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Old 01-13-2016, 09:03 AM   #1
CharlieBravo
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Anyone recommend replacing power steering reservoir?

I'm planning on flushing my steering fluid since it looks mud brown and God know when it was changed last. Is it common to change the reservoir/filter? I have 111k on the clock. Doesn't seem too hard but if it isn't necessary i'd rather keep the 50 bucks in my pocket. I don't see any leaks.

Last edited by CharlieBravo; 01-13-2016 at 09:31 AM.
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Old 01-13-2016, 09:07 AM   #2
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Quote:
Originally Posted by CharlieBravo View Post
I'm planning on flushing my steering fluid since it looks mud brown and God know when it was changed last. Is it common to change the reservoir/filter? I have 111k on the clock. Doesn't seem too hard but if it isn't necessary if rather keep the 50 bucks in my pocket. I don't see any leaks.
Reservoir has an internal filter and the O-ring on the cap will be flat and hard as a rock.

Most replace the reservoir and the 2 hoses that connect to the reservoir as the become soft and sweat fluid.
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Old 01-13-2016, 09:17 AM   #3
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Yes, it's super cheap. Only $20 for the OEM ZF. Gonna do mine next time I flush the power steering, it's been 3 years but the fluid is still bright red.
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Old 01-13-2016, 04:39 PM   #4
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As mentioned, the reservoir has an internal filter that needs to be replaced.



It can't be removed from the reservoir, but some do disconnect it and clean with fuel:



More info here: http://www.bimmerfest.com/forums/sho...d.php?t=559914.

With as inexpensive as it is, however, I'd go ahead and replace and not worry about trying to clean the filter. A new reservoir will also come with a new cap and o-ring, which is likely in need of replacing, as well.

The ZF (OEM) reservoir is half the cost of whichever one you’re looking at (https://www.fcpeuro.com/products/bmw...ir-32411097164), and the two hoses coming off the reservoir will run you around $15-$25 apiece.

If you're interested in tackling more "while you're in there," here's a good list of additional part numbers for a full overhaul: http://forum.e46fanatics.com/showthread.php?t=996069.
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Old 01-21-2016, 12:57 AM   #5
CharlieBravo
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Alright, new reservoir ordered. Thanks!
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Old 01-21-2016, 01:28 AM   #6
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I won't even bother replacing reservoir without replacing the hoses.

'Matter of fact it the concern should've been replacing the hoses then the reservoir as an added addition.

They sell a tool, reasonably cheap, square shaped, to release the hoses. Makes the job much easier

The clips were missing on mine. I had to use a grinder and cut the metal end connector to remove the hoses.
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Old 01-21-2016, 10:12 AM   #7
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When replacing any power steering component, it's a good idea to flush the fluid. Here is ZF's guide on how to do that.
http://zf-steering.us/manual_files/F...g%20System.pdf
They assume the reservoir is already empty before you start.

FWIW: I use a similar procedure to replace the ATF utilizing the cooler lines near the radiator.
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Old 01-23-2016, 12:18 AM   #8
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They sell a tool, reasonably cheap, square shaped, to release the hoses. Makes the job much easier
^ Agreed. OP, if you're changing the power steering reservoir hoses you'll need this: https://www.fcpeuro.com/products/bmw...-tool-cta-3466.

Quote:
Originally Posted by jupiterntune View Post
The clips were missing on mine. I had to use a grinder and cut the metal end connector to remove the hoses.
Just for future reference, or OP if this is the case with yours, take a look at this thread for another solution (see post #8 for photos): http://forum.e46fanatics.com/showthread.php?t=1085943.
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Old 01-23-2016, 01:27 AM   #9
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Originally Posted by BaliDawg View Post



FWIW: I use a similar procedure to replace the ATF utilizing the cooler lines near the radiator.
I know this can be done but I've never seen a DIY that actually shows how to do it! A simple drain and fill is already pretty easy I guess.
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