Oil Cooler Hose Replacement

MatDesign84 · Post by **MatDesign84** » 28 Feb 2012, 19:09

auctions.volvospeed.com/DISCOUNT-9498-850VSC70-Turbo-Cooler-Lines--3-Money-Saving-Options,name,100046,item_id,0,ad_type,ad_detailsOkay I just finished this job and have a tip that will save a lot of time and effort for everyone. I too was having a touch time getting the torx head bolt off at the thermostat and tried everything. I got to thinking of some old advice from dad for a similar situation and voila it worked. I managed to use a 4mm (may have been 6mm) allen wrench to get it off. I also used this method to get it back on again.

robocam · Post by **robocam** » 04 May 2012, 00:09

I just tried to remove the two torx bolts through the wheel well, and I think I may have stripped the inside of the holes. Normally I would use a Dremel to cut slots into the bolt heads and use a standard screwdriver to remove them, but the area is too tight for that. I thought about using a drill bit to drill the heads off, but how do I remove the rest of the screw? I wonder if once the heads are off, if the studs would be easy to remove. Does anyone have any other ideas on how I might get those two bolts out? I hope I won't have trouble with the 4mm bolt holding the lines in. Thanks in advance.

Post by **holler1** » 04 May 2012, 20:03

Maybe a small Ez Out (screw extractor)? What size Torx did you try? I got mine out with a #30.

Post by **xHeart** » 22 Apr 2013, 11:33

robocam wrote:I just tried to remove the two torx bolts through the wheel well, and I think I may have stripped the inside of the holes. Normally I would use a Dremel to cut slots into the bolt heads and use a standard screwdriver to remove them, but the area is too tight for that. I thought about using a drill bit to drill the heads off, but how do I remove the rest of the screw? I wonder if once the heads are off, if the studs would be easy to remove. Does anyone have any other ideas on how I might get those two bolts out? I hope I won't have trouble with the 4mm bolt holding the lines in. Thanks in advance.

Oops...

I had struggled with the two torx screws on thermostat, first timer.
The design was such that the screw did not thread at the hosing cover, just passes through it. And then it would screw into the lower housing. Thanks to Ozark Lee for this info.

I was successful with the 1/4" left-handed-drill-bit, making counter-clockwise rotations to help it pull out at the same time, using oil to lubricate. Choose a bit size wider than the shank.

Post by **jreed** » 23 Apr 2013, 04:54

I guess I got lucky when I removed my oil thermostat a couple weeks ago. I used the tool set up shown below.

: T40 bit + 1/4 socket + 1/4 extension; VolvoOilCoolerLines07.jpg (140.94 KiB) Viewed 1641 times

If it is of use, you can check out the DIY guide I wrote up here:
https://www.matthewsvolvosite.com/forums ... 4&p=282639

Post by **98T5** » 23 Apr 2013, 08:08

HOw much oil and coolant is lost during this repair. I'm about to order my lines this week and get it done.

thanks.

Post by **holler1** » 23 Apr 2013, 10:07

There should be no coolant loss, and only a little oil coming out, basically oil in the lines. I think most of the oil drains back into the engine when it isn't running.

Post by **jreed** » 23 Apr 2013, 16:44

+1 on that! I measured about 1/3 of a liter of engine oil coming out of the thermostat and lines, and there was more still in the lines and more that I wiped up on towels during the job. You won't need more than 1 liter of oil for topping up with at the end, assuming you don't remove the oil filter and drain out all the engine oil.
I would recommend removing the oil filter so you can lower the oil thermostat down and out more easily.

Scott_850T-5 · Post by **Scott_850T-5** » 06 Aug 2013, 16:28

So I've gone through all of the posts on this and I have a slight twist as far as issues go. I'm also leaking radiator fluid from the top oil cooler line, where it attaches to the radiator. Does this mean I need a new radiator? Its a very small bubbling weep...best way to describe it. Just noticed it the other day as it finally gave me a low coolant warning. So its not loosing a lot. Is there an easy repair, or is this a complete radiator replacement?

Side note this is after having a new A/C condensor put in at a shop in NC. Then I drove across the country, moved to CA. Just noticing the coolant leak now that the car is in a garage.

Thanks in advance guys.

Post by **jreed** » 06 Aug 2013, 16:50

It sounds like a leaking radiator. If you can, post a close-up photo.

Oil Cooler Hose Replacement

Re: Oil Cooler Hose Replacement