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  #1  
Old 06-22-2019, 02:48 PM
VictoriaCoffeeRoasters
 
Join Date: Apr 2019
Location: Victoria, TX
Posts: 17
Original Power Steering Pump Filter - What use is it?

Hello all. I recently changed the power steering fluid and filter on our new to us 1980 300SD with 139K miles. The reservoir was full but the fluid was brown. I removed the old fluid down to the filter, then added some clean ATF. After running it a couple of days, I removed more fluid and repeated the process. At this time, the fluid had a fresher look. Again I removed the old fluid but this time removed the filter as well. To my surprise, it looked like an original.

So my question now it, what should I do with it?

Thanks.
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Original Filter - What use is it?-20190622_132012.jpg   Original Filter - What use is it?-20190622_132016.jpg   Original Filter - What use is it?-20190622_132023.jpg   Original Filter - What use is it?-20190622_132029.jpg  
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1979 300D
1980 300SD

Last edited by victoriacoffeeroasters; 06-22-2019 at 03:32 PM. Reason: Clarification
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  #2  
Old 06-22-2019, 04:07 PM
Registered User
 
Join Date: Jul 2015
Location: Los Angeles, CA
Posts: 127
throw it away

Throw it away and install a new one. Good work flushing a few times.

Quote:
Originally Posted by victoriacoffeeroasters View Post
Hello all. I recently changed the power steering fluid and filter on our new to us 1980 300SD with 139K miles. The reservoir was full but the fluid was brown. I removed the old fluid down to the filter, then added some clean ATF. After running it a couple of days, I removed more fluid and repeated the process. At this time, the fluid had a fresher look. Again I removed the old fluid but this time removed the filter as well. To my surprise, it looked like an original.

So my question now it, what should I do with it?

Thanks.
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1983 300D 904/palomino
2.88 rear end, 4 speed swap, W115 long runner intake manifold, W116 non-EGR exhaust manifold, rebuilt KKK K26, 3 piece Euro bumpers, Lo-spec Euro headlights, AL129X, 6.5" wide steel wheels + hubcaps, 15% tint, Alpine head unit + JL 3.5s & 5.25s, custom A/C, Coco Mats

1987 300TD 702/java leather
Pre-facelift Euro headlights, OM606 fan + fan clutch, switched aux fan control
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  #3  
Old 06-22-2019, 05:22 PM
okyoureabeast's Avatar
Rogue T Tolerant
 
Join Date: Jul 2009
Location: North America
Posts: 1,581
I recall that the originals were "washable", but no sense keeping it since better modern filters are cheaper and less messy.

There's a small drain port on the bottom side of the box that will get more goo out of the box slightly faster than multiple flushes.
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Quote:
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Going back to the original post: "Can you get the vac to blow instead?" No. Vacuums are low pressure so they by nature "suck" and nature abhors them.
1984 380SL
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  #4  
Old 06-23-2019, 10:22 AM
VictoriaCoffeeRoasters
 
Join Date: Apr 2019
Location: Victoria, TX
Posts: 17
Quote:
Originally Posted by okyoureabeast View Post
I recall that the originals were "washable", but no sense keeping it since better modern filters are cheaper and less messy.

There's a small drain port on the bottom side of the box that will get more goo out of the box slightly faster than multiple flushes.
Thanks for the tip!

How does one "wash" the element - water?

I think I'll put it away in case anyone needs it for some restoration project.
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1979 300D
1980 300SD
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  #5  
Old 06-23-2019, 10:32 AM
vwnate1's Avatar
Diesel Dandy
 
Join Date: Nov 2005
Location: Sunny So. Cal. !
Posts: 4,391
Post P.S. Service

Just drain and re fill the P.S. pump at every hot oil & filter change and after a few the ATF in the P.S. will remain translucent red, keep changing it until the burned smell is gone .
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-Nate
1982 240D creampuff 370,000 miles
1978 300CD back from the dead&1980 300CD ~ SOLD
1984 300CD KEEPER ! 440,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Moto R60/6 Barn Find, 8,000miles
1959 VW #113 Deuxe Beetle, 36hp engine, stock
Junk, Rust, Arthritis, Crushed Spine,Broken Neck&Back
Memories, Peace Of Mind
facts & reality don't change because you can't handle them
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  #6  
Old 06-27-2019, 12:15 PM
Registered User
 
Join Date: Nov 2010
Location: TX
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Quote:
Originally Posted by victoriacoffeeroasters View Post
Thanks for the tip!

How does one "wash" the element - water?

I think I'll put it away in case anyone needs it for some restoration project.
These are washed with gasoline, then rinsed with ATF, wrung out gently and installed back.

Its a lot easier to install a new paper filter in there.
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1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
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  #7  
Old 06-27-2019, 01:57 PM
A guy who likes to Benz
 
Join Date: May 2010
Location: DC Metro/Maryland
Posts: 5,722
Quote:
Originally Posted by victoriacoffeeroasters View Post
Thanks for the tip!

How does one "wash" the element - water?

I think I'll put it away in case anyone needs it for some restoration project.
Keep in mind that the 12mm drain plug on the box will only work if the box is off-center. In the center position no fluid will come out.
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I recondition w123/w126/w124/w140/r107/r129/ steering boxes!


1984 300D "Elsa" odo reset 6/2011 111k
1983 300TD "Mitzi" ~268k OM603 powered
1995 E300 "Adelheid" 262k [Sold]
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  #8  
Old 06-27-2019, 02:15 PM
vwnate1's Avatar
Diesel Dandy
 
Join Date: Nov 2005
Location: Sunny So. Cal. !
Posts: 4,391
Post Original P.S. Filters

Toss it ~ #1 : it cannot be 'wrung out' because it's ridged .

#2 : I had one and cleaned it then tried mightily to give it away, even my friends at the M-B Classic Center said they'd never use one because the paper ones filter better .
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-Nate
1982 240D creampuff 370,000 miles
1978 300CD back from the dead&1980 300CD ~ SOLD
1984 300CD KEEPER ! 440,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Moto R60/6 Barn Find, 8,000miles
1959 VW #113 Deuxe Beetle, 36hp engine, stock
Junk, Rust, Arthritis, Crushed Spine,Broken Neck&Back
Memories, Peace Of Mind
facts & reality don't change because you can't handle them
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  #9  
Old 06-27-2019, 02:54 PM
okyoureabeast's Avatar
Rogue T Tolerant
 
Join Date: Jul 2009
Location: North America
Posts: 1,581
Quote:
Originally Posted by victoriacoffeeroasters View Post
Thanks for the tip!

How does one "wash" the element - water?

I think I'll put it away in case anyone needs it for some restoration project.
Easy, just put it in the trash

The reason being because those dainty Pebble Beach judges won't stick their hands inside the power steering reservoir to dock you paints for not having the original paper filter.
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Quote:
Originally Posted by Yak View Post
Going back to the original post: "Can you get the vac to blow instead?" No. Vacuums are low pressure so they by nature "suck" and nature abhors them.
1984 380SL
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