How to carry out replacement: Control Arm 500 SL 5.0 (129.066) SL R129
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Change SL R129 320 3.2 (129.064) Control Arm yourself – manuals and video tutorials

How to change front lower arm on MERCEDES-BENZ SL (R129) – replacement guide

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Download your free tutorial and fix MERCEDES-BENZ SL (R129) 500 5.0 (129.068) problems yourself Download for free 2.25 MB Control Arm for SL R129 Shop now
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Important!
This replacement procedure can be used for:
MERCEDES-BENZ SL (R129) 500 (129.068), MERCEDES-BENZ SL (R129) 320 (129.064), MERCEDES-BENZ SL (R129) 280 (129.059), MERCEDES-BENZ SL (R129) 500 SL (129.066), MERCEDES-BENZ SL (R129) 500 (129.067), MERCEDES-BENZ SL (R129) 320 (129.063), MERCEDES-BENZ SL (R129) 300 SL-24 (129.061), MERCEDES-BENZ SL (R129) 300 SL (129.060), MERCEDES-BENZ SL (R129) 280 (129.058) … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Control Arm for SL (R129) and other MERCEDES-BENZ models
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Tools
Replacement: front lower arm – MERCEDES-BENZ SL (R129). List of the tools you'll need:
Wire brush
WD-40 spray
All-purpose cleaning spray
Ceramic grease
Torque wrench
Combination spanner #18
Combination spanner #22
Drive socket # 13
Drive socket # 19
Drive socket # 22
Wheel impact socket #17
Ratchet wrench
Tap wrench
Hammer
Pin punch
Crow bar
Rubber mallet
Strut spring compressor
Hydraulic transmission jack
Wheel chock
Buy tools
Replacement: front lower arm – MERCEDES-BENZ SL (R129). AUTODOC experts recommend:
  • The replacement procedure is identical for the left and right lower control arms.
  • All work should be done with the engine stopped.
Replacement: front lower arm – MERCEDES-BENZ SL (R129). Recommended sequence of steps:
  1. Step 1
    Secure the wheels with chocks.
    Step 2
    How to change Control Arm on SL R129 1989 - free PDF and video manuals
    Loosen the wheel bolts. Use wheel impact socket #17. Use a tap wrench.
  2. Step 3
    Raise the car.
    Replacement: front lower arm – MERCEDES-BENZ SL (R129). AUTODOC recommends:
    If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.
    Step 4
    How to replace MERCEDES-BENZ SL (R129) 500 SL 5.0 (129.066) 1990 Control Arm - step-by-step manuals and video guides
    Unscrew the wheel bolts.
    AUTODOC recommends:
    To avoid injury, hold up the wheel when unscrewing the bolts.
  3. Step 5
    SL R129 300 SL-24 3.0 (129.061) 1991 Control Arm replacement: free workshop manuals
    Remove the wheel.
  4. Step 6
    Changing Control Arm on MERCEDES-BENZ SL (R129) 320 3.2 (129.063) 1992 by yourself
    Install the coil spring compressor on the coil spring.
    Replacement: front lower arm – MERCEDES-BENZ SL (R129). Professionals recommend:
    Use adapters and jaws of the appropriate size.The sping coils should be securely fixed with the coil spring compressor.Use high quality coil spring compressors.
  5. Step 7
    How to remove MERCEDES-BENZ SL 300 SL 3.0 (129.060) 1993 Control Arm - online easy-to-follow instructions
    Compress the spring.
    AUTODOC recommends:
    Be careful. The compressed spring is powerful and can cause injury if it comes loose.
  6. Step 8
    How to replace Control Arm on MERCEDES-BENZ SL (R129) 1994: download PDF manuals and video instructions
    Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
  7. Step 9
    How hard is it to do yourself: Control Arm replacement on SL R129 280 2.8 (129.058) 1995 - download illustrated guide
    Make marks on the camber bolts.
  8. Step 10
    Need to know how to renew Control Arm on MERCEDES-BENZ SL 1996? This free workshop manual will help you to do it yourself
    Unscrew the rear fastener of the control arm. Use a combination spanner #22. Use a drive socket #22. Use a ratchet wrench.
  9. Step 11
    Changing of Control Arm on SL R129 1997 won't be an issue if you follow this illustrated step-by-step guide
    Unscrew the front fastener of the control arm. Use a combination spanner #22. Use a drive socket #22. Use a ratchet wrench.
  10. Step 12
    MERCEDES-BENZ SL 320 3.2 (129.064) Control Arm replacement: online guides and video tutorials
    Unscrew the fasteners connecting the anti-roll bar bracket to the control arm. Use a drive socket #13. Use a ratchet wrench.
  11. Step 13
    Replacing Control Arm on SL R129 1999 500 SL 5.0 (129.066) by yourself
    Detach the anti-roll bar from the control arm.
  12. Step 14
    SL (R129) 300 SL 3.0 (129.060) 2000 Control Arm DIY replacement workshop manual
    Unscrew the fastener connecting the ball joint to the steering knuckle. Use a combination spanner #18. Use a drive socket #19. Use a ratchet wrench.
  13. Step 15
    How to change Control Arm on MERCEDES-BENZ SL (R129) 2001 - tips and tricks
    Remove the fastening bolt.
  14. Step 16
    Step-by-step recommendations for DIY replacement SL R129 1989 300 SL 3.0 (129.060) Control Arm
    Disconnect the ball joint from the steering knuckle.
  15. Step 17
    DIY replacement of Control Arm on MERCEDES-BENZ SL (R129) 500 5.0 (129.067) 1990 is not an issue anymore with our step-by-step tutorial
    Remove the fastening bolts. Use a pin punch. Use a hammer.
  16. Step 18
    How to change Control Arm on SL R129 1989 - free PDF and video manuals
    Remove the coil spring together with the coil spring compressor.
    Replacement: front lower arm – MERCEDES-BENZ SL (R129). Tip from AUTODOC experts:
    While the spring is compressed, do not do any operations on it.
  17. Step 19
    How to replace MERCEDES-BENZ SL (R129) 500 SL 5.0 (129.066) 1990 Control Arm - step-by-step manuals and video guides
    Remove the control arm. Use a crowbar.
  18. Step 20
    SL R129 300 SL-24 3.0 (129.061) 1991 Control Arm replacement: free workshop manuals
    Clean the suspension arm mounting seats. Use a wire brush. Use all-purpose cleaning spray.
  19. Step 21
    Changing Control Arm on MERCEDES-BENZ SL (R129) 320 3.2 (129.063) 1992 by yourself
    Install the new control arm.
    AUTODOC recommends:
    During the installation process, use only new bolts and nuts.
  20. Step 22
    How to remove MERCEDES-BENZ SL 300 SL 3.0 (129.060) 1993 Control Arm - online easy-to-follow instructions
    Connect the ball joint to the steering knuckle.
  21. Step 23
    How to replace Control Arm on MERCEDES-BENZ SL (R129) 1994: download PDF manuals and video instructions
    Install the fastening bolt.
  22. Step 24
    How hard is it to do yourself: Control Arm replacement on SL R129 280 2.8 (129.058) 1995 - download illustrated guide
    Support the control arm. Use a hydraulic transmission jack.
  23. Step 25
    Need to know how to renew Control Arm on MERCEDES-BENZ SL 1996? This free workshop manual will help you to do it yourself
    Install the spring together with the compressor.
    Replacement: front lower arm – MERCEDES-BENZ SL (R129). Tip:
    Make sure that the coil spring is correctly positioned in its mounting seats.
  24. Step 26
    Changing of Control Arm on SL R129 1997 won't be an issue if you follow this illustrated step-by-step guide
    Position the control arm according to its mounting holes. Use a rubber mallet.
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