92 fj80 Gear oil leaking from rear lug nuts, I removed the lug nuts and gear oil started coming out. What causes this?
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gear oil leaks from lug nut
- Thread starter doublebuck
- Start date
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Gotta be your axle seals at the root of it all. But sound like your drive flange gasket is leaking too. Time to get dirty!
- Thread starter
- #3
Can I still drive for a while or does it need attention right away?
Thank you
Thank you
How much gear oil did you lose? You sure it's gear oil? Stinks like nothing else?
You should at least check your diff oil with the plug in the face of the diff.
You should at least check your diff oil with the plug in the face of the diff.
- Thread starter
- #5
I'm guessing half a cup came out..stinks like gear oil and kinda thick. I'll check the diff fluid tomorrow.
You have gear oil inside your brake drums now, so I wouldn't let this go too much longer. You'll need to replace the brake shoes in any case.
This is an involved job. You need to replace the rear axle seals on a semi floating axle. Chances are the reason the seals went is because the bearings are starting to go. I would order axle seals and wheel bearings for the rear.
These are c-clip axles which are accessed through the rear diff cover. Remove the pinion cross pin, push the axle toward the diff and the clip will drop out. Keep the c-clip with the axle it came from as they come in different thicknesses.
You'll need to fabricate or purchase a bearing puller to remove the wheel bearing that is pressed into the axle tube on each side. The new bearing can be driven in with the correct size socket and a rubber mallet. Lube with fresh gear oil.
The entire procedure is documented step by step in the FSM.
USE OEM PARTS.
This is an involved job. You need to replace the rear axle seals on a semi floating axle. Chances are the reason the seals went is because the bearings are starting to go. I would order axle seals and wheel bearings for the rear.
These are c-clip axles which are accessed through the rear diff cover. Remove the pinion cross pin, push the axle toward the diff and the clip will drop out. Keep the c-clip with the axle it came from as they come in different thicknesses.
You'll need to fabricate or purchase a bearing puller to remove the wheel bearing that is pressed into the axle tube on each side. The new bearing can be driven in with the correct size socket and a rubber mallet. Lube with fresh gear oil.
The entire procedure is documented step by step in the FSM.
USE OEM PARTS.
- Thread starter
- #7
I was looking at my fsm last night, just wanted to diagnose the problem before I start ordering parts. Thanks guys, time to get dirty.
- Thread starter
- #8
Here's a picture inside my brake drum.
Here's a picture inside my brake drum.
Well, yea. What did you expect to see??
You did confirm that this is in fact gear oil and not brake fluid...correct??
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- #10
Looks like its coming from the hole that next to the studs. When I spin the axle I hear a sound, must be the bearings? The other side is nice and dry.
The thing that is on top of the hole leaks a little bit when I took the shoe off.
The thing that is on top of the hole leaks a little bit when I took the shoe off.
- Thread starter
- #11
Its not the axle seal it's the wheel cylinder, had someone step on brakes and one of the boot leaked like a fountain. Should be an easy fix. Thanks guys!
Well, without a drum it will hyperextended the brake cylinder and shoot out fluid.
I'm hoping that's all it is, but I would take a closer look at the back side of that hub first.
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- #13
Back side of hub is dry
- Thread starter
- #14
It's shooting fluid from the rubber boot
- Thread starter
- #15
Checked diff fluid level is good and brake fluid is low
There should be a wheel cylinder rebuild kit available from Toyota. Make sure you do both sides.
- Thread starter
- #17
Parts order thanks
