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Old 04-01-2002, 09:12 PM
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Join Date: Feb 2002
Location: SF Bay Area, CA
Posts: 180
Removing power steering filter, 380SL

Hey, I've got a new Benz in the family, about which I'll post
shortly. But for now, our old faithful 380SL needs a power
steering service, and I'm stuck.

Sucked the old fluid out with a Mityvac, and I have a brand-new
power steering filter here from PartsShop, ready to go. But I
can't figure out how to remove the old filter!

The empty reservoir has a threaded stud sticking straight up;
the reservoir cap hole goes over the end of that stud, and is
held down by a wingnut that threads onto the stud end.

Partway down the stud is a round disc clip that retains a spring;
the spring goes to the bottom of the reservoir where it seems
to hold the old filter in place. Or at least there's a plate down
there with a circle of holes in it, just as the new filter has.

I've read the 107 service CD and it doesn't even talk about
power steering filter changes (sheesh). Looked up a bunch of
old Tech Help threads, which say "remove the spring in order
to get the filter out".

Roger. Uh, well, not quite roger. More like Larry, Curly and Moe.

I've tried to remove the spring retaining disc clip. No dice, it just
spins in place. Have tried to rotate the stud by grabbing its end
with a pair of vice-grips. No dice. I've been able to spin the
plate at the reservoir bottom with a pair of needlenoses, but
that isn't loosening anything up, arrrrgh.

Can anyone give me the Mr. Clueless careful walkthrough on
how to remove the spring and get the old filter out? Thanks!


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Old 04-02-2002, 06:14 AM
Deltacom's Avatar
Join Date: Dec 2001
Location: Edge of the Abyss
Posts: 335
Steering pump filter


1. Remove wing nut or knurled nut as well as closing cover.

2. On grey iron pump and on light alloy pump 2nd version, remove detent spring (58), compression spring (43) and upper steadying plate (42).

Note: On grey iron pump 1st version a washer is included between compression spring and closing cover, on second version this washer is attached to cover.

3. Remove filter ring (41) and lower steadying plate (40)

4. On light alloy pump 1st version, remove detent spring (58) from stud.

5. On light alloy pump 1st version, take steadying basket (60) out of pump housing.
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Removing power steering filter, 380SL-steering-pump.jpg  
Deltacom ~ Absit Iniuria Verbis ~
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