Front oil seal?

[alanflies]

Ever seen a front oil seal pop out?
This is how i found it...

<a data-flickr-embed="true" href="https://www.flickr.com/photos/152612783@N04/36792804800/in/photostream/" title="20170912_121342"><img src="https://farm5.staticflickr.com/4355/36792804800_fb18a804fa_b.jpg" width="1024" height="576" alt="20170912_121342"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

I literally just pulled it out with my fingers from here...
Just gotta love the suprises you find when buying a used vehicle...lol
This truck's lower timing cover was MIA...I suppose because of the Mr. Wizzard fix on the crank position sensor housing...Also found the crank pulley destroyed because of improper torque. It had walked the bolt off by a quarter inch, allowing the balancer to become disengaged from the woodruf key. Yikes...

 

[nissanh]

Is that an OEM seal? Looks like not.

 

[kolelt]

Is that an OEM seal? Looks like not.

Could swear OEM seals usually are brownish.

 

[LittleCaesar]

Maybe the crank moved enough at the snout to dislodge it?

Never on a 4runner but thanks to folks go ape on removal with a screwdriver and then marring the aluminum, yes, I have seen three or four new ones pop right out within 5000 miles or so.

 

[diverscale]

pressure from inside the case. Look at your cover gasket breathers and PCV.

 

[alanflies]

Could swear OEM seals usually are brownish.

Don't think it's a KOYO seal, the belt is a DAYCO and the water pump is no brand. I was told the belt had just been done. So I guess it had but with non oem stuff...Anyway, all oem stuff going back in tomorrow morning. belt, pump, tensioner, seal, balancer, power antenna, hood cable, washer reservoir, brakes, fluids, filters, trans cooler, etc.etc. pretty much going through the whole truck front to back. I'll add PCV to that list too...

She will be ready for another 100k trouble free miles when I'm done.

 

[audiness]

Don't think it's a KOYO seal, the belt is a DAYCO and the water pump is no brand. I was told the belt had just been done. So I guess it had but with non oem stuff...Anyway, all oem stuff going back in tomorrow morning. belt, pump, tensioner, seal, balancer, power antenna, hood cable, washer reservoir, brakes, fluids, filters, trans cooler, etc.etc. pretty much going through the whole truck front to back. I'll add PCV to that list too...

She will be ready for another 100k trouble free miles when I'm done.

I am doing my timing belt job tonight as well on my 3rd gen. I just put in a new OEM front oil seal. the strange thing was, I was able to put it in by hand- literally no hammering was required. I am a bit worried that it will pop out like this one. I am wondering if I should have used some RTV on it or something....

 

[mtbtim]

Here's a video related to this subject. In the video, we replace both cam seals and the crankshaft seal.

<iframe width="560" height="315" src="https://www.youtube.com/embed/vHC46ypHxWc" frameborder="0" allowfullscreen></iframe>

 

[alanflies]

It shouldn't be able to pop out as long as the timing gear and harmonic balancer are installed and torqued correctly. In my case, the balancer bolt had backed out allowing the balancer and timing gear to walk forward on the crank. This allowed room for the seal to be pushed out. I did notice the fit of the aftermarket seal was much looser than the Koyo replacement. The Koyo went in very snug. It wouldn't hurt to put a very thin film of RTV around the outside and remember to lube the inner part and make sure the spring is intact.

When you run into problems like the front oil seal race being scored or otherwise damaged, or like in the video Tim posted about the tensioner pulley bolt being stripped, or like in my case the cast aluminum was broken where the crank position sensor mounts, You will need to replace the oil pump...That's not a fun job especially when you haven't planned for it.

BTW... I absolutely love your videos Tim...Good on ya!