how to tear down and rebuild a Mitsubishi TD06 20G turbo

[NHMR2]

ok guys, figured id make a tech thread to show how to tear down and rebuild a mitsubishi TD06 20G turbo.

(i believe these instruction can help with many other similar turbo's such as the TD05h and 14b and 16g turbo's and a couple more) take these instructions with a grain of salt, as i will try my best to explain things simply and thoroughly.

first things first, some tools youll need.

snap ring pliers
flathead screwdriver
knife or a small pick (for the old seals)
10mm wrench or socket
14mm wrench or socket
paper towels of course



first start off by removing the turbo from the manifold if you havent done so already.



then remove the oil/coolant lines. my 20g has AN fitting so it may be different from yours.



next, remove your wastegate. there will be a boly holding the braket to the compressor housing, and also a small snap ring at the eng of the WG rod. my 20g has the WG welded shut because i have an external WG

[NHMR2]

the next step, is to use your 10mm socket to loosen and remove the clamp holding the turbo housing. after removing the clamp, be careful when you remove the turbine housing. it may require soft taps with a mallet.



when removed, this is what you should have



next, flip it all over. its time to remove the compressor housing. use your snap ring pliers to do this. once the snap ring is removed, you can remove the compressor housing. be careful not to hit the compressor wheel when you remove the housing!





then you will have your center housing alone

[Dagazenterprise]

Lookin good

[NHMR2]

next, use your 10mm socket or wrench and the (mine was 14mm) wrench or socket on the other side of the turbo shaft. pay attention to which way the threads are going!!! more than likely, the 10mm nut is a reversed thread! so right to losen, left to tighten!



next, remove the compressor wheel. if you cant pull it off by hand, coax it a bit with the flatblade. BE CAREFUL not to damge the compressor wheel!



next, slide the turbine and turbine shaft out of the center housing. it should slide out by hand but may need light tapping on the opposite end of the shaft or a light pry from the flatblade.

[NHMR2]

next remove the bearing off of the turbine shaft



then remove the heat shield



next, remove the turbine seal housing. mine was still attached to the turbine shaft, your may still be in the center housing. if its still in the CH, leave it. its probably fine. but of course, make sure its in good shape and clean.



next step, take the turbine seal off of the shaft by "walking" it out. (lift one side and vice versa to get it out of the groove. heres a pic of where the turbine seal is



once thats done, turn your attention back to the center housing

[NHMR2]

now, get your snap ring pliers back out, and take out the small snap ring in the Center housing that is holding the oil shield in place.



then being gentle, and working your way around, use the flatblade to lift up and remove the oil shield.



next youll see the turbine ring and its carrier as well as the thrust bearing. it will likely fall out once you take the oil shield out. walk the turbine seal (piston ring) off of its carrier to seperate the three parts. i removed these things before i took the turbine shaft out of the center housing as you can see in the pic



when out, this is what you should have

[NHMR2]

next step, remove the thrust plate. you may have to remove the oil seal first to get it to slide past. which is fine because you should be replacing that anyways. once again, in the pictures, i had kept my turbine shaft in while removing these parts



if need be lightly lift up the thrust plate with the flatblade



once removed, take out the thrust plate collar and then the journal bearing behind it. self explanatory really.



bearing

[NHMR2]

once its all out you should have a fully torn down TD06. if you want or need to, you can remove the journal bearing retainers which you can see in this next pic. use snap ring pliers.



once its all out, keep track of everything and where it goes! this is what you should hav e. a completely dasassembled TD06 20G

[Boosted Euro]

Nice write up, gimme that impeller !

[NHMR2]

you need one?

[Boosted Euro]

Yea, when I pulled the motor last time I noticed a chip in 1-2 of the blades. Wasn't there when I installed it 2k miles earlier. Sucked something up somehow .

[ill_eagle94]

The bearings look good, the seals look a bit iffy though.

[Zoom6]

Nice write-up.

[Boosted Euro]

Should have reserved a bunch of posts so that you could finish without the comments in the middle though.

[NHMR2]

Yea, when I pulled the motor last time I noticed a chip in 1-2 of the blades. Wasn't there when I installed it 2k miles earlier. Sucked something up somehow .

That sucks. You could probably geta replacement for cheap no?

The bearings look good, the seals look a bit iffy though.

Seals are pretty good too. The oil seals (or piston rings) were in question but also looked pretty good. The turbo had zero miles on it.... :/ so everything should be good

Should have reserved a bunch of posts so that you could finish without the comments in the middle though.

Ya... Didn't really think about that.. LOL