oil cooler line replacement

aahmes57 · Post by **aahmes57** » 25 Jan 2011, 10:05

I have both oil cooler lines leaking at the metal fitting going into cooler. Has anyone found a kit available with all the O rings, clamps and wherever else I may need to do the job.

I never did this particular job before but have read a good link from september last year on what to/ not to do. Good stuff.

I may be able to get the lines made for about $30-$40 each so all I'll need is the rest of the stuff to do the job.

I think its 2 o rings and one clamp per line. Is there anything on the oil cooler itself gasket, hose etc, that needs replacing or inspecting besides the o rings?

Also the rear main seal I beleive may be leaking too. Is there a DIY with any photos on the RMS.

Next is the timing belt and water pump kit from FCP Groton, $485 (-10% free shipping) all OEM, ouch! I heard about the seals, they should be OEM. I'm only doing it once.

What about everything else. OEM/AFTERMARKET?

I guess it doesn't end until stage "0" I can't even wear my shirt yet cause I'm so far from there. I hope I don't grow out of it.

Thank you for your continued support.

Post by **jblackburn** » 25 Jan 2011, 10:12

There are clamps at the radiator end (they're like $9 a piece) - and O-rings at the radiator end.

There are seal things at the oil thermostat end, and there is one PITA screw in between there that holds the clamp onto the lines.

Honestly, a dealer may be your best bet for getting all of these parts. I have had trouble with non-OEM O-rings on heater core lines, so I wouldn't use anything else for the radiator lines.

Lee can probably guide you through the RMS replacement if you have to go about that - it is quite involved, as it means dropping the subframe and separating the transmission from the engine.

aahmes57 · Post by **aahmes57** » 25 Jan 2011, 10:46

Thanks, O believe me I don't want to do it but I can't see the cost at a dealer (no offense to dealers, they have to eat too).
I like making $110 an hour when I'm working on it. If I take my time I make more money. LOL

I just did a clutch , slave cyl etc on a 4x4 pick up so the S70 can't be to bad (humm).

I guess I'll get the parts at the dealer. Is there a seal or gasket behing the oil cooler (thermostat)? I'll be removing that to reassemble and instal the new hoses per the guidence in a post in Sep 2010. I guess the dealer will sell me whatever I need and then some.

Thanks for the tips.

"Leak in oil cooler lines at thermostat V70 AWD" by holler1. he posted lots of good stuff on the procedure however, I did read a post that said this may be one of the jobs you want to send out to have done.

wjhandy850 · Post by **wjhandy850** » 25 Jan 2011, 11:12

I got all of my parts from FCP. There is a o-ring type of seal on the back of the thermostat. The hardest part of the job is getting to the bracket, and the hose clamp at the thermostat. I suggest getting a flexable extension to do this repair. It will drive you nuts at times.

aahmes57 · Post by **aahmes57** » 25 Jan 2011, 14:05

Thanks for the tips. I was able to get everything except the oil thermostat gasket. everything else I got from FCP.
Did you do the hoses to or just the o rings? If so where did you buy them at. Kind of pricey on line.

O ring to thermostat 2 ea 968757 $1.86 OEM not in kit
O ring to radiator 2 ea 6842413 $1.99 OEM
clamp at radiator 2 ea 6842411 $4.99 OEM
seal at radiator 2 ea 6842414 $3.06 OEM
there is also a kit for the parts at the rediator $21.40 Aftermarket
shipping $12.06
I got the gasket 1 ea at the dealer $5.13

From what I've read it's a PITA job.

I hope that's all I need, did I miss anything.

Thanks again

Post by **Ozark Lee** » 25 Jan 2011, 14:22

It is imperative that the sockets on the oil thermostat be very clean. Any debris at all will cut the O rings at that end as you install the hoses. In my case the actual lines were leaking so I had to replace them as well and they are not cheap.

...Lee

Post by **holler1** » 25 Jan 2011, 18:00

You probably won't need to replace the rectangular shaped "ring" or gasket that goes behind the thermostat, since it doesn't get any wear. As I suggested in the earlier post, removing the thermostat from the engine makes it easier to get the cooler lines back in the thermostat. Just be very careful and make sure the gasket and the O rings at the thermostat end are seated. I cut one of the O rings when I replaced the lines and had to do the job over. I think majority opinion is that the biggest PITA is the bolt that holds both line brackets onto the engine- get a loooong 1/4" socket extension with a flex joint on the end. It helps to have very small hands too.

aahmes57 · Post by **aahmes57** » 26 Jan 2011, 05:07

Thank you gentlemen, as all would agree I'm sure it's a tremendous help to know certain things going into a project like this.
I want to say that I'll document with photos but I think I may be outside for this one and not sure what the weather will be like.

The lines at the metal ends are where they are leaking at the thermostat side, so I will be replacing the lines as well. I have a hydraulic guy close by that I think can make them for me for around $30-$40 each. Otherwise your right they are pricey. I hope to get this done for less than $125 and a day, probably a long day.

Thanks for all your advice and guidance.

aahmes57 · Post by **aahmes57** » 02 Feb 2011, 10:35

Well here is an update on the oil cooler lines. The guy I thought could make them, could not, so I had to order the hoses.
I was fortunate to find a friends garage but having to order the parts got me pushed out for a brake job. Once I get the parts I can finish the assembly portion of the job. I did the best I could with the photos, some cell phone some camera. I hope it makes sense. Its basically the exact same thing that holler1, Ozark Lee, wjhandy850 and jablackburn said only with a few pictures.
I’ll post the assembly when I do it. Probably over this weekend if I get the parts.

Post by **holler1** » 02 Feb 2011, 19:01

Some pictures of the oil cooler line connectors, line bracket bolt, oil thermostat, etc