72 FJ55 rebuild begins.....I'm going to have questions (3 Viewers)

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So I am an idiot (no surprise there). The stupid washers that go behind the wheel bearings between the axle tube and the wheel bearing. I forgot to put them back in and now the axle is totally assembled. I really don't understand what their purpose is anyways, is it going to kill anything if I just leave them out?

Are we talking rear axle?

Do you have a diagram? I am not remembering the washer.

My initial thoughts are, if Toyota put it in there, there's a reason... 🤔
 
Yes it's the rear axle. They sit behind the outer part of the wheel bearing, if you look at the rear axle diagram it's the #4 part where it shows the axle shaft going in and they seem pointless to me. All it does is space the wheel bearing out like 1mm and MAYBE help catch some oil? Either way I really doubt the bearing fails and even if it does I have to take the whole s*** back apart to replace them anyways. It's just a wheel bearing. Might as well let it fail and replace it later if it does. Same amount of work no extra money since I'd have to buy new seals and bearings to get the friggin washers in there anyways.

Toyota put a lot of stuff in cars that really doesn't matter I know I've removed a lot of it lol.
 
So I am an idiot (no surprise there). The stupid washers that go behind the wheel bearings between the axle tube and the wheel bearing. I forgot to put them back in and now the axle is totally assembled. I really don't understand what their purpose is anyways, is it going to kill anything if I just leave them out?

Probably a type of thrust washer that reduces the side-to-side movement. You’ll probably have to destroy the new bearings to get them off? That sucks. Probably be better than having your c-clips come off and the axle come out going down the road🤷🏻‍♂️
 
Probably a type of thrust washer that reduces the side-to-side movement. You’ll probably have to destroy the new bearings to get them off? That sucks. Probably be better than having your c-clips come off and the axle come out going down the road🤷🏻‍♂️

I doubt that, the inner race slides freely in the outer race. The washer if it did anything would prevent the axle from moving inward but it can't do that with the cross pin installed in the diff.
 
I read up on it on a fj40 thread, as I thought it is only there to prevent the oil from draining back completely when you let it sit for extended periods of time. Has no mechanical function. You know what fixed that? Lucas gear oil. s*** is so sticky it doesn't leave anything it touches.
 
So this kept me up all night, tossing and turning. This morning got up and pulled out Haynes manual. The instructions make no mention of the washer I think you’re speaking of (#4 on the exploded diagram?). It’s supposed to seat in the axle housing behind the “outer race” portion of the bearing.(?)
I don’t understand why it would help stop oil flow if that bearing is dependent on the gear oil for lubrication and you have an oil seal on the other side. To me it looks to set the outer race and bearing at a specific location. How thick is it?
Forgive the ignorance of my previous post, I’ve actually never been into a rear LC axle.

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I don’t understand why it would help stop oil flow if that bearing is dependent on the gear oil for lubrication and you have an oil seal on the other side.
Google "Oil Slinger", "Shaft-Mounted Rotary Seals" or "Oil Flinger"
 
If it presses on the shaft “Axle” then it’s an oil slinger.
 
If it goes in the housing and has shaft clearance then it’s a spacer. If it is a spacer that rides in the housing then it should be put back as it would most likely set the outer race spacing in relation to the inner race.
 
The inner race has a bunch of extra room to go in or out and still ride on the bearings this washer is just a plain jane washer only maybe 1mm thick. It doesn't have anything to do with spacing the wheel bearing to the correct spot. It is definitely an oil slinger. It doesn't rotate it just sits on the back side of the bearing race to provide a backsplash where the oil can make it into the bearing but has a harder time making it back out.
 
The inner race has a bunch of extra room to go in or out and still ride on the bearings this washer is just a plain jane washer only maybe 1mm thick. It doesn't have anything to do with spacing the wheel bearing to the correct spot. It is definitely an oil slinger. It doesn't rotate it just sits on the back side of the bearing race to provide a backsplash where the oil can make it into the bearing but has a harder time making it back out.

Okay, so it helps keep oil in the bearing by creating a dam. This makes sense, but differs from “slinger rings” as I know them.
 

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