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Old 01-11-2017, 09:13 PM
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Default Oil cooler seal question

I am needing to replace the seal/o-ring/gasket whatever you wish to call it and have a few questions before I start, hopefully someone here can answer them.
As I understand it, I need to remove the filter then the nut that holds the cooler on the pipe that the filter mounts on, that nut uses a 27mm deep well wrench as I am told, supposedly one can remove the pipe using pliers with leather on the jaws to keep from buggering the threads, then the cooler is freed and the old seal cleaned and the new one put in place, I have been told that in order to re-install the pipe that it is best to use a second nut as a backer nut, What size nut do I need? Every place I see the part diagram the nut part number is for a 2.5 not a 2.0 engine. If I am to buy the nut online as no place locally sells them what part number do I order? and Where can I get one CHEAP, used would be great in fact. The nut is number 15 in this illustration

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Old 01-11-2017, 09:27 PM
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Default Oil cooler seal question

Looks like the nut is cheap @ $3: vw part # 068115723

Based upon vw's parts site; the nut seems to be same for the 1.8t, 2.0l and the 2.5l engines.

When i replaced my oil cooler o-ring; i didn't remove the pipe, it was tight and i didn't see the need to remove it. In my case, i removed my oil cooler; as i wanted to take the extra step; as a precaution, to pressure test it and see if there were any leaks in the oil or coolant passageways. My cooler, ended up being leak free and air tight; so, it passed with flying colors. If you skip the removal and testing; it would take less time and dismantling, removal of coolant hoses, refilling coolant, etc.

I tightened the nut with a torque wrench and called it good; i haven't had any problems since then. I went with a victor reinz o-ring and got it from autohaus arizona.

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Last edited by billymade; 01-11-2017 at 09:54 PM..
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Old 01-11-2017, 10:13 PM
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Thanks, every place I went to said that part number was not for the 2.0, so I guess they miss out on sales. I see no need to remove the hoses so am assuming that the pipe has to be removed to access the seal and replace it. I will shop around and find the best price including shipping for the nut now that I am sure about the part number. The seal is available many places, even through Autozone and Advance so getting it is no problem. Really a PITA though as the weather is not so good for working on the car.
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Old Yesterday, 07:29 PM
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Ordered the gasket but am still waiting. I decided to go ahead and take it apart so it would take less time to get the job done once the gasket arrives. I am having real trouble getting the union pipe to break loose, the cooler will not slide down enough to access the top for the gasket so that tube has to break free. Tried vice grips with leather on the jaws and can not get it to budge, GRRRRR
The gasket was supposedly mailed from a place that is about a three hour drive from here on Thursday yet it has not arrived.
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Old Yesterday, 11:54 PM
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It is pretty easy if you drain the coolant and remove the hoses. With mine, there was almost enough play in the coolant hoses to get it off without draining but I decided not to try. You might try loosening the clamps and moving the end of the hoses a little toward the end of the pipes to give more slack. You'll have to be careful not to pull a hose off the pipe as you remove the cooler or you'll be draining the coolant after all.
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Old Today, 05:50 PM
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Default o-ring

Quote:
Originally Posted by john.reid View Post
I am needing to replace the seal/o-ring/gasket whatever you wish to call it and have a few questions before I start, hopefully someone here can answer them.
As I understand it, I need to remove the filter then the nut that holds the cooler on the pipe that the filter mounts on, that nut uses a 27mm deep well wrench as I am told, supposedly one can remove the pipe using pliers with leather on the jaws to keep from buggering the threads, then the cooler is freed and the old seal cleaned and the new one put in place, I have been told that in order to re-install the pipe that it is best to use a second nut as a backer nut, What size nut do I need? Every place I see the part diagram the nut part number is for a 2.5 not a 2.0 engine. If I am to buy the nut online as no place locally sells them what part number do I order? and Where can I get one CHEAP, used would be great in fact. The nut is number 15 in this illustration

#13, is tha the o-ring that ususally leaks with time? anyone?
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