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  #16  
Old 12-17-2007, 02:10 PM
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I'd suck the fluid out with a turkey baster and refill the reservoir a few times. I don't know what could be doing that, it must be air though what else could get inside?
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  #17  
Old 12-17-2007, 02:10 PM
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It is a bit orange, eh? Maybe we should have a sample collected for analysis. I know of some good labs.
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  #18  
Old 12-17-2007, 02:14 PM
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I wonder what would happen if you did one of those machine flushes, like the BG flushes? Don't they flush the system under pressure that you might not get otherwise?
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  #19  
Old 12-17-2007, 02:16 PM
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Okay I just drove the car about 0.5 miles to get some oil for the 6.9 and checked the PSF level cold. It's clear! (well...yellowy but the way it should be) I drive the car back and open it up and again. Orange milkshake. The hoses are tight.

The thing that baffles me is why did the plastic container pumped out last night remain milky when the reservoir in the car itself return to clear?
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  #20  
Old 12-17-2007, 02:18 PM
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I would just pull off the return hose (the one with the phillips screw hose clamp) and dump that gunk into a bucket, and flush out the orange gook with the pulley turning by hand. it takes a bit longer, but you get it all out, and you don't get any air in.
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  #21  
Old 12-17-2007, 02:19 PM
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Quote:
Originally Posted by diametricalbenz View Post
Okay I just drove the car about 0.5 miles to get some oil for the 6.9 and checked the PSF level cold. It's clear! (well...yellowy but the way it should be) I drive the car back and open it up and again. Orange milkshake. The hoses are tight.

The thing that baffles me is why did the plastic container pumped out last night remain milky when the reservoir in the car itself return to clear?
temp of engine compartment?
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #22  
Old 12-17-2007, 02:22 PM
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Quote:
Originally Posted by vstech View Post
temp of engine compartment?
I would say 55F as it sat overnight. The inside temp in the plastic container in my place is roughly 65F.
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  #23  
Old 12-17-2007, 04:00 PM
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Shaken, not stirred please
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  #24  
Old 12-17-2007, 04:53 PM
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Answer:

Best guess:

#1. Clear P/S fluid contaminated with the wrong type ATF = must be flushed.

#2. Air leak in the fluid return circuit = possible bad pump or gearbox seals sucking air...

#3. Bad pump = internal cavitation causing foam...





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  #25  
Old 12-18-2007, 03:50 AM
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New observation.

Drove the car 390miles today....had to. I opened the lid up and saw water condensation! There was absolutely no indication of it before but there were water droplets (or something beading and clear) on the lid. That lid shows a decent seal and was dry all the way around....or perhaps it isn't. I encountered some light rain on the way up but even if it did leak how did I get water in the PSP reservoir on a dry day prior to today's driving? And if so why the heck did it clear up this morning?
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  #26  
Old 12-18-2007, 05:03 AM
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AIR or Possibly water.

Flush it by hooking up hoses, get the frond end off the ground, then with the engine off, go lock to lock continually filling ( a friend would help here), and try again.
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  #27  
Old 12-18-2007, 09:20 AM
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I have seen this before in many hydraulic systems in heavy machinery that I used to work on. When you get water in the fluid and pressurize it, it will make an emmulsion of the water and oil even though they dont mix. What you are seeing is really fine water molecules dispursed between oil molecules causing the milky appearance. 100% positive that you have water in your fluid from some source or another. Best off changing the seal on the lid and making sure the little nut on the top seals decent as well. You will need to flush the system several times with fresh fluid and drain to rid it of all the water. It would be a good time to change the filter too.
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  #28  
Old 12-18-2007, 11:20 AM
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It's got to be water.
But no matter what it is, you'll need to keep draining, purging and replenishing, until it is all out.
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  #29  
Old 12-18-2007, 04:15 PM
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Quote:
Originally Posted by TTCummins View Post
I have seen this before in many hydraulic systems in heavy machinery that I used to work on. When you get water in the fluid and pressurize it, it will make an emmulsion of the water and oil even though they dont mix. What you are seeing is really fine water molecules dispursed between oil molecules causing the milky appearance. 100% positive that you have water in your fluid from some source or another. Best off changing the seal on the lid and making sure the little nut on the top seals decent as well. You will need to flush the system several times with fresh fluid and drain to rid it of all the water. It would be a good time to change the filter too.
I saw "emulsion" when I first saw it but didn't make sense since it was dry. Either way there is water in it.

I can't seem to find a new seal on fastlane for the PSP reservoir lid....
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Last edited by diametricalbenz; 12-18-2007 at 07:17 PM.
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  #30  
Old 12-21-2007, 08:25 PM
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Quote:
Originally Posted by diametricalbenz View Post
I saw "emulsion" when I first saw it but didn't make sense since it was dry. Either way there is water in it.

I can't seem to find a new seal on fastlane for the PSP reservoir lid....
Aha! thanks to TTCummins, water/oil emulsion it is then, not something accidentally added (unless someone added something else along with PS fuid!)
So, I wouldn't worry too much right now about that seal, it will take a pressure wash or a flood to get enough water up into that reservoir
here's Fastlane's response to a search for "P/S Reservoir Gasket" for a 300TD, I believe the same for your model (Fastane disn't recogninze PSP) but better to check using your exact model before ordering one:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=26H1EAL2C29817LLUY&year=1984&make=MB&model=300-TDT-001&category=M&part=P%2FS+Reservoir+Gasket
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