Upper Oil Pan Solenoid Valve Function - BMW M5 Forum and M6 Forums
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post #1 of 72 Old 10th March 2009, 01:30 AM Thread Starter
BMWBIZ
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Upper Oil Pan Solenoid Valve Function

Hey All,

The beast has been slowly seeping oil on the bottom of the oil pan. At first I thougt it might be the oil pan seal or valve covers leaking down. They both are fine. The leak turned out to be coming from the solenoid valve located on the side of the upper oil pan. The valve housing is made of a metal cylinder sleeve with a plastic end cap. The oil is seeping from the area where the plastic is pressed into the metal cylinder.

Question is: what exactly does this valve do? Realoem.com and getbmwparts.com both describe the part as just "solenoid valve". Anyone ever replace these.

RealOEM.com BMW E39 M5 Oil pan upper part and connecting lines
Part No# 1

Thanks
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post #2 of 72 Old 10th March 2009, 02:07 AM
TMcNasty
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Can you get the o-rings separately? 2, 3, 4, and possibly 5? Those are probably degraded. I'd think if that solenoid valve was defective it'd throw a code. If you're only battling a minor leak I'd say just get the o-rings.

Last edited by TMcNasty; 10th March 2009 at 02:09 AM.
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post #3 of 72 Old 10th March 2009, 04:14 AM
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If I were to guess, I'd say it's one of the two solenoid valves used to switch to the scavenging pumps during high G turns.

described below:

The two additional pumps only supply the oil
sump with the scavenged oil.
Each additional oil pump incorporates a solenoid
changeover valve that is connected to two
scavenging tubes routed to the rear section of
the oil pan and the outer edge of the cylinder
head.
The scavenging tubes in the oil pan crossover
so that the right side pump draws from the rear
left side of the pan and the left pump from the
right side of the pan.
The solenoid changeover valves must be
removed before attempting to remove the oil
pan. The valves insert directly into the scavenge
pump housing through the oil pan.

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post #4 of 72 Old 11th March 2009, 11:49 PM Thread Starter
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Thanks Bimmernut1, I suspected those solenoid valves had something to do with the oil pump features. I remember reading a post explaining how the whole oil pump system works.

Going to see if I can get away with just replacing the oring seals. It's just that last time I looked at the solenoids, they seemed to be seeping oil from the solenoid valve body endcap. Keeping my fingers crossed. Few bucks spent is alot better than several hundred.

Thanks
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post #5 of 72 Old 7th January 2010, 02:55 PM
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Quote:
Originally Posted by BMWBIZ View Post
Thanks Bimmernut1, I suspected those solenoid valves had something to do with the oil pump features. I remember reading a post explaining how the whole oil pump system works.

Going to see if I can get away with just replacing the oring seals. It's just that last time I looked at the solenoids, they seemed to be seeping oil from the solenoid valve body endcap. Keeping my fingers crossed. Few bucks spent is alot better than several hundred.

Thanks
BMWBiz

Did you replace the seals?
I have the same problem,think im going to replace the seals myself, does any one knows if its difficult to change?
Best regards!
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post #6 of 72 Old 7th January 2010, 03:11 PM
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Drain the oil.Remove the connector from the oil solenoide.Remove both bolts(10mm socket,tightening torque 10NM).Turn and pull them out with adjustable pliers(sometimes they are hard to get out).When you pull them out,have paper next to you.There comes still alot of oil.





This is how they look like(top of the picture):


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post #7 of 72 Old 7th January 2010, 03:15 PM
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Vantaamipedia !!

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post #8 of 72 Old 7th January 2010, 03:18 PM
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Vantaamipedia !!
No idea what you are talking about!
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post #9 of 72 Old 7th January 2010, 03:20 PM
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No idea what you are talking about!
Yes Sorry !

I meant Raikkipedia !

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post #10 of 72 Old 7th January 2010, 03:22 PM
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