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Old 01-08-2003, 09:51 AM
John Hermann
Posts: n/a
power steering pump filter replacement

OK, I must be bored, I want to change the power steering pump filter (and fluid too I guess) on my 85 380 SE (W126). The CD rom is silent on this, but there must be a trick to it. Where do I drain and bleed the system?

The winters here in Canada sure are long.

Regards to all,


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Old 01-08-2003, 11:11 AM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,840
Sound like a good idea. I've exchanged ps fliud on a few cars. You'll need a helper. The steps are rather simple.

1. Disconnect the return line, drain ps reservoir.
2. Plug open connection at the reservoir.
3. Secure the return line to a container (at least one gallon). If needed, add a length of hose.
4. Fill reservoir.
5. Have helper turn car on, and immediately go through full range of steering motion (left and right) and shut off car, all the while you are trying to keep the reservoir filled.
6. Button everything back up. Top off fluid.

A lot of fluid is pumped out quickly. The return line must be secured to prevent a big mess. Keep at least a gallon of ps fluid on hand. The helper must know what they are doing.
95 E320 Cabriolet, 153K
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Old 01-08-2003, 11:52 AM
John Hermann
Posts: n/a
power steering pump and filter

Thanks for the advice. There is a slight groaning when I turn the wheel while the car is stationary, and I hope that this helps. No leaks yet though. As for the power steering fluid filter, I guess the method of removal and replacement becomes apparent when the fluid is gone.

Thanks again,

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Old 01-08-2003, 05:43 PM
Registered User
Join Date: Dec 2001
Posts: 572
Good info above, but if you want to find this on the CD, look in the Maint. Manual which should be on the CD.

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