Links to the tools required to rebuild a differential: Gear Marking Compound: amzn.to/4agE3Ek Calipers: amzn.to/48nlVr7 Dial Indicator: amzn.to/3utnAxB Beam Torque Wrench: amzn.to/3UODXzz Pinion Flange Holding Tool: amzn.to/3SZ2NLF Bearing Splitter: amzn.to/4bIN1f2 Bearing/Seal Drivers: amzn.to/3uCYrAs Hot Plate: amzn.to/3uuUu0Q Shim Drivers: amzn.to/48j5KLp Chemicals: Retaining Compound: amzn.to/3SZpbEI Thread Locker: amzn.to/48kF7pl RTV: amzn.to/3OLwaP9 Degreaser: amzn.to/3uBzhlG Parts used in this Ford 8.8 build: Ford Performance 4.10 Gears: amzn.to/49EJrRk Ford Performance Install Kit: amzn.to/3I3hR4w Torsen T2R Differential: amzn.to/3SKyXsQ Moser 31 spline Axles: amzn.to/3I4DYaI Crush Sleeve Eliminator Kit: amzn.to/49AKSAr My Amazon Store: www.amazon.com/shop/repairgeek Help support the channel, buy using my Amazon links As an Amazon Associate I earn from qualifying purchases and your cost is exactly the same.

This is the best gear pattern video you will find on youtube. Not sure why search fails to list this video at the top.

Getting ready to re-gear my Dana 80 and Dana 60 to 4.11. This is one of the best videos I've found on gear patterns. Great job, man! Thanks!

I appreciate your tutorial. Thanks.

Excellent Video!! Thanks!

This is awesome. Thank you for this information.

Very well done mate. Thank you.

Great. Information, many thanks

Awesome job my friend.

Nice!

Excellent

Thanks nice explanation I got now

Awsome explanation....I have Yukon 4.56 gears in my AM 11.5 differential when I ran the pattern my tooth contact on the ring gear was dam near identical to the pattern Yukon gear recommended pattern was not to deep or to high my backlash was .006 and that's been 200k+ miles ago with no noise in the differential

@cecilandrews7479

14 күн бұрын

The reason for backlash being kept within the specifications. 8 being the tightest I would ever accept is because when you're driving the ring and pinion heat up in that backlash disappears. Two little backlash after the gears heat up puts the gear set in a major bind. Which will result in failure

My drive side is good thanks

What does it mean when you take the cover off and it looks like someone stuffed it full of steel wool? That diff ran fine up until I decided to change it out with a low mileage unit just incase. I discovered the "steel wool" inside at 160000km, cleaned it out and ran it till 330000km. Pinion ate deeply into ring gear during that first 160k. Pretty sure it came that way from factory, it was a one owner Jeep XJ Chrysler 8.25. Didn't even make noise.

Hi could I possibly ask advice, is hammerite under body seal spray good stuff to use?

Excellent, thank you, i purchased spicer 4.88 gears to replace oem dana spicer 3.73 hopefully all goes well ... Ps. I remember you mentioned in another video when you disassembled the mustang rear that it had timken and koyo, i purchased yukon master overhaul kits and they both (front n rear jeep diffs) have timken and koyo on the pinion, after some research it appears (i may be wrong) that koyo bought out/ merged w a portion of timken business, from what i understand although Japanese company most of the differential koyo bearings are manufactured in usa ?

@jimmyfreeze3782

7 күн бұрын

Pro tip- Use Koyo (USA or Japan) vs Timken. Don't believe me, put them side by side...you'll see.

💯👍😎

Why do you HAVE TO stay in the specified range for backlash? Isn't the mating pattern of the teeth far more important than a couple thou out of spec backlash?

@cecilandrews7479

14 күн бұрын

Backlash is determined by how much heat the gears develop and expand. With two little backlash has the gears heat up will put the gears in a bind resulting in failure

It’s a matter of “oh pinion” 😂

@RepairGeek

3 ай бұрын

😂😂😂

@michaelatkins9780

2 ай бұрын

If we were to do a paint pattern on that joke, I'm afraid we would find it slightly misaligned.

So if you have to take it apart by trial and error maybe 3-4 times to find the right pinion depth shim, won’t my inner pinion bearing get damaged from taking it on and off so many times with the hydraulic press and bearing separator?

@RepairGeek

2 ай бұрын

Make a setup bearing. I address this in detail in the differential rebuild video.

@rferguson3719

2 ай бұрын

@@RepairGeekyeah unfortunately either my setup bearings had enough difference in the tolerances, or a bearing race wasn’t fully seated. Cause my pattern changed from the setup bearing to final install with the bearings pressed on..

@terryzak1742

2 ай бұрын

When I rebuilt my son's differential for his V6 Mustang, I purchase the "GXL Carrier & Pinion Bearing Puller Dana 30, 40, 60, 70, 80, Ford 10.25 Clamshell Design" bearing puller, which made removing the bearings very easy and didn't produce any damage. For installation, I finally had a good excuse to purchase a nice shop press. Great video. Really appreciate all of the insights.

@cecilandrews7479

14 күн бұрын

Actually they have a clam tool to remove the bearings without damaging them. So if you don't do it for a living you don't need to waste money on a bearing set for setup

Hi, I have a sprinter 519 with about 300k km, when I accelerate there is a sound in the differential, at the speed of 75-80 km/h it is louder. Who do you think would be the problem? (it seems to me that the backlash is higher than normal)

@RepairGeek

24 күн бұрын

What does the fluid look like?

@stefansas4566

23 күн бұрын

@@RepairGeek I changed the oil about 4k km ago, and it looked pretty good and there wasn't much dirt on the magneto.

@RepairGeek

23 күн бұрын

If it has a carrier bearing check that first. Usually if you've had some kind of bearing failure in the differential you will have metal in the oil.

@stefansas4566

23 күн бұрын

Today I looked through the filler hole and noticed that the backlash comes from the spider gear has play on the pin.

What kind of rear end is that, limited sleep?

@RepairGeek

Ай бұрын

Torsen

@user-pw7wl3nu1l

Ай бұрын

@RepairGeek what does that mean? I have that on my 2013 Mustang GT. I'm going to rebuild it by watching your videos.🤝 Does this one have clutches inside?

@RepairGeek

Ай бұрын

​@@user-pw7wl3nu1lno clutches. Google torsen differentail for more info.

@user-pw7wl3nu1l

Ай бұрын

@@RepairGeek thank u!🤝

Youre too high on crown. You should have space

Great video. Thank you!