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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 10-07-2012, 08:41 AM
champaign777's Avatar
champaign777 champaign777 is offline
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Mein Auto: 2003 530 Sport Twins
BMW E39 I6 528i 525i 530i steering rack rebuild

Fellas

We all know that I6 has the best steering rack with pinion
Based on my experience and research on US/ EURO forums to be able to take the best of them
they need to be rebuild every ~100k
I don't want to argue if it is necessary or not , if you think your steering rack
is perfect after 100k+ miles this thread is not for you

So lets start

1. All I6 has the same steering rack
The ZF # is 7852 955 304 and it is the same for 528i, 525i and 530i
( remember this number 7852 )
I personally checked 3 steering racks for M54 and they all have the same ZF number
The BMW # for steering rack w/o Servotronic ( US version ) is 32136751745

2. For this steering rack 7852 this is what i found so far :

The parts :

http://forum.bmwland.ru/index.php?ac...=post&id=26968

1 bearing ZF 0635 332 003 pic # 2
1 bearing ZF 7830 327 111 pic #53
2 plastic bush ZF 7852 035 131 pic # 24
1 plastic bush ZF 7852 040 192 pic # 30,1
1 plastic bush ZF 0770197 047 pic # 57
1 bolt ZF 7830 030 120 pic # 34
1 seal ZF 7830 040 507 pic # 34.3

1 seal kit ZF 7852 633 048
This what is included into this kit :
==================================
2 seals ZF 7852 033 155 pic # 10.9
1 seal ZF 0634 303 218 pic # 15
1 seal ZF 7852 033 166 pic # 16
1 seal ZF 0634 304 563 pic # 17
1 seal ZF 0634 306 218 pic # 31
1 seal ZF 0634 306 233 pic # 38
1 plastic bush ZF 0770 198 175 pic # 51
1 plastic bush ZF 0770 198 168 pic # 58
4 seals ZF 7409 033 112 pic # 87
4 seals ZF 0770 031 331 pic # 88
1 seal ZF 0634 303 340 pic # 94
8 seals ZF 7830 033 163 pic # 103
===================================

The repair instruction for 7852

ZF Rack and Pinion Power Steering Gear

3. I dropped mail to ZF US asking if i can get these parts
( anyone tried ? )

4. One more link is in US kit # RB8623.1 , Rack Kits / 528 / 97-00 / Without Servotronic
( anyone tried ? Looks like the one we need )

http://www.pskits.com/catalog/-c-21_25.html

Anywhere noone of these kits include bearings

5. One more source i found in UK

http://steeringseals.com/5series-2.html

Stay tuned
I
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E39 4 ever

BMW E38/E39 Rear Axle/Differential Bush Tool

Last edited by champaign777; 10-07-2012 at 10:07 AM.
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  #2  
Old 10-07-2012, 08:50 AM
cornellone0 cornellone0 is offline
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Please let me know how much work is involved my rack is leaking now
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  #3  
Old 10-07-2012, 09:09 AM
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champaign777 champaign777 is offline
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Remove steering rack is ~1-2H
You can leave your tie rods connected to wheel carrier and disconnect only inner part from steering rack
so you basically don't need to do alignment after repair
Repair steering rack is ~3-4H if you have all parts
Where to get these parts in US is a $1000 question
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E39 4 ever

BMW E38/E39 Rear Axle/Differential Bush Tool

Last edited by champaign777; 10-08-2012 at 01:27 PM.
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  #4  
Old 10-07-2012, 09:42 AM
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champaign777 champaign777 is offline
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to have idea about this job

http://bmwpost.ru/forum/showpost.php...83&postcount=4
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E39 4 ever

BMW E38/E39 Rear Axle/Differential Bush Tool

Last edited by champaign777; 10-07-2012 at 09:54 AM.
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  #5  
Old 10-08-2012, 08:50 AM
cn90 cn90 is offline
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Mein Auto: 1998 528i 5-sp 140K+
As you mentioned above, people have used the kit from:
http://www.pskits.com/catalog/-c-21_25.html

with good success.
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  #6  
Old 10-08-2012, 01:22 PM
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champaign777 champaign777 is offline
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CNN
1. Do you know who did SR repair for E39 ?

2. If you see above some parts are not in this kit
All i can find is E36 or E46 folks but even they said they did it w/o bearings which is not a whole overhaul but partial
More than this E36 and E39 kit for steering rack are the same, BMW part #32 13 1 094 629
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E39 4 ever

BMW E38/E39 Rear Axle/Differential Bush Tool

Last edited by champaign777; 10-08-2012 at 04:39 PM.
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  #7  
Old 12-12-2012, 12:27 AM
cn90 cn90 is offline
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champaign777 and others,

I just saw something interesting in the Volvo forum and I thought I would share.

Most steering rack leaks occur at the outer O-ring/seal, thus fluid coming out of the protective boot ---> on the garage floor. It virtually never leaks at the pinion end.

Of course the proper way is to remove the Steering Rack and rebuild it from scratch or pay big bucks for a quality Steering Rack. But removing the steering rack from any car is a pain in the rear, not to mention the number of labor hours involved!

This Volvo person replaced ONLY the Outer O-rings/Seals using the rebuild kit ($47) without removing the Steering Rack from the car.

http://volvospeed.com/vs_forum/topic...rack-leak-fix/


So, we need someone in E39 to act as "guinea pig" and do this for forum i.e., replacing the Outer O-rings/Seals without removing the steering rack from the car.

Comparing with the Volvo, the BMW E39 Steering Rack is in a better location because (the Volvo 850/S70 SR is behind the front axle while the BMW E39 SR is in front of the front axle). So this job should be easier on the BMW E39.

Rebuild kits can be bought for $50.

The PS Rebuild Kit does not have the protective boot, so you have to order separately for the boot and clamps. Here are the Volvo TRW Rack photos for reference:



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Last edited by cn90; 12-12-2012 at 12:28 AM.
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  #8  
Old 06-11-2013, 03:35 AM
ramp ramp is offline
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Posts: 41
Mein Auto: 635csi, MGA, e39
Has anyone followed up on this thread??

I'd be curious. Mine has a slight leak.
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  #9  
Old 08-15-2013, 09:55 PM
SiGmA_X SiGmA_X is offline
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Location: OR
 
Join Date: Jul 2005
Posts: 42
Mein Auto: 99 528iT, 93 325iS
I may give this a shot in the next few weeks. I have some freeplay in a rack that has ~8,400 miles on it from a 'reputable' rebuilder, and I have a spare (good but old) rack I could rebuild in the mean time. I may have to call PSKits - Can anyone confirm if the include bearings? That is what my rack needs, not seals. Though obviously all will be done...
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  #10  
Old 12-15-2013, 04:27 PM
pfi pfi is offline
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Join Date: Dec 2013
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Mein Auto: 93' 318is coupe
I have an E36 ('93 318is coupe) with ZF-rack # : 7852 955 304
so, it's in the same "family" but propably some differences.

I'm currently trying to "service" my rack....., (hopfully doin' a DIY when done)
( got my "service-pack" (part # : 32 13 1 094 629) from : schmiedmann )
but, ......
in the process, I've run into a problem..... :0

the pdf (previously referred to by champaign777) : ZF Rack and Pinion Power Steering Gear says, on page 10, "chapter" 6.2 Versions without cylindrical tube (22) to : "Unsnap the snap ring (18)." (see att # 1)
what to unsnap ? takealook at att # 2
and,
I'm NOT able to "unsnap" it..... :-/
so,
wondering.....,
does the E39 have the same "version" / solution ?
and,
or,
does anyone have a(ny) good idea(s) of how to "unsnap" the &%#/&% "snap ring (18)"

regards
-pfi
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Last edited by pfi; 12-15-2013 at 04:35 PM. Reason: corection
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