Seals: transfer case input-output, pinion.

[rdarnell]

just purchased SKF 17758 and 18979 from Rockauto... not sure when I will get around to using them though...

[rdarnell]

specs on 18979 seal

http://www.skf.com/in/products/seals/in ... tion=18979

[Esteban]

just purchased SKF 17758 and 18979 from Rockauto... not sure when I will get around to using them though...

I'm getting these measurements for them:

SKF 17758 (for Transfer input seal)
Width (in) 0.354--->9.0 mm
Shaft (in) 1.772--->45.0 mm
Bore (in) 2.677--->68.0 mm

SKF 18979
Width (in) 0.276--->7.0 mm
Shaft (in) 1.89--->48.0 mm
Bore (in) 2.874--->73.0 mm

If you're planning to use SKF 18979 for the Transfer case output seals, and the pinion seals, the inside dia. (Shaft) might be too tight. The shaft is 50 mm. I measured it before ordering the ones from eBay. Member 2869ral did report that the inner dia. was a bit tight, and he found the ones on eBay after that.

[Shad]

Does anyone have an extra output shaft seal to sell.... 38189-4400?
I am out of commission until I locate one.
Thanks
Shad
425-250-8093

[rdarnell]

looks like the time to put all the seals I have acquired is getting close. I have ordered new bearing too!

[rdarnell]

Just order pinion seals from the above amayama site. The AVX 50x73x12 seals feel a little too tight for my liking.

[moore_rb]

Ok, here they are, side by side...

NOS Nissan 38189-44000 on the left, AVX TC50X73X12 on the right.

I tried to order a set of the OEM seals via Amayama last week, and the order got declined due to out of stock; so I'll be using my remaining NOS seals on my 62 resto, and will use the AVX seals on my 65 build.

Both are double lip, but the OEM seal has a wider span between the lips, and the OEM seal is double-spring, whereas the aftermarket seal is single spring

Aside from that, the bore and outer diameters are spot on, and I see no reason why this AVX seal would not provide more than adequate sealing.

AVX also makes a thinner (9mm) version of this seal TC50x073x9 and the lip on the Transfer case output shaft housings is probably wide enough that you could probably butt 2 of the 9mm seals back to back if you wanted extra protection from water intrusion.

One other trick for keeping shaft seals extra water and oil-tight, that I learned from working on outboard engines, is to fill the inner lip with Marine grease before driving the seal into place.

[plateaucal]

https://www.amayama.com/en/part/nissan/3818944000

Just wondering, but is this not a good source?

[plateaucal]

Would the sealing surfaces line up with the machined areas as needed?

[moore_rb]

Would the sealing surfaces line up with the machined areas as needed?

Yes

https://www.amayama.com/en/part/nissan/3818944000

Just wondering, but is this not a good source?

Ummm....:

I tried to order a set of the OEM seals via Amayama last week, and the order got declined due to out of stock;

Amayama is a great source, when they have the part...and when you don't mind that the shipping will take about 60 days to get to the US