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Mercedes-Benz steering & suspension repair questions and answers

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  • willy
    willy - 2008 Mercedes Benz ML350 - Steering & Suspension - 8/19/2012
    When I drive for a couple of miles. Then, when I park while I applying the break pedal. The steering and too heavy.
    I have to cool down the engine for at least an hour.
     
    0 answer
  • Bruce Smith
    Bruce Smith - 2000 Mercedes Benz S430 - Steering & Suspension - 8/10/2012
    R front strut with airmatic......NOT ABC Are they fairly easy to repair with parts and boot kit?
     
    • Jimm
      8/10/2012 Jimm
      Part Number is 220 320 25 38, price was around $62.00 to $80.00 for the rebuild kit from; (www.oempartsdirect.com) they are fairly complicated to repair - you will need the tool to remove the circlip on top of the strut. The second tool is to remove the brass valve and insert a new one without scratching.
      Otherwise, it may be just as cost-effective to replace the assembly with a new unit. Try the many on-line auto parts sources, such as; www.RockAuto.com, www.autopartswarehouse.com, or www.partstrain.com for the replacement parts.

      You may order the kit on line from www.aboveallmotorwerks.com, the part # is 220-320-25-38 the same part number if you try to order through the dealership, just about $30.00 cheaper in some cases at $115.00 apiece vs the dealers $135.00 - 179.00, depending on the dealership. You can also purchase the tool on ebay from a company called kinetik (auto equiment & tools inc), again the price on this was $85.00. It is called a Mercedes Seal Cap Remover Top Air Suspension Strut Tool. As far as the job it is pretty straight forward.

      (Note: This guidance is for general information and is not intended to substitute for informed professional advice, use at your own risk.)

      Take and remove the air lines. (car supported, stands or lift, weight off the suspension.) Then tape the air lines ends up, cap the nipple with tape as well. (on the strut cap.)

      Now, take a small chisel after the resin in the old cap, ideally it will come out in pretty clean solid pieces. Once you have all that cleaned out you take and remove the old nipple. Next you attach the strut tool to the strut tower to press the old caps down far enough to release retaining clip. The cap has to go down roughly 5mm to get the retaining ring out. Once the clip is out the cap will basically spring out on its own.

      Clean the hole up, lube the new cap and use your tool to press the new cap down enough to set the new ring. There is a recess in the new cap that the ring has to lock into as well as the groove in the strut cap. You'll get a better visual once you have the old one out.

      Once the cap is seated install the new nipple and airline and you are ready to go.

      Before lowering the car you need to start the engine to allow the pump to repressurize the strut prior to letting the car all the way down.

      The press is pretty simple and lightweight. 3 legs set to match the strut tower studs. Roughly 6" tall. Then the center is a big washer that the legs are welded to and then a 12mm nut is welded in the middle. When setting the tool you will see that it fits over the three strut tower bolts. You need to attach the tool one nut at a time to prevent strut from slipping out of place, again this will make more since when you get into the job.
  • pacgas
    pacgas - 1985 Mercedes Benz 500SEL - Steering & Suspension - 8/10/2012
    My car dives with the rear end of the body hanging a lot lower than normal and it is very stiff, so much so that every l
    every bump, however small is felt as if there was no suspension whatsoever.
     
    • Jimm
      8/10/2012 Jimm
      Most likely, this is due to worn out struts and shock absorbers. How many mlies are on the current struts and rear shocks? If over 50,000 miles or so - time for replacement.
      Try the many on-line auto parts sources, such as; www.RockAuto.com or www.autopartswarehouse.com for the replacement parts.
      For example, they (Rock Auto) list the rear shock absorbers for around $14.00 each for your vehicle.
      Jimm
      8/11/2012 pacgas
      I should have mentioned, this model has a hydraulic suspension with a hydraulic reservoir in the engine compartment. It takes a special fluid that is very expensive. There is NO leaks from the hydraulics in the rear, yet the rear rides as if on a solid suspension without any hydraulic dampening .
  • rockster
    rockster - 1994 Mercedes Benz SL600 - Steering & Suspension - 8/8/2012
    How many hours would it take to install a steering box kit
     
    0 answer
  • ems12
    ems12 - 1992 Mercedes Benz 300SE - Steering & Suspension - 7/28/2012
    How do i stop the sqeaking?.
    the suspension on my rear drivers side squeaks really bad. i looked under the car and im pretty sure ive located the problem area. its the arm that runs from the spring/strut to another piece of metal underneath the car, im pretty sure its where the two are bolted ...
     
    • Jimm
      7/28/2012 Jimm
      This may be the trailing arm - connects the rear axle to the frame or underbody. The trailing arm bushing may be dry. If this is the component - often the trailing arm can be loosened and removed from the bushing end for lubrication. Use white lithium grease on the bushing when taken apart for inspection and cleaning.

      The rear differential oil should be; type GL-5 90 weight lubricant.
      Jimm
      7/28/2012 ems12
      thanks will do. its much appreciated
  • Frank
    Frank - 2002 Mercedes Benz S500 - Steering & Suspension - 7/27/2012
    What could cause the components on the steering wheel to stop working?
    The audio controls /message center selector on the steering wheel stopped working. Also, the horn no longer works an d the SRS light stays on!
     
    0 answer
  • Hank
    Hank - 1980 Mercedes Benz 450SLC - Steering & Suspension - 7/19/2012
    I'm told the right rear control arm is close to $3000.00. Is this in the ballpark?
     
    • Jimm
      7/19/2012 Jimm
      Try the many on-line auto parts sources, such as; www.RockAuto.com, www.autopartswarehouse.com, www.discountmbparts.com or www.autopartsfair.com for the replacement parts- such as the rear control arm - to list a few sources.
      Don't forget to replace the control arm bushings and have a wheel alignment performed.
  • Kathy
    Kathy - 2003 Mercedes Benz S600 - Steering & Suspension - 7/17/2012
    Front end makes a popping sound and rattles.plus it bounce like its bottoms out
     
    • BackYardMechanic
      7/17/2012 BackYardMechanic
      Any car that bounces, as you say yours down is time for shock and struts now. Guessing rattling and popping sound is from bad shocks. You hit a little bump and your car goes down, versus the shocks absorbing the bump. Press on the fender and it bounces more then twice, then most like time for shocks on your vehicle.

      Also, buy a Hane's Auto Repair book, for your vehicle year and model at any part store. These books have diagnostic features to help you on any problem with your car.
  • ike
    ike - 2001 Mercedes Benz S600 - Steering & Suspension - 7/17/2012
    The first of my passager side is down and the other side is up,what wrong it wont lift up..
     
    • BackYardMechanic
      7/17/2012 BackYardMechanic
      Rephrase your question as I do not understand what you mean by " first of my passenger side is down."
  • leonard M
    leonard M - 2006 Mercedes Benz E350 - Steering & Suspension - 7/16/2012
    When I turn the steering wheel I hear a knock that comes from the driver side of car... Maybe from under hood
    I also hear the knocking when driving at low speed
     
    0 answer
  • delman
    delman - 2004 Mercedes Benz E320 - Steering & Suspension - 7/15/2012
    Why does my car make a squeking sound when it is running and goes over a bump in the road or over any uneven surface ?
    The squeak also occurs when it is parked and I push down on the left front end of the car. No engine lights are on.First noticed the squeaking sound when I roll the window down while driving.
     
    0 answer
  • abdul Rasheed
    abdul Rasheed - 1985 Mercedes Benz 300SD - Steering & Suspension - 7/15/2012
    What is the procedure in installing castor bushings on 1985 Mercedes 300sd?
    When I hit a bump in the road the rattles
     
    0 answer
  • gswoope
    gswoope - 2005 Mercedes Benz ML350 - Steering & Suspension - 7/10/2012
    How to replace rear wheel bearing
    Wheels are not balanced
     
    0 answer