Differential Ring and Pinion Gear Setup

Weber State University (WSU) - Automotive Technology Department - Transmission Lab. Toyota Tundra 10.5" Rear Differential Ring and Pinion Gear setup. This differential is typically used in the 2007 and newer Toyota Tundra with the 5.7L Engine. This differential uses a removable differential housing, but the setup is similar to other one piece housing differentials used by other trucks. Be sure to watch our Differential Side Gear Backlash video for complete setup information.

Download our Ring Gear Contact Pattern Interpretation Guide at http://departments.weber.edu/automotive/YouTube/Weber_Ring_Gear_Contact_Patte...

This video helps demonstrate part of the following NATEF Tasks:
A3.E.1.6 " Measure and adjust drive pinion depth.", a priority 2 task.
A3.E.1.7 " Measure and adjust drive pinion bearing preload.", a priority 2 task.
A3.E.1.8 " Measure and adjust side bearing preload and ring and pinion gear total backlash and backlash variation on a differential carrier assembly (threaded cup or shim types).", a priority 2 task.
A3.E.1.9 " Check ring and pinion tooth contact patterns; perform necessary action.", a priority 1 task.

http://www.weber.edu/automotive

Category:

Education

Tags:

• 10.5
• Ring
• Gear
• Pinion
• Setup
• WSU
• Weber
• Auto
• GM
• ASEP
• Ford
• MLR
• Chrysler
• CAP
• Toyota
• T-TEN
• AAS
• BS
• Tundra
• how-to
• ring
• gear
• pinion
• Contact
• pattern
• rear
• axle
• front

[trucEtnA]

Aloha Weber Auto in your explanation on putting load on the differential set up (using the brakes and turning the pinion flange with a socket. I was wondering if perhaps in doing this you could off set the pinion pre-load?

P.S

BTW you almost said backass at 10:03

[WeberAuto]

@trucEtnA Hi, that is a good question. As long as you are using a new pinion nut with thread lock compound, a new crush sleeve or preload shims AND you only apply the brakes just hard enough to reach the appropriate loaded rotational torque at the pinion, it will not over torque the pinion bearings as you run the contact pattern.

[Tenkolazy]

he totaly bent that fucking ring with the hammer jajajajajajaja

[WeberAuto]

@Tenkolazy Hey, thanks for noticing. Pretty funny huh? Things never go as you would like them to while you are recording video. By the way, a slightly bent shim like that will not hurt anything. The bigger concern is to not mushroom over the edge of the shim with a steel hammer, it will cause the bearing cup to sit slightly tilted resulting in premature bearing wear and noise. It is a lot harder to install those shims than it looks like.

[jrstow86]

One thing you did not mention, in which I have been told by several people, but still not convinced its correct, especially how your so adamant about measuring backlash on every tooth, before installing the new bearings, I was told to press off the old side and pinion bearings, and slightly grind out the inner races so they are easy to put on and pull off to ease the process of setting backlash... It would make sense to use the new bearings, as their tolerances may/most likely be tighter...???

[WeberAuto]

@jrstow86 Hello, In a perfect world that might work, but today's new replacement bearings are not the same dimensions as the old bearings. There is actually a plus-or-minus .003" (.076mm) thickness specification for some replacement bearings. This means that if you do as you say (grind the old inner bearing races) and then replace them with new bearings, you could be off as much as .006" (.152mm) to the left or right affecting your backlash and your side bearing preload.

[6806goats1]

WIsh I would have had this video back in 1976. Had a properly set up 12 bolt posi in my 68 Camaro but I just had to change to 4.88's. Thought I had everything set up correctly but it didn't take long before the rear started singing. Wasn't long after that when I just sold off the car. Mistakes made. Oh and if you mod something...save the old stuff or mod a replacement part. That was the other reason I sold it off. Bought another 68 in 1984 but just not the same as your 1st love.TMI, rtn to prog.

[6806goats1]

@wafrederick I wonder if the special additive was being used. When you mentioned posi it jogged my brain cells and I remember that GM made a special additive that was needed for posi units. It's basically a extreme pressure moly-b additive for posi's. I like synthetic oils but glad you brought this up. I was going the same route with Amsoil and was warned not to forget the additive if running a posi. Thanks for the update.

[wafrederick]

@6806goats1 I know a guy that fixes race cars for a living and he has seen this happen.Most race car drivers in my area kick Royal purple off the side not using it.My father's friend Rich has seen this happen too,replaced a ring and pinion because of synthetic gear lube.Was fine before the the switch and was noisey after.He also has a 1983 Monte Carlo,a 9 inch Ford with a detroit locker and the place he got the rear end from said no synthetic gear lube screwing up the detroit locker.

[6806goats1]

Another awesome video.

[6806goats1]

@wafrederick Sorry but I find that hard to believe. Is this a personal preference or do you have data to validate this claim?

[theonlytags]

Great video you take alot of time and effort thank you :)

[jmanwild]

could you, or have you, made a video covering IFS front differentials, for example, the gm 8.25" front diff found in all 1/2 tonnes from 99-12?

[stephen4177]

@Trx420fm1 I dont haven't herd that about then shutting that down for now mine says made in texas this trash talk is addicting aint it fun as hell to ur truck was clean the quad got dirty mine stays clean cant do much in this shit state n.y but go on a beach but it takes on the home stuff rock dirt lumber u know home depot stuff u can call it yuppie iguess but all 1500 do about the same thing now give or take a couple pounds did u c the 10.5 ring gear yet