Rear Differential Pinion Seal

[Bahndvr]

What size is the nut? I want to make sure I have a socket for it.

EDIT: Chilton just says to remove and discard Pinion Nut. Odd it doesn't give the size.

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[lxh89]

What size is the nut? I want to make sure I have a socket for it.

EDIT: Chilton just says to remove and discard Pinion Nut. Odd it doesn't give the size.

1 1/8" SAE

 

[Bahndvr]

Not Metric, okay thanks

 

[Anthony 05 GT]

Oh it's metric, but the SAE size will fit

 

[Bahndvr]

28 mm - 29 mm

 

[Jay-rod427]

You can't set the crush sleeve preload without an empty pumpkin. The extra force to turn the axle's and tires will give a false reading and will be set too loose. Like a few others said do NOT replace the crush sleeve, and index mark the nut to put back exactly where it was. Also you don't need the fancy pinion holding tool as you won't be taking apart the gear set. Just set the e-brake, and it won't turn so you can loosen/reinstall the pinion flange nut.

 

[347CobraII]

After going back looking through Ford manual figured out what it is and yes it can be reused. It's not crush sleeve as we know for old 8.8. It's preload sleeve where you torq pinion nut to spec and check preload if out of spec you replace it. Since it's not crush sleeve over torqueing pinion nut will not tighten up preload. They use this system on wheel bearings on big trucks or LMS hubs

 

[Stress50]

What location would this be and cause this leak I have on my diff

 

[Justgonna send it]

Is there a seal kit that can be purchased or will i have to get all the parts seal etc. separately? Also whats a good fluid to put back into pumpkin ?

 

[Skye]

Also whats a good fluid to put back into pumpkin ?

Attached are some references on the fluid, from the Owners Manual and the Ford site.

Unless operating with unique equipment or situation, I'd continue to use the OEM oil and weight or a commercial equivalent that meets the spec.

https://www.fordservicecontent.com/...-Owners-Manual-version-1_om_EN-US_05_2018.pdf

https://www.fcsdchemicalsandlubricants.com/resources/quickreferencecharts

 

[Justgonna send it]

Attached are some references on the fluid, from the Owners Manual and the Ford site.

Unless operating with unique equipment or situation, I'd continue to use the OEM oil and weight or a commercial equivalent that meets the spec.

https://www.fordservicecontent.com/...-Owners-Manual-version-1_om_EN-US_05_2018.pdf

https://www.fcsdchemicalsandlubricants.com/resources/quickreferencecharts

Thanks. I have never seen a seal leak/light drip at 30k. This is crazy

 

[Skye]

I have never seen a seal leak/light drip at 30k.

I recently had the left axle seal replaced with fewer miles. My current thought process is it is not necessarily the seal/s, but the assembly process.

Documentaries I've seen, workers have moments to put-together things I could easily blow several hours on. I feel seals getting nicked, seated unevenly before tightening, etc, could have something to do with. It's just a thought.

Good Luck in the repair.

 

[Justgonna send it]

Yea What’s crazy it a 2020 HHP eco. That’s not really beat on. hell i think it was starting to leak at like 15000 or 20k i just thought it was something she picked up off the highway.

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