turned 250,000. Runs like a top! I bought the truck in 2005 when it had 40,000 miles on it. I change the oil every 3,000 religiously. Thanks Wes. I'm learning a lot from your videos.

[@RABBITMotorworks]

Wes you amaze me with the work you do with so much rust and corrosion on the vehicles, I’m convinced that these are your special skills. Keep up the great work! Winter is almost over ✌️

[@tech99070]

I don't understand why all the top comments are saying he had to work through rust and crust. He worked on the differential which lives in a sealed oil bath. I know he definitely does the rust & crust stuff but not in this video. Super confused.

[@weshawkins7165]

Good video Wes and I like the way you explain how the differential works. So many people don’t know.

[@bostedtap8399]

Great insight to a limited slip differential, very interesting Wes. We missed watching the truck acclimatise In your shop, must be an important part you missed. 😆 🤣 😂. Excellent video Wes, thanks for sharing.

[@stxrynn]

Seeing the dripping slush was a reminder to a simpler time. Working on cars that were covered in melting ice and snow, coated with thick mud from the 3 miles of dirt road we lived on. Scraping to find bolt heads, and getting dirt in your eyes (remember those vinyl goggles with the elastic strap? Never worked.) I don't miss that too much. And thanks for the tool review. I appreciate those as well. Still saving to buy that ratcheting pinch bar.

[@davidhudson5452]

Goggles fogged up real good

[@stxrynn]

@@davidhudson5452 They were big and clunky, and that elastic always stretched out and they'd fall off when you needed them most. I HATED them. These new eye-huggers are so much better.

[@hanzfischer585]

Hello Wes, one trick i use is to preheat the gear oil in very hot water, then use the ( drill pump i got from peavy mart for 4.99 Canadian about five yrs ago.) Done in less than 7 minutes. Great show two thumbs up

[@JoeHynes284]

the longer the video the better, i had withdrawal yesterday and watched a few of your vids from 2 years ago

[@jonathan1427]

I appreciate the video titles being the problem to diagnose, not the eventual solution. Gives me a chance to contribute some wild guesses.

[@ScottDLR]

Great description on the operation of the clutch's! BTW, I made a transfer pump out of an old electric fuel pump. It's a bit slow (3 mins per quart) but it does the job.

[@jimrky6062]

I wonder how an engine oil pump would work? Might have to bore the plate or body for a Primer port ... buuuuut ...

[@spelunkerd]

I did a similar video of the clutch pack replacement in an LS Chrysler diff in a Dodge Ram, and to my surprise it is nearly identical to the Ford version you show here. The only significant difference is the way Chrysler use threaded adjusters to adjust ring gear backlash and axial preload, rather than shims you show here. It's easier to get the diff out but you need to make a special tool to get backlash into spec. Great video, Wes!

[@WatchWesWork]

Interesting!

[@nsaglian]

Excellent video, Wes! I especially enjoyed the "Professor Wes" segment concerning how the LSD functions.

[@dans_Learning_Curve]

Thanks for the explanation of how the limited slip works! I've never had to deal with one but have off and on thought about how they function.

[@FlatThunder]

The Factory Ford Service manuals seem to always call out a special tool for every job! I like the creative approach to accomplish the repair without specialty tools. Nice job Wes! 👍😁

[@infoanorexic]

GM did that, too. Even way back in 1961. Special tool "X" just to seat the rear main seal (basically a fancy piece of rope) on the 215 c.i. V8, for example ... I rolled it in with the plastic grip of a super-size screwdriver. It worked.

[@johnstokes2246]

@@infoanorexic $90.00 counter gear bearing loading tool was out of the question for me. A few pennies worth of wood dowel worked fine for me. I used it for years.

[@MaxNafeHorsemanship]

EVERYONE tells you to use "special" tools. They seldom are really "special" and I have yet to buy one. I don't even own a seal drift. I've rebuilt engines and transmissions without and will continue to do so. My torque wrench doesn't even "click".

[@FishFind3000]

@@MaxNafeHorsemanship well I understand the seal tools but to not have a torque wrench when building a motor is not good.

[@MaxNafeHorsemanship]

@@FishFind3000 I have one but it doesn't go "click". It's the old school type with a long needle on it. Besides, if you do enough, you get to know how much torque you are applying and how in many cases, it's not all that important. Bearing caps and heads for sure. The rest, just use common sense. Just had the head off my 66 and I drive it daily.

[@boubaros]

You scared the hell out of us. I thought we had to wait another week...:)

[@solargarage]

Loving the detail, awesome video.

[@bombardier3qtrlbpsi]

Great job as always Wes.

[@chrisreed3515]

Hey Wes - great videos as always! On the transfer pump - judging by your attire, I'm guessing that that oil is closer to the 140wt than the 70wt. Try putting the bottles in a tub of hot water for a bit before pumping. It should help speed up the process.

[@jonathanfenne4948]

Another great video, Wes! Wrt the transfer pump, did you have the drill in high? Is it a 'fast' drill? Or more of an impact type? I'm sure Eric O will be along shortly to tell you what your problem is :)

[@jonnygg6594]

Watch Wes Work knows magic, hes a wizard.

[@uptownautogarage6833]

Yes finally! Been waiting for a new video to drop. Keep up the great work. Wish I had a l great tech like you in my area.

[@cullenmiller8170]

That gear oil looked pretty aerated coming from the pump. I wonder if that pump is bad? Nice video like always and thanks for showing the guts on how it works.

[@lolatmyage]

it looked clear after

[@davidcraven277]

On the spider gears to hold the washer use a dab of grease to hold then makes it just a bit easier

[@brianbrundage1598]

I absolutely love the comment in the beginning that It’s to the point in winter where I’ve given up on plowing. I almost didn’t the last storm but couldn’t help myself

[@jimburgess9205]

Fantastic video, Wes. Thanks so much.

[@Dudleymiddleton]

6:56 Behold, everybody - he has a 10mm socket - long one too - that's not missing! :)

[@WatchWesWork]

Don't worry, the shallow is currently MIA...

[@breadman-oc2lx]

SMA TOOL ENVY????. I watch both channels and appreciate the quality hard work and great vids from both. Did i miss the vent installation that Ford Mothership recommended?

[@Tromador]

Always enjoy seeing a diff taken apart. One of those beautiful and elegant solutions to a problem that I just enjoy for its own sake.

[@daviddamico4288]

Nice work Wes always enjoy your videos..

[@artievan739]

Robins are massing in my yard(north of Tampa). Spring is coming.

[@WatchWesWork]

I hope so!

[@clintonroushff7068]

Hi Wes, Would your new pump toy work better if you heated the gear lube first? Maybe even hot tap water enough to help. Thanks for the great video. Take care Wes

[@bambambundy6]

I've used something similar on a boat.

[@ericcorse]

Excellent video Wes and ought to help folks out that are doing this.

[@ubertalldude]

Good morning Wes Love the channel

[@carlaustin7398]

My new car dealership after a snow fall. Your correct you can't sell cars with snow on them. The service department would have to go out and brush of the snow. Move cars and plow the lot. The salesman would watch out the window while staying inside keeping warm. A customer asked me why the salesmans didn't come out and help. I said they were to lazy and stupid to help. The customer mentioned my comment to the dealer. The dealer called me into his office and told me that was an inappropriate comment coming from the service manager. I stand by my comment then and today. Salesman are people who are to lazy or stupid to do anything else.!!!

[@tractordoctor7505]

Amen

[@QBRX]

It's beneath their elevated status to do any real work.

[@zmonchamp]

I think the gear oil was too thick for the pumper. You could see it aerating the output. I would suspect if you preheated the gear oil, it would work better. But yeah those things definitely are 'viscosity aware'. heh What is the tool that you use for squeezing tubes of silicone? I saw you use it one episode.

[@dev-debug]

Rebuilding my 95 8.8 limited slip this summer was on my schedule. I usually look forward to summer but you just changed that for me lol

[@nopoliticalparty3596]

Great video. I have seen that pump on SMA . Can’t wait till your next video. Keep up the great work young man.