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BMW 3-Series (E90 E92) Forum
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Power Steering Flush DIY E90
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05-18-2013, 09:44 PM | #67 |
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man you guys are crazy doing all that work for steering fluid...just suck out fluid from reservior with a fluid extractor and refill, then start the car and turn steering left-right...repeat (3 times) until you use the entire bottle of ch11s. Do this every 30k-40k miles and you're golden. I also replaced the reservor cap with a new one that has a o-ring. My 2006 e90 stock cap didnt have the o-ring and it had alot residual on the cap...highly recommend if your cap do not have o-ring.
I use this oil suction gun...works like a charm. One pull and all the fluid was out of the reservior http://www.harborfreight.com/oil-suction-gun-95468.html
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2014 M235I (Current) 2015 428xi Gran Coupe (STB) Last edited by ska///235i; 05-18-2013 at 09:52 PM.. |
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07-12-2013, 10:33 AM | #68 | |
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08-17-2015, 12:02 PM | #69 |
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I wanted to revive this thread for one, it has been very informative and helpful. Secondly my cap says use ATF only, so I planned on picking up Castrol ATF, but how can I be sure that ATF is whats currently in the system and not CHF? Just cautious of this since CHF and ATF CANNOT be mixed.
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08-17-2015, 03:27 PM | #70 | |
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My mechanic based it on "his experience", looking at the colour and smelling it. He basically also told me that "he is 100% certain" that all E90 came with CHF for power steering and that my car just "lost the green sticker". ***WARNING*** I am not telling you to following me... experience may differ! For me, I trusted him and he flushed it with CHF (full drain and fill). It has been 2 years and my car is fine. |
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08-17-2015, 07:04 PM | #71 | |
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Just talked to an old buddy that works at BMW of San Antonio and he looked it up and did confirm that my 2007 E90 335i does require CHF 11. Thanks! |
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08-18-2015, 06:25 PM | #72 | |
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I put AMSOIL ATF back in. We poured the new AMSOIL in while the car was still on and turned the wheel several times to make the pump suck the new ATF in. We did this until the pump stopped whining and the level of the fluid remained constant in the reservoir. We then used the brake vac to suck out the new ATF out, in the same manner described above, which was not a nice red color due to it mixing with the residual CHS11 remaining in the system. We then put more AMSOIL ATF back in the system in the same manner described above. Presto - bright red fluid. You should change out the power steering fluid every 50k or your probability of changing out a new power steering pump after 100k gets greater. Last time I checked that part is not cheap. |
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09-09-2015, 03:35 PM | #73 |
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Anybody agree with me that the RealOEM diagram in this link http://www.realoem.com/bmw/enUS/show...diagId=32_1569 and the photos on page 1 of this tutorial don't match?
It seems to me that the power steering lines going into the rack are installed the other way (banjo bolt on the bottom). I've looked at this a few times, starting to drive myself crazy so I wanted to check with you guys! -speedball |
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09-15-2015, 12:58 PM | #74 |
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Will a flush make steering a little easier? One thing I'm not crazy about with this car is the firmness of the steering wheel. E90 08 335xi
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12-05-2016, 11:36 PM | #75 |
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Hi guys! Not sure if anyone's still following this thread, but what do you think of the following, even less messier, method for a full flush? This one does not involve removing the banjo bolt or the plastic underpanel at all!
1. Remove the airbox 2. Suck out the fluid from the reservoir 3. Unscrew reservoir from its bracket/attachments 4. Remove the crimp clamps and detach the two hoses at the bottom of the reservoir 5. Dump any old PS fluid that comes out of the lower portion of the reservoir (under the filter) and out of the hoses into a catchpan that you place where the airbox was 6. Install a new reservoir (since you can't change the filter in the old one as it is integrated into the reservoir) and reattach & tighten only the high-pressure line to the cooler, but leave the return line unattached for now. 7. Fill fresh fluid in the new reservoir and turn engine on. (I suppose you could use a floor jack at this point to raise the car just enough to clear the tires off the ground so as not to stress the PS pump) 8. Turn the wheel lock-to-lock intermittently in between pouring fresh fluid in the reservoir as the PS pump circulates old fluid out of the system via the unattached return line, dumping it into the catchpan. 9. When you see that the fluid coming out of the return hose into your catchpan is the fresh light green variety unlike the dirty kind, you know you've flushed out the vast majority, if not all of, the PS fluid. 10. Turn the engine off and attach/clamp the return line to the reservoir. Tighten the reservoir to the bracket and body in its final position. 11. Top up the reservoir as needed, tighten cap, and turn on engine and steering wheel lock-to-lock to purge any remaining air. 12. Get rid of the catchpan and reinstall airbox. Voilą!! ) Any thoughts? |
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01-08-2017, 09:33 PM | #77 | |
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03-04-2017, 12:20 PM | #78 |
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Just thought it might be worth checking bmwfans.info - for a EU 318i at least, the CHF11.S label (pt no. 71*21*2*122*171) says its for 'vehicles with cold climate version'
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05-10-2017, 10:07 AM | #79 | |
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Power Steering Fluid
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05-23-2017, 11:32 AM | #80 |
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Hi guys, I just joined the forum, I'm located in RSA. I own 320i E90 and I'm experiencing the similar issue with my power steering cap, its written ATF only, not so sure if the green sticker fell off along the way...I asked the dealer and they asked for VIN number and said they can't pick up which fluid to use but either ATF or CHF.
I called my local dealer and they said they have one called LHM...does anyone recommend this product? |
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05-23-2017, 11:39 AM | #81 | |
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05-30-2017, 08:13 AM | #82 | ||
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Last edited by oli3; 05-30-2017 at 08:25 AM.. |
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06-12-2017, 07:00 PM | #83 |
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Very helpful thread guys. I read over it a few times before I decided to change out the power steering fluid in my 2010 LCI 335d. I used a cheap siphon I bought from a cash and carry and used PENTISON CHF 11S as that is what was engraved into my power steering fluid reservoir. Didn't take long at all to complete and wasn't very messy either. My fluid was already low and I was hearing some odd sort of crunching and rubbing noises as I was parking the car sometimes so I was already to keen to take on this DIY. Thread helped me a bunch with confidence to do so. Also car feels alot smoother turning the wheel and the steering almost feels lighter. Haven't driven it around too much yet but there's definitely been a big change.
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09-21-2017, 09:58 AM | #84 |
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Hi all
I read almost all of the post in the thread but I am still curious about one thing. As opposed to either complete flush method or partial flush through reservoir I'm wondering if the methods can be combined. Something along the lines of: 1. completely drain old fluid through "bleed screw" 2. pour new fluid in the reservoir and keep turning steering wheel just like you would to drain the system to allow the new fluid to reach the "bleed screw" 3. after the new fluid reaches the "bleed screw" just wind it back on and the system is basically prepped. This method would just require two people, one to check when the new fluid reaches the bleed crew and one to keep turning the steering wheel until it does. Thoughts? |
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12-18-2017, 08:50 PM | #86 | ||
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12-23-2017, 06:49 AM | #87 | |
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You guys WAAAAAAAYYYYYY over maintain these cars. I have no idea how BMWs ever got to the point where owners think they need so much maintenance. It must be an internet thing. It's not a Space Shuttle for God's sake; it's just a car built with all the same materials and processes that every other car in the industry is built from. There's no magic to them. If you really want to go crazy, remove the oil cooling hose and take it to a hydraulic line repair shop and have them cut the hose and install a fitting with a drain plug. You could then flush the steering system fluid at every oil change if you wanted. Hell, just have them make a new line with braided stainless steel to make it even look cool. Save the money and wrench-time for the time something needs actual repair because it actually broke. Ugh.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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12-23-2017, 09:37 AM | #88 |
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Totally disagree. I had a major juddering when I would turn the wheel left or right. Even ps fluid levels at normal 1) I had leaks from cap and under both hoses. Not sure but there was caked on ps fluid over these areas. I ordered new resavour kit with new clamps. I replaced it and flushed the old fluid out. And now I have no issues with juddering at all. So I fixed It was under 50 for everything from fcp euro.
I opened up one of the high pressure lines and moved the wheels back and fourth to flush out all the old fluid. |
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