Mercedes Coupes/Sedans/Wagons 1974-1984 Repair Guide

Springs

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REMOVAL & INSTALLATION Except 190, 1974-76 230, 240D, 280, 280C, 1975-76 300D, 380SL, 380SLC, 450SL and 450SLC Models



See Figures 1, 2 and 3

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Fig. Fig. 1: Typical components of the "Zero Offset" type front suspension



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Fig. Fig. 2: Cross-sectional view of the "Zero Offset" type front suspension



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Fig. Fig. 3: Front spring components on all models except 190D and 190E; 1974-76 230 and 240D, 280 and 280C; 1975-76 300D, 380SL, 380SLC, 450SL and 450SLC models

  1. Jack and support the front of the car and support the lower control arm.
  2.  
  3. Remove the wheel. Unbolt the upper shock absorber mount.
  4.  
  5. Install a spring compressor and compress the spring.
  6.  
  7. Remove the front spring with the lower mount.
  8.  
  9. Installation is the reverse of removal. Tighten the upper shock absorber suspension.
  10.  

Tighten the eccentric bolt on the lower control arm only with the car resting on its wheels.

1974-75 230 and 240D, 280, 280C, 1975-76 300D, 380SL, 380SLC, 450SL and 450SLC Models


WARNING
Be extremely careful when attempting to remove front springs, as they are compressed and under considerable load.

  1. Jack up the front of the car, put up jackstands and remove the front wheels.
  2.  
  3. Support the control arm and remove the lower shock absorber and disconnect the sway bar.
  4.  
  5. First punchmark the position of the eccentric adjusters, then loosen the hex bolts.
  6.  
  7. Support the lower control arm with a jack.
  8.  
  9. Knock out the eccentric pins and gradually lower the arm until spring tension is relieved.
  10.  
  11. The spring can now be removed.
  12.  

Check caster and camber after installing a new spring.

  1. Installation is the reverse of removal.
  2.  
  3. For ease of installation, tape the rubber mounts to the springs.
  4.  
  5. If the eccentric adjusters were not matchmarked, install the eccentric bolts as illustrated under "Front End Alignment."
  6.  

190D and 190E Models See Figures 4 and 5

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Fig. Fig. 4: Common front suspension components used on the 190D and 190E models



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Fig. Fig. 5: Front spring components used on the 190D and 190E models

  1. Raise the front of the vehicle and support it with jackstands. Remove the wheel.
  2.  
  3. Remove the engine compartment lining underneath the vehicle (if so equipped).
  4.  
  5. Install a spring compressor so that at least 7 1 /2 coils are engaged.
  6.  
  7. Support the lower control arm with a floor jack and then loosen the retaining nut at the upper end of the damper strut.
  8.  


CAUTION
NEVER loosen the damper strut retaining nut unless the wheels are on the ground, the control arm is supported or the springs have been removed.

  1. Lower the jack under the control arm slightly and then remove the spring toward the front.
  2.  
  3. On installation, position the spring between the control arm and the upper mount so that when the control arm is raised, the end of the lower coil will be seated in the impression in the control arm.
  4.  
  5. Use the jack and raise the control arm until the spring is held securely.
  6.  
  7. Using a new nut, tighten the upper end of the damper strut to 44 ft. lbs. (60 Nm).
  8.  
  9. Slowly ease the tension on the spring compressor until the spring is seated properly and then remove the compressor.
  10.  
  11. Installation of the remaining components is in the reverse order of removal.
  12.  

 
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