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  1. #1
    Join Date
    Nov 2009
    Location
    Shakopee
    Posts
    1,414
    Car
    98 M3/4/5, Isettas, Vixen

    Default BMW 3 series ZF transmission shift problem ('96-'99) fix!!!

    Hey guys,

    I just finished repairing the transmission on my '98 328iC. It suffered from the infamous 'fifth gear lean' condition. The M3 used the same transmission and I will be doing this repair to my '98 M3 very soon.

    The problem usually starts with the shift lever sticking to the right. Sometimes it doesn't want to pop back to center like it should. It can also stick towards reverse. Another related symptom is difficulty getting into gears 1-4 ('notchy').

    I had the transmission out to put in a new clutch anyway so I bought the tools ($$$) to replace the bushings and pins. The good news is that the bushings and pins can be replaced without opening the transmission

    So, $70 worth of parts replaced all 5 bushings and pins. I opted to replace all of them since I plan to keep the car for a while. The simple fix for just the lean can be done with just $25 worth of the bushings.

    Tools and advice available for anyone with this problem. the sucky part is that it requires removal of the transmission.

    Craig L.

  2. #2
    Join Date
    Jul 2006
    Location
    West Minnetonka
    Posts
    16,539
    Car
    VRIANT | MB W204

    Default

    Geez... you have to remove the transmission just to replace shift bushings? That really sucks.

  3. #3
    Join Date
    Nov 2009
    Location
    Shakopee
    Posts
    1,414
    Car
    98 M3/4/5, Isettas, Vixen

    Default

    The problem is that the 1-4 bushings are accessed from the top. The reverse and 5th gear are on the side but they need to be pressed in, there just isn't enough room in the tunnel to get to them.

  4. #4

    Default

    Quote Originally Posted by Die Frau View Post
    Geez... you have to remove the transmission just to replace shift bushings? That really sucks.

    These are not shift bushings per say they are for the shift detent. Shifter bushings can all be replaced without trans removal

  5. #5

    Default

    SI B23 04 04
    Manual Transmission January 2007
    Technical Service This Service Information bulletin supersedes S.I. B23 04 04 dated January 2005.
    [NEW] designates changes to this revision
    SUBJECT
    Manual Shift Lever Sticks in 5th and Reverse Gears MODEL
    E36 Z3 2.8, 3.0
    E36 M Coupe, M Roadster S52, S54
    E36 M3 S50, S52 E39 528i, 530i
    E46 328i, 330i up to 1/2003 production
    [NEW] E46 325xi, 330xi up to 1/2003 production
    E53 3.0i up to 1/2003 production SITUATION - The Manual Shift Lever is difficult to move into and out of the 5th gear and reverse. - The Manual Shift Lever does not automatically move from the 5th and reverse gears back to the center/neutral position. - No Manual shift lever guidance indicating looseness of shifter This concerns all models referenced above manufactured prior to 1/2003. CAUSE
    The 5th gear and reverse gear selector shaft pin is sticking due to a defective bushing mounted in the selector shaft bore of the transmission. CORRECTION
    Replace the 5th and reverse gear selector shaft pin bushing. PROCEDURE
    All models except E36 M3: In case of customer complaint, the 5th and reverse gear selector shaft pin bushing must be replaced separately as described in BMW Repair Instruction 23 11 565.
    E36 M3:
    In case of customer complaint, the 5th and reverse gear selector shaft pin bushing must be replaced separately as described in the Repair Instructions attached to this Service Information Bulletin.

    PARTS INFORMATION
    WARRANTY INFORMATION
    Covered under the terms of the BMW New Vehicle Limited Warranty. Defect Code 23 00 92 34 00

    Labor Operation: 00 54 939
    Labor Allowance: Refer to appropriate KSD CD for labor allowance Special tools required:
    - 00 1 450 - 23 0 170 - 23 4 021 - 23 4 022 - 23 4 023
    Place transmission (1) with special tool 23 0 170 on assembly stand 00 1 450.

    Note:
    1=Locking pin for reverse gear
    2=Locking pin for 5th gear
    Release retaining ring (1).
    Drive sealing cap (2) out of transmission housing with a suitable tool.
    Important!
    Bore must not be damaged. A burr or a dent can cause the sealing cap to leak. Installation:
    Replace sealing cap (2). Note: Illustration shows sealing cap for reverse gear
    Remove pressure spring and locking pin.
    Important!
    Pressure spring and locking pin for reverse and 5th gears must not be mixed up. 5th gear locking pin Reverse gear locking pin
    Curved slant Straight slant
    Weaker pressure spring Stronger pressure spring Installation:
    Reverse gear locking pin:
    Slant must point downwards in bell housing direction of travel!
    5th gear locking pin:
    Slant must point upwards in bell housing in direction of travel! Note: Illustration shows: 5th gear pressure spring!
    Force open bearing bushing (1) and withdraw using a suitable tool. Important!
    Force open bearing bushing (1) at specified indent (2) only. Bore surface must not be damaged!

    Drive in bearing bushing (1) with special tool (see table).
    Important!
    Make sure you use the correct special tool. Different tools have different dimensions! 5th gear 23 4 022(short)
    Reverse gear 23 4 023 (long) Drive in sealing cap (1) with special tool 23 4 021.

    Fit retaining ring using special tool 23 4 021.

    Disclaimer





  6. #6
    Join Date
    Nov 2009
    Location
    Shakopee
    Posts
    1,414
    Car
    98 M3/4/5, Isettas, Vixen

    Default

    You are correct. My terminology was a bit off, sorry

  7. #7

    Default

    No problem just don't want to give all the VW guys more ammo j/k!

  8. #8
    Join Date
    Jan 2009
    Location
    Rosemount
    Posts
    17,083
    Car
    2001 allroad 6MT

    Default

    That looks a hell of a lot easier than replacing the detent balls in a Getrag.

    Why would you replace the detent balls? You wouldn't. Unless you broke a shift fork and removed the selector rods to replace it. Lots of grease and a few small picks were my friend.
    "There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self." - Ernest Hemingway


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