Replacing front wheel bearings. What seals to buy?

I'm purchasing assembled front wheel bearing units for my 2012 4x4 Tacoma.

Can someone tell me if I will need the following seals?

Back of spindle: 90316-A0001 (Timken alternative 710573)
Outside CV axle: 90304-A0001

 

Anybody?? Truck has 112k on the odometer. I'm guessing since these seals will be exposed during the install. I may as well replace them. Or have most who performed a wheel bearing replacement found there to be little need to replace these?

 

many people do not replace the outer seal on the CV axle. I think that is short sighted. This seal is the first line of defense for water and dust getting into the bearing.

 

Thx badger - do you know what OEM PN this seal replaces?

$12 National Oil Seals 710477 Wheel Seal

https://www.amazon.com/National-710...automotive&vehicleId=3&vehicleType=automotive

 

Little confused. There's a National PN 710573, but it doesn't look like the Timken.

$17 National 710573 Wheel Seal

https://www.amazon.com/National-710...ie=UTF8&qid=1546917174&sr=1-1&keywords=710573

The link I provided earlier of the National 710477 looks like the Timken 710573

 

I think I see the issue. It looks like the Timken 710573 Amazon listing is using the wrong picture (it shows the 710477) seal.

 

I'm sorry, I don't have the part number handy, but when i did mine I could not find an aftermarket option for the seal. It was OEM only.

 

No worries - think I've got it figured out.

Inner Seal (For outermost portion of CV) - 710573
Outer Seal (For back of Hub) - 710477

EDIT - I have this ass backwards

Knuckle/Hub Seal - 710573
Outer CV Seal - 90304-A0001 (no alternate P/N)

The 710477 is a seal that actually is already installed on the hub assembly I believe.

 

From my notes:
90312-96001/710477 goes on the bearing assembly that gets pressed on the hub.
90316-A0001/710573 for the outside seal that gets pressed on the knuckle.
90301-A0005 is the o-ring that goes between bearing assembly and brake dust shield.

$33 43514-28010 Genuine Toyota Parts - Cap, Fr Hub Grease (43514-28010)

43514-28010 grease caps.
90119-A0167 flange bolts; can also use 90119-12369 which are not flanged.

I don't see 90304-A0001 anywhere in my notes; web says it's outside seal for 2003-2005 4Runner and 98-07 Land Cruiser.

I'm on my third set of front bearings. I say don't replace the outside seals (the ones on the knuckle) unless you have rust inside the knuckle. Just put some silicone on the rubber seals and you will be good to go. I replaced driver side but not the passenger side. Requires more work as you have to remove tie rod and sway bar in order to swing the knuckle around to press out the seal.

 

Thank you. There’s hardly any mention of that o-ring in most of the wheel bearing threads I’ve read. Assume people just reuse?

 

use a new oring. Seriously, seals are no place to cut a corner. If anything gets past them your bearing is toast.

 

I hear ya badger. So total parts list coming my way is as follows:

2 - complete wheel hub assemblies
2 - 710573 (knuckle seal)
2 - 90304-A0001 (CV outer dust seal)
2 - 90301-A0005 (O-ring)

1 - ECGS Bushing
1 -

$10 90311-47027 Toyota Oil Seal - 90311-47027

90311-47027 (differential seal)

 

Thanks guys, especially Chuy for the correct list and OP for starting this thread.

I'm pressing together a wheel bearing assembly with a new NSK 54KWH01 bearing.
710477 is pressed on to the bearing before hub.
710573 is the outer seal behind the knuckle.
90301-A09005 O-ring on the inside of bearing.
90119-A0167 (4) bolts.

I also verified this info on a Toyota parts website cross referenced to other sites.

All these parts plus new hub were $120 shipped to my door. Slightly more than the $112 Dorman.

 

And much higher quality!

 

Reviving this. Can anyone point to a write-up or video on replacing these seals? I'll be doing my bearings shortly (from fully assembled units), but I'm still a little hazy on where all these seals and o-rings are.

 

There's a seal between the back face of the hub & the outer face of the bearing- that's installed on the bearing before pressing in the hub, if you're buying assemblies, that's of no concern to you. That's what seals the outer side of the bearing from intrusion from the outside world.

There's an O-ring on the inner side of the bearing, should be included with an assembly. This isn't a dynamic seal, it's just sealing the bearing outer surface inside the knuckle mounting bore so it doesn't rust in there.

The inner seals are a pair. There's a seal on the outer CV joint, which generally comes with new axles. That's the 'only Toyota' seal, which is probably mostly because it rarely needs to be replaced. Then you have the knuckle seal (710573) which is installed on the backside of the knuckle. Those two are what seal the inner side of the (already sealed) bearing from the outside world.

 

Thanks, that makes total sense. So, presumably the one people routinely replace when doing the bearings is the one on the back side of the knuckle, (knuckle seal, aka "outer", 710573)? I need to decide if this is worth the trouble too, since I think it makes the job a good bit tougher than just swapping the bearing assembly.

 

I’d at least buy them. When you pull the bearing assembly if you don’t see any signs of water intrusion, then don’t replace them. If however, you do see signs of water intrusion, you should replace the seals.

Obviously, the best thing to do would be replace them. But we all have to make choices based on judgement sometime. As I said before, I chose not to replace one of mine the 2nd time around.

 

^^^ This 100%.

My own 2 cents: Those seals are like, what, $10 each? So for $20 in parts and a few extra minutes of labor to install, is it worth not having to question whether the old ones are good or bad? Is $20 worth it to not have to tear it all apart later and do it again, or worse replacing another hub bearing? Just do it, you'll sleep easier at night.

 

I ordered them, but is it really just a few extra minutes? I haven't looked in detail yet, but getting the axle ends out of the knuckle didn't sound like a few minute job. I'm not worried about the seal it itself.