Small leakage at the rear diff yok

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Jul 24, 2020
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Hi All,
I notice a small oil leakage at oil retainer of the rear differential (where it connects to the driveshaft) - picture included.
Recently I got the oil change in the diffs - can it be connected? something that wasn't tighten correctly?

Its a 2008, LC200.
IMG-20220616-WA0009.jpg
 
Joined
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Round Rock, TX
Any leak from there is most likely the seal on the front of diff. I would do what you have done so far clean it off and check it every 1 to 4 weeks and see if it returns and how much. This is youtube link to video on replacing the front seal for most Toyota diffs.
 

turbo8

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Breather on the 200 isn't attached to the axle housing like the taco. It is attached via a breather hose that locates it up higher on the frame.

Also, make sure the the rear diff isn't over filled. Park on level ground and remove the upper fill port. If fluid starts coming out of the fill port, it is over filled.
 
Last edited:

bloc

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Definitely check the level, as @turbo8 says over filled can cause it to leak. Plus yes the breathers.

In my mini truck days I replaced a bad diff seal without pulling the whole pinion and changing the crush sleeve by simply loosening the nut, remove the flange, change the seal, then tightening it back to the exact spot it was in before. This is pretty easy with the indent/stake toyota sets to keep the nut from backing off. If you do this make sure you put the flange back in the exact orientation it was in (same splines, don't rotate it from the original position) just to try and ensure the same nut position means the same clamping force and therefore preload. It should all be parallel and not matter, but just in case..

Also, check for play in the pinion shaft. The bearings losing preload can let the shaft wobble around and that will definitely cause a leak. No idea why this would pop up just after a change, but good idea to check.
 
Joined
Jul 24, 2020
Messages
45
Location
Israel
Definitely check the level, as @turbo8 says over filled can cause it to leak. Plus yes the breathers.

In my mini truck days I replaced a bad diff seal without pulling the whole pinion and changing the crush sleeve by simply loosening the nut, remove the flange, change the seal, then tightening it back to the exact spot it was in before. This is pretty easy with the indent/stake toyota sets to keep the nut from backing off. If you do this make sure you put the flange back in the exact orientation it was in (same splines, don't rotate it from the original position) just to try and ensure the same nut position means the same clamping force and therefore preload. It should all be parallel and not matter, but just in case..

Also, check for play in the pinion shaft. The bearings losing preload can let the shaft wobble around and that will definitely cause a leak. No idea why this would pop up just after a change, but good idea to check.
updates on the rear diff leakage:
it stopped. I checked the level of the diff oil and its full.
no play in the shaft at all.
very strange.
any thoughts?
 

bloc

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Sep 19, 2008
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9,659
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Central Texas
updates on the rear diff leakage:
it stopped. I checked the level of the diff oil and its full.
no play in the shaft at all.
very strange.
any thoughts?
I’d just keep an eye on it for future leaks or noises.
 

CharlieS

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Feb 4, 2005
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6,114
My guess is a foreign object in the seal to metal interface caused a temporary weep. It is likely gone now, so the seal is working as designed. Just a guess though...
 

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