Hello everyone!
Finally got around to changing the oil in the differentials and transfer case, since I haven't done it since purchasing the car. Thought for a long time what to pour - eventually poured original.
By part numbers and names:
In the rear differential - Toyota 75w-85 LX - 2l, catalog number 0888581070;
In the front differential - Toyota 75w-85 LT - 1l, catalog number 0888581060;
In the transfer case - Toyota LL80 - 1l, catalog number 0888581086.
Honestly I can't understand why Lexus/Toyota recommends pouring oil LX, intended for LSD, into a rear differential with an open differential.
So basically got this set:
Also bought sealing rings for drain/fill plugs. They are the same on the front and rear differentials but different on the transfer case.
Sealing rings for plugs of the differentials — 215710010 — 4pcs;
Sealing rings for plugs of the transfer case — 9043018008 — 2pcs.
Getting started with the replacement. I lifted the car on a lift, removed plastic and aluminum shields. Started with the transfer case. Took a hex key size 10 to unscrew the drain plug and drained the oil.
Doesn't look too dirty. Cleaned the magnet, installed new sealing ring, cleaned the adjacent surface and screwed in the plug with torque 49 Н*м.
Proceeded to fill it up. Used for this a large syringe and a piece of hose.
It's quite convenient to reach. The oil volume in the transfer case is 0.7l, filled until the level of the fill plug or 5mm below it.
After filling cleaned the fill plug, installed new sealing ring. Screwed it back with torque 49 Н*м.
Then I proceeded to change the oil in the rear differential, here things are not as convenient. For convenience I removed the right plastic dust cover (holds on three M6 bolts). Unscrewed the drain plug and drained the oil.
Judging by its color, this was definitely not original LX poured here.
There's a small layer of residue on the magnet.
Cleaned it up, installed new seal and screwed it back with torque 49 Н*м. Unthreaded fill plug and filled in oil using the same method. Working with a plastic can is much easier.
Oil volume in the rear differential - 1,35l. Level - similar to that of transfer case - until level of the fill plug or 5mm below it. Cleaned the plug, installed new ring, tightened the plug with torque 49 Н*м.
Then cleaned up oil traces on the differential with NeutraSolve, by the way, I did the same for the transfer case.
Reinstalled plastic dust cover back on, work on the rear differential is complete.
Left to do front one - most difficult. Unscrewed drain plug and drained the oil.
There's also some residue on the magnet here.
Cleaned it up, installed new sealing ring and tightened the plug with torque 39 Н*м. The hardest part - unscrewing the fill plug. Hard because it's extremely inconvenient to reach it.
To get to it I removed plastic shield from steering rack wires and somehow managed to fit hex key size 10 into the fill plug.
Proceeded to unscrew it with an extension over subframe, connected to hex key.
This is much more convenient to do so.
Unscrewed fill plug, started filling in oil.
Oil volume in front differential - 0.75l. Level determined similarly for transfer case and rear differential. After filling cleaned the fill plug, installed new sealing ring and tightened it with torque 39 Н*м. Then everything was wiped up with NeutraSolve.
Hooray! These parts are now serviced! All that's left is to check brake fluid condition and car will be fully serviced!
Ready!
In the course of this maintenance, I noted two oddities for myself:
The first one is why LX oil needs to be poured into the rear differential;
The second is why the tightening torques in the transfer case and front differential are different, even though both are aluminum. Well, never mind, I hope there really is some sound logic behind this.
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