None of us are professional car service technicians and this story is just my own experience, no responsibility implied, mess with your electrical system and your own BMW warranty at your own risk.
Props given to ReeYee and Skin Mechanic and Hugo for their seat bushing instructions, and most especially to Doug Whalen for making these sanity-saving bushings and shift knobs and other goodies!
Seat Rocking Shish Kebab

Clutch Stop
Remove the Hump
Check Under Seat Wires
Removing the door sills
Removing the Seats
Console Lid
New Cam Cover
Sport Seats
Custom Leather Console Lid

Shift Knob Removal
Thanks to JonT for company and pics and Shawn for all the work and the pics and the company BBQ and to Melissa for company and dinner and turning me on to her iBook and Brent for the prototype shot
(Whalen Shift Knob)

So your seat is rockin' and it's driving you crazy. This is not the rocking chair kind of rockin' there is another problem like that in our seats with another kind of fix. This is the feeling like your seat is sliding a little bit when you come to a stop, like a roller coaster loose on the rail. It may have been like that from the start in your car, it might have begun after some use, it might be a roadster or a coupŘ it might be an ///M or a Z3, doesn't matter year or model.
Well the good news is that there is a fix, the bad news is that it's a bit annoying getting to the part you need to fix.
Behold the elusive kebab:

Deceptively simple.
On top you see a kebab with original oem black bushings, on the bottom you see one with Doug Whalen's white kevlar bushings. That is what it is all about, replacing the oem black rubber bushings with hard white bushings that wont "give".
I didn't think this would work because the rocking in my seats was so bad you could see it move, it felt like an inch of play.
This is it.
I checked my copy of BMW's Parts and Service Information CDs, albeit not the most recent, they don't show this part.
The closest I could come was 52 10 000 Removing and Installing front seat (normal/electric) left or right(Z3 Roadster M Roadster Z3 CoupŘ M CoupŘ)
Sport Seat Diagram
Standard Seat Diagram
So, there is no proper name for these parts. You are stuck with the names I give them.
Here is the PARTS NEEDED list I can manage- please email me to update it or add proper names
Materials needed:
Vaccuum cleaner (when you see what's under your seat, you will want one, and maybe some nice carpet cleaning stuff too)
Socket Wrench -13 and 16mm socket for the seat rails. Then a couple of different sized torx bits to disassemble the rails. Don't recall the exact size there.
100 grit sandpaper
sanding block- so you can sand more evenly on the bushings.
What size lug wrench
Block of wood to keepseat up
12V power supply to move seat rails when it is out of the car
Knee protection
Soldering iron- you may find torn wires
Nut and bolt tray
Blue Tape to mark where kebab is on rails
Work gloves- plastic and knit- for pulling door sills
grease? for shishs?
mirror tool to see under the seats
4 whalen bushings per seat
BFH (Rubber Hammer)
Midget 3/8" Drive Ratchet
First you have to remove the seat from the car. This pretty well follows the BMW directions for Seat Removal
We're at Shawn Fogg's magic garage, so you are seeing pics of the same process for Shawn's gorgeous Bright Red 96 1.9 with standard seats with seat heaters, and my wonderful Boston Green 97 2.8 with brand-new sport seats.
~*~Important to note that we only worked on the driver's seat. PLEASE check the BMW service information for special procedures relating to working on the passenger seat AIRBAG~*~
Also note that extensive use of the 12v power supply is used, I don't know how to move the rails for this procedure without it. Shawn suggests you make sure you remove the seats when the seats are fully in the most rear position.
Shawn begins by removing the bolts in the front of the rails and on the rear of the rails.(4 bolts, 2 in front and 2 in rear)
(clipped for Doug)

Here is shown the rods from Shawn's 1.9 standard seats. One is obviously larger than the other. Not so with the sport seat rods, which look alike.
Sorry, no photo of the sport seat rods..
Seat Rocking Shish Kebab
Shish Kebab- from the Encyclopedia Brittanica:
a dish of small pieces of lamb threaded on a skewer and cooked over an open fire. The name of the dish is derived from the Turkish for spit or skewer, "shish" and "kebab", mutton or lamb.
Now you see where the shish kebab reference comes in.

The rod runs like a skewer through the the kebab-holder piece that screws onto the pontoon from inside, then through the bushing, then through a metal piece that actually stays still to move the seat then through the other bushing and back out through the holding piece that screws to the pontoon. It's like a shish kebab skewer running through the onion, pepper, lamb chunk, pepper slice and onion again.
Your misson is to change the pepper.
Note that only the left kebab is marked. ("L")
The Kebab disassembled
The metal chunk (lamb) sits in a 3-sided black rubber bushing (pepper) inside the metal piece that is screwed to the pontoon (onion)
The Blue Tape marks where the kebab should be replaced on the skewer
The white Doug Whalen bushings are intentionally made too thick because the thickness needed for a tight fit varies.
You have to sand down the bushings, made of kevlar, to fit tight in the metal piece with the kebab.
The fit is right when it takes a big rubber hammer to get it in, but it goes.
After and Before Kebabs
since October 8, 2002
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