Power steering purge - follow up

Post your E12 technical questions and comments here. Please, no off-topic posts.

Moderators: Mike W., Pierre

Post Reply
Posts: 32
Joined: Wed Jun 14, 2017 11:01 am
Location: Eugene oregon

Power steering purge - follow up

Post by Frederich »

On E9 forum found info on purging system : can drain system by removing set screw at bottom of pump - 9mm hex hex screw w/ 7 mm head - have to remove pump from mounting bracket to access hex screw and secure it by attaching upper mounts on pump to lower mounts on bracket temporarily to get enough leverage. However this eliminates having to disconnect lines that were not leaking and even having to drain fill reservoir.
Have a question though ? should I refill system w/ atf and drain to flush system or just run a bit of atf thru lines to mini purge. ATF is expensive. Also the drain plug is at lowest point in system so initial draining purges all old atf. Thanks.
User avatar
Mike W.
Posts: 2798
Joined: Wed Aug 30, 2006 12:12 am
Location: Sonoma County

Re: Power steering purge - follow up

Post by Mike W. »

It's not bad practice, but unless it seems dirty or contaminated I wouldn't bother.
Mike W.

1980 528i, 3.5 euro, 5 speed conversion
1981 528i, 3.6, Recaros and more. Project
1998 328is, quick and efficient, but not satisfying
2000 528iit, Vacation mobile/wife's grocery getter
Post Reply