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How to disassemble you Garrett T3 turbo - Printable Version

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How to disassemble you Garrett T3 turbo - boosted ej8 - 03-22-2009 05:17 PM

Alright so since its rainy and over cast today in the good ol' sunshine state I figured I would go ahead and do something I have been meaning to for quite some time.

A full tear down of one of the more common turbo's
The Garrett T3 .42/.48 turbo found on Most Saab and Volvo's

Attention; This is my method to disassemble a turbo. This is not sanctioned nor through Garrett or any other turbo manufacturer, If you so choose to use this write up as directions then do so at your OWN risk. I will not be held responsible for ANY damage done to YOUR turbo.
Thank you

2 full shots of the Turbo pre-tear down
[Image: DSC_2297.jpg]


[Image: DSC_2298.jpg]



Compressor side housing clamps;
[Image: DSC_2301.jpg]

Remove the two 9/16 or 14mm bolts on each section to free the compressor housing.

You will then be left with this;
[Image: DSC_2302.jpg]


Then to remove this nut it is best to use the close ended side of a 10mm wrench
[Image: DSC_2303.jpg]

You will need to put a 9/16 wrench on the turbine side of the turbo blade bolt and turn in opposite directions
This is what I call ass backwards; because you need to turn the nut to the right to loosen it and to the left to tighten it like on most rotating assemblies. You may then pull the compressor side blade off by pulling it straight up.

You will then be left with this;
[Image: DSC_2305.jpg]


You will then need to remove the four 8mm bolts under the compressor housing disc;
[Image: DSC_2306.jpg]

Using the closed ended side of the wrench to break them loose then the open ended side to fully remove them works best.

You will then be left with this;
[Image: DSC_2308.jpg]

You will now have a oil feed disc which just pulls right off

You will then be left with this;
There will be two star screws the require a T-20 star head bit to be removed
[Image: DSC_2310.jpg]



You will then be left with this;
[Image: DSC_2311.jpg]




There is a spring lock washer that sits in a groove that must be removed;
[Image: DSC_2315.jpg]


This was honestly the most difficult part for me as I did not have the proper tools to remove the washer
I know they make pliers that have little tips made for removing these but as I did not have any a pair of tweezers a .050 hex key and a set of needle nose pliers made do. I would NOT recommend this method.

You will then need to remove the turbine side clamps.
[Image: DSC_2316.jpg]

Same size as the compressor side clamps 9/16 or 14mm

You will then be left with this;
[Image: DSC_2317.jpg]


You then remove the actual CHRA or Center Housing & Rotating Assembly by pulling it straight up, you will then be left with this:
[Image: DSC_2318.jpg]


You then pull up on the dish like tray, and remove it;
[Image: DSC_2319.jpg]


You will then be left with this;
[Image: DSC_2320.jpg]


You then simply lift the turbine wheel and shaft and you are left with this;
[Image: DSC_2321.jpg]


Now go wash your hands because they will have some grease on them, unless your turbo is brand new.


RE: How to disassemble you Garrett T3 turbo - IAD_ek - 03-22-2009 09:20 PM

Now rebuild the som' bitch and sell it

I know there are a couple of people on here that could use it


RE: How to disassemble you Garrett T3 turbo - Gimmezell - 03-22-2009 09:24 PM

Thank you for the How-to Daniel.


RE: How to disassemble you Garrett T3 turbo - Cardr - 03-22-2009 09:33 PM

Very nicely done Daniel!

i especially enjoyed your struggle with the snap ring....lol


RE: How to disassemble you Garrett T3 turbo - boosted ej8 - 03-22-2009 10:32 PM

(03-22-2009 09:20 PM)IAD_ek Wrote:  Now rebuild the som' bitch and sell it

I know there are a couple of people on here that could use it

Haha it has maddd shaft play but Ive actually been thinking about rebuilding it
its a journal bearing so it wouldn't be hard

(03-22-2009 09:24 PM)gimmezell Wrote:  Thank you for the How-to Daniel.
No problem that's what I am here for
I don't think many people know what a turbo is because it had a fair amount of views but no responses?
Idk ill have to make a new thread explaining what it does or something

(03-22-2009 09:33 PM)Cardr Wrote:  Very nicely done Daniel!

i especially enjoyed your struggle with the snap ring....lol

Thanks man I still want to throw this bad boy on the D series but idkkk haha and yes that thing was a pain in my ass big time.
Proper tools make all the difference
Like using a 12 sided closed ended wrench on the compressor side rod nut was cake because well its a 12 sided nut


RE: How to disassemble you Garrett T3 turbo - eee-jay-ate - 03-23-2009 09:12 PM

good write up, i will probably give this a try on my old t25, should be somewhat similar


RE: How to disassemble you Garrett T3 turbo - boosted ej8 - 03-23-2009 11:09 PM

thanks man, I would assume it would be the same since they are both t series AND both going to be journal bearing so it should be close to the same


RE: How to disassemble you Garrett T3 turbo - EsotericImage - 07-09-2009 01:50 AM

Good to know and nice write up! Goodjob


RE: How to disassemble you Garrett T3 turbo - boostedEJ8 - 08-05-2009 07:52 PM

good write up man, what was wrong with the turbo?


RE: How to disassemble you Garrett T3 turbo - cricket - 08-05-2009 08:04 PM

(08-05-2009 07:52 PM)boostedEJ8 Wrote:  good write up man, what was wrong with the turbo?

he said it had shaft play. thats when there is too much movement side to side and in an out of the compressor/turbine wheels. the turbo will have poor performance, as well as possibly touching the housings which is bad!