Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 06-01-2002, 10:20 AM
Posts: n/a
Question 79 300SD-power steering fluid?????

My car is using power steering fluid, not on drive way. Any info on this. I just bought the power steering fluid filter ( don't know how to install it yet). Wondering where this fluid is going?
Thanks in advance.

Reply With Quote
Old 06-01-2002, 03:56 PM
Posts: n/a
If the car were mine, I would take a pair of ramps, put them in the trunk, get on my ratty shop clothes and drive to the self service car wash. Run the front wheels on the ramps and start scrubbing the pump, hoses and box from below AND above thoroughly. Then, take it home raise it, get underneath and look for the leak.

I'm not familiar with your particular chassis but most filters are inside the reservoir. Empty the reservoir with a turkey baster or some such thing and you will probably find the filter.

Also, I strongly suggest that you go to the parts store and get some standard power steering fluid. Do not use Dexron or Mercon ATF. Since your car was built and the owners manual written, Mercon, etc have evolved for A/T use and are not healthy for the seals in your power steering system. If you insist on using ATF anyway, locate some type A. If you find and fix the leak then use Mercon in the system, you will eventually have another leak.

Good luck,
Reply With Quote
Old 06-01-2002, 04:26 PM
Aaron's Avatar
Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,937
Dexron III/Mercon is absolutely ok to use in your power steering system. MB service bulletins state that it is ok in most all of their cars bar the W210 and some W140s and the newest cars. Those cars require special fluid which is only available from MB. As for the filter, you will find it at the bottom of the resirvoir once you empty it. Just take the spring off the shaft and take the little c-clip off and you will be able to pull the filter up and remove it. Drop the new one in and replace spring and retaining clip. Fill to cast mark on inside of resirvoir and start the car and bleed any bit of air which may have gotten in. To bleed it, just turn the wheel from lock to lock a few times. On the old old steering boxes, you have to crack open an 11mm bleeder screw and do it that way. Newer systems like yours are self-bleeding.
Reply With Quote
Old 06-02-2002, 08:38 PM
Eberhard Weilke's Avatar
Registered User
Join Date: Mar 2002
Location: Stuttgart, Germany
Posts: 637
Removing the filter... Aaron said, remove the clip and the spring. On the bottom you will find something looking like a telefon dial. Remove that plate by means of grabbing it with a screw driver.

If it is the original, factory installed filter you fill find a brown filter ring. Throw it away. Under the ring a a little something holding the ring in place.

Since the new filter is a paper filter unit, don't forget to remove this something also.

Install the paper filter by pushing it all the way down.

Kind regards
Reply With Quote
Old 06-02-2002, 09:16 PM
Robert W. Roe's Avatar
Registered User
Join Date: May 1999
Location: Lehigh Valley PA
Posts: 1,330
FWIW, my local mechanic told me to top my 1977 300D with PS fluid when the filter collapsed and I began to leak PS fluid. His words, "just make sure it's Power Steering Fluid ...
Bob Roe
Lehigh Valley PA USA
1973 Olds 88, 1972 MB 280SE, 1978 Datsun 280Z, 1971 Ford T-Bird, 1972 Olds 88, 1983 Nissan Sentra, 1985 Sentra, 1973 230.6, 1990 Acura Integra, 1991 Volvo 940GLE wagon, 1983 300SD, 1984 300SD, 1995 Subaru Legacy L wagon, 2002 Mountaineer, 1991 300TE wagon, 2008 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon, all gone... currently
2007 Honda Odyssey Touring, 2014 E350 4matic
Reply With Quote
Old 06-03-2002, 02:26 AM
Eberhard Weilke's Avatar
Registered User
Join Date: Mar 2002
Location: Stuttgart, Germany
Posts: 637
The manual...

...and all the rest of the available service bulletins, workshop manuals and alike state the use of ATF for the power steering.

It is ATF and nothing else then ATF.

Kind regards

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 01:19 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page