Transmission and transfer case breathers found! US specs LX570. Photos.

[airdzi]

What were the Toyota engineers drinking?

You would need well trained monkey to do the replacement job. Short of removing the intake manifold I truly have no idea how to perform the breathers swap.

Well took me forever to find them, so the photos below.

1. Suspend yourself from the engine lift over the intake manifold. Just kidding. Remove MAF sensor wire and engine cover holder rod - 2 10mm bolts.

2. You would be laying down over the airbox standing on the step tool of some sort.

3. Look for the indentation right in the center of the firewall insulator panel, right in the center of the engine bay. That is where your left hand would be diving.

4. Look for the engine ECU wire harness, grey color corrugated protector, about 1.5 inch thick. It is marked green in the photo, it intersects with another bundle (marked blue) going to right cylinder head.

5. Your hand needs to dive under the thick wire harness and reach towards the engine block.

What a nightmare location for the breathers to save a foot of hose length. To make things even worse one of the transfer case breathers is mounted inches below the other 2. Upper bracket has room for it but no dice.

I got new breathers on hand but did not figure out how to do the swap. All i was able to do was to spray some silicone down and get the metal caps to move loosely, just like knew ones do. Transmission breather is all plastic with no moving parts.

Snake camera photo of breathers included.

 

[airdzi]

More snake photos of the actual breathers, orientation of snake camera can be confusing, so the order is that 1. Transmission brether is towards passenger side 2. Long transfer breather in the center 3. Shorty transfer breather towards driver side (US). Bracket holding breather lines is attached to the block and NOT to the firewall.

 

[fullybalanced]

Nice work

 

[grinchy]

Bookmarking for future breather work. One day I’m going to join them into my dorkel.

 

[airdzi]

I also found below reference illustrations within the FSM, under automatic transmission , see photos, as you can see hoses are right in the center, shorter transfer hose is on the driver side.

Interesting , both transmission and transfer have 2 breather ports. There is clearly a T fitting and one port on the transfer connects to the T fitting at the rear end of the transmission and 3rd leg goes to the shorty breather 3. .

 

[VooDoo2]

Not a lexus but same principle and same locations

 

[airdzi]

Not a lexus but same principle and same locations

View attachment 2530653

View attachment 2530654

View attachment 2530655

View attachment 2530656

View attachment 2530657

Saw your post before and spent time looking from down below, no dice, hard to squeeze a finger without removing A/F sensor and even with that manifold heat shield is blocking it from any reach and they terminate over a foot above. Also yours appear to be even length so maybe non US version. Truly dumb location as breathers should be maintenance item replaced every few years and in case of snow and salt every 1-2 years. They are cheap and when they freeze closed due to rust or crud they can ruin your driveline seals and gaskets, either way $3000 job at the dealer to drop the transmission and transfer case assembly, split apart and replace seals.

Also tested new replacements and transmission breather is open end 2 way atmospheric pressure, the 2 with caps are open up only (air out but not in) and it sure seems like they allow little pressure build up before they release but I could be wrong on that.

 

[CharlieS]

@VooDoo2 looks like they're accessible from below with the exhaust removed. Do you reckon it is still accessible with the down pipe in place?

I've been collecting parts to add extended breathers, but haven't gotten to the job yet.

Do you know the hose barb size you used on the vehicle side? I'm planning to use 1/4" ID fuel line (more flexible than the semi hard hose that came in the kit I got), and have 1/4" barb to 1/4" NPT where the hose meets the new manifold rather than the push in hose connects). Looks like I'll need some dual barb connectors for these junctions too, so I'm trying to figure if they'd be 1/4" to 1/4" or 1/4" to something else? Looks like there are two, maybe three or four different barb sizes in that photo.

 

[Fisher23]

Not a lexus but same principle and same locations

Could you please tell me how many breathers there are?

Are there 5 or 6 or ?

Is there a breather needed for the starter motor?

 

[CharlieS]

Could you please tell me how many breathers there are?

Are there 5 or 6 or ?

Is there a breather needed for the starter motor?

Just one thought - those two metal ones on the far right are different ends of the breather on the rear diff housing - one screws into the diff housing, the other is the breather vent that is on the other end of that hose.

 

[Fisher23]

Just one thought - those two metal ones on the far right are different ends of the breather on the rear diff housing - one screws into the diff housing, the other is the breather vent that is on the other end of that hose.

I found it ...

There are 6

2 Diff's
1 Transfer
2 Gearbox
1 Starter motor breather


Down on Post 15 on this link

Diff (and other) Breather Extensions

forum.ih8mud.com

 

[airdzi]

I found it ...

There are 6

2 Diff's
1 Transfer
2 Gearbox
1 Starter motor breather


Down on Post 15 on this link

Diff (and other) Breather Extensions

forum.ih8mud.com

Add 2 for AHS by the fluid reservoir if tour car’s equipped

 

[CharlieS]

So how are you venting five breather hoses when most breather manifolds max out at four ports? Are you teeing lines ahead of the manifold?

 

[highfructose]

So how are you venting five breather hoses when most breather manifolds max out at four ports? Are you teeing lines ahead of the manifold?

i just bought two cheap 4 vent ones and plan to not use all the ports.

 

[Fisher23]

Add 2 for AHS by the fluid reservoir if tour car’s equipped

What does AHS stand for? American Horror Story?

 

[airdzi]

What does AHS stand for? American Horror Story?

Active Height Suspension on all Lx and late Cruisers

 

[Fisher23]

thanks

 

[NoClue]

Active Height Suspension on all Lx and late Cruisers

There are no late model land cruisers with hydraulic suspensions in the US