2000 BMW 740 Oil water separator

KCBROSR

MEMBER
2000 BMW 740
V8
2WD
AUTOMATIC
152,390 MILES

What is the oil water separator bolted to inside the timing chain housing? My oil water separator recently discintagrated inside of the timing chain housing. All that is left is the top piece that attaches to the vent pipe and the piece where the hex bolt goes. What I don't know is what is attached to the bolt. The oil separator P/N is 11 15 1 705 272. The bolt P/N is 07 11 9 904 524. I know that the bottom would attach to the oil pipe outlet.

4 Replies

DOCHAGERTY

MECHANIC
9,601 POSTS

https://www.2carpros.com/makes/bmw/740
Here is a link I use all the time.
The timing cover will likely require removal to get the part out.

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Thursday, June 24th, 2010 AT 12:31 AM

KCBROSR

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3 POSTS

Thanks Dr. Hagerty. I've already gotten the part out. I'm ready to reassemble everything now, but don't know what is attached by that bolt to the oil water separator. I've seen that diagram, and it doesn't show what is supposed to be attached.

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Thursday, June 24th, 2010 AT 6:40 AM

DOCHAGERTY

MECHANIC
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The separator does not interact with water or coolant, it is for the condensation of oil vapor back into liquid. In the link, what part number/description are you talking about? If you are talking about the grub screw, it pushes against the case to hold it in place.

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Thursday, June 24th, 2010 AT 9:55 AM

KCBROSR

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Thanks again Dr. Hagerty for your reply. It is not the grub screw I'm referring to, rather it is P/N 07 11 9 904 524. It screw into the oil water separator near the vent pipe connection. It would appear that something should be attached to that screw which should secure the oil water separator in place inside the timing case housing. The diagram doesn't show what would be attached to the screw.

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Thursday, June 24th, 2010 AT 10:04 AM