E90Post
 


European Auto Source (EAS)
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Power Steering - is there a filter on the system?



Reply
 
Thread Tools Search this Thread
      05-22-2019, 10:48 PM   #1
Shane1
Enlisted Member
United_States
0
Rep
33
Posts

Drives: MB CLS63 & Chevy Tahoe
Join Date: Sep 2018
Location: Los Angeles

iTrader: (0)

Power Steering - is there a filter on the system?

I am getting no assistance from the new power steering pump and slightly used rack & pinion I just installed. The steering wheel is still very hard to turn.


With the previous power steering pump and rack, the pulley on the pump was smoking with the belt. Something was definitely bad with the pump, so thats why it was necessary to replace it.

With the old pump and rack, the pump fluid reservoir had a lot of steel paste from the previous bad pwr steering pump and rack - I'm pretty sure that the rack was bad as it was tough to move even after I removed it from the car.

What else could it be with the power steering system? Is there a filter on the system?? Could have the excessive steel / aluminum paste gummed up something else? Any other ideas?!?

Thanks !
Appreciate 0
      05-23-2019, 12:55 AM   #2
bluewater328
Major
United_States
204
Rep
1,062
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Power steering fluid filter is built into the reservoir and not removable — need to replace the whole PS reservoir.
Appreciate 0
      05-23-2019, 01:35 AM   #3
Tambohamilton
Private
United Kingdom
21
Rep
95
Posts

Drives: E91 330d
Join Date: Apr 2019
Location: Wiltshire, UK

iTrader: (0)

Definitely replace the reservoir ASAP, as bluewater said. The new pump won't appreciate being starved of fluid, or any metal filings it happens to pick up.
Appreciate 0
      05-23-2019, 11:09 AM   #4
rothwem
Captain
United_States
192
Rep
851
Posts

Drives: 2009 BMW 328i Wagon
Join Date: Apr 2009
Location: Arden, NC

iTrader: (0)

Garage List
2009 BMW 328i  [0.00]
Quote:
Originally Posted by bluewater328 View Post
Power steering fluid filter is built into the reservoir and not removable need to replace the whole PS reservoir.
Though its not as bad as ^^ makes it sound, its like a $40 part. I made a huge mess when I did it on my X3 though, I'm not sure how messy it is in the E90s.
Appreciate 0
      05-23-2019, 11:23 AM   #5
bluewater328
Major
United_States
204
Rep
1,062
Posts

Drives: 2011 bluewater 328i LCI sedan
Join Date: Aug 2010
Location: Hawaii

iTrader: (0)

Quote:
Originally Posted by rothwem View Post
Quote:
Originally Posted by bluewater328 View Post
Power steering fluid filter is built into the reservoir and not removable — need to replace the whole PS reservoir.
Though its not as bad as ^^ makes it sound, its like a $40 part. I made a huge mess when I did it on my X3 though, I'm not sure how messy it is in the E90s.
Eh, turkey baster as best you can, prep towel below/around, then hose clamps to prevent the rest from going anywhere. Remove old, reclamp new. Add fluid, lock to lock (x2), drive, turkey baste, repeat till you're out of the CHS 11s can.

Or do it the thorough way and purge the rest of the fluid via the banjo bolt or return line pump method.
Appreciate 0
      05-23-2019, 06:51 PM   #6
Tambohamilton
Private
United Kingdom
21
Rep
95
Posts

Drives: E91 330d
Join Date: Apr 2019
Location: Wiltshire, UK

iTrader: (0)

Bear in mind that some cars need CHF 11S, while others need ATF. Not sure what the general rule is, but my 330d takes ATF; only the PS running off that system.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off



All times are GMT -5. The time now is 06:23 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST