Instructions on replacing the power steering pump or the power steering reservoir on Mercedes Benz V6 and V8 cylinder engines, such as the M112 and M113 engines. Symptoms of Power Steering Failure are:

• Whining or squealing noise
• Wheels are difficult to turn
• Hard steering

Before replacing a power steering pump, ensure you have not lost power steering fluid. Check out this video if you need help checking the power steering fluid. If your fluid level is low, use Mercedes Benz Power Steering Fluid. Low-power steering fluid will cause a whine, especially when you turn your steering wheel. You may have a very small leak that only needs topping off.

ML Class W163 issues: ML320, ML430, ML500 Mercedes-Benz even issued a Technical Bulletin for the steering issues, such as squeaks and squeals noises from the area of the rack and pinion when turning the steering wheel left and right. According to the manufacturers, this noise comes from insufficient lubrication at the shaft sealing ring in the control head. The dealer’s solution is to remove 50 ml of power steering fluid and replace it with 50 ml of Lubrizol 6178.  Technical Bulletin Order No; T~B~46.20/31h. Supersedes: T-B–46.20/31a 

DO IT YOURSELF

Video

How to replace the power steering Pump, Reservoir, and Driver Belt tensioner on a Mercedes Benz.

Instructions

Tools you will need:

• You can get a set of female E-Torx socket tools
• Screwdrivers
• 17 mm deep socket to take off the serpentine belt.
• Torx sets such as these. 

Instructions: 

1.  Remove the serpentine belt—instructions on how to do that with the video are here. 

2. Open the power steering fluid reservoir and extract all the power steering fluid.

3. Detach the return line from the power steering reservoir housing.
   

4. Unbolt the high-pressure line. Ensure not to damage the small O ring when you pull out the line.

5. Use a flat screwdriver to pull out the C-shaped locking ring on the back of the power steering reservoir.
   
   

   

6. Remove the bolt on the front of the power steering reservoir.
   
   

7. Remove the two bolts on the back of the power steering pump. They are a pain to get to, but you can do it.  You can use a 3/8 on the rear bolts if you have a ratcheting wrench like this. You will save time and do the job faster with ratcheting wrenches available.

   

   

   

8. Remove the two E Torx bolts on the front of the power steering pump.
   

9. Remove the attachment arm from the old power steering pump and attach it to the new power steering pump. Note: You can also leave the arm attached to the engine and unbolt these bolts directly from the power steering housing. If you go this route, you must unbolt the two bolts through the power steering pulley.

10. 

11. NOTE: In step 10. A ground wire may also be connected to the power steering pump. If you are having difficulty getting to that bolt, don’t bother taking that off until you have the power steering pump lose. Once the power steering pump bolts are loose, you can move the PS pump and loosen the ground bolt.
    

12. Reinstall in reverse order. Ensure you reinstall the rubber rings for the return line and where the reservoir connects to the power steering pump.
    
    
    

13. Fill it with the correct OEM power steering fluid, or use Febi Bilstein Power Steering Fluid.
    

14. Congratulations! You are done.

Related Article:

• Power Steering Pump Replacement Mercedes Benz Youcanic

INTERCHANGES PART NUMBERS:

86-01183 AN , 0034666001 , 003466600160 , 003466600180 , 003466600188 , 004 466 14 01 , 004 466 14 01 88 , 0044661401 , 004466140160 , 004466140180 , 004466140188 , 0044661401-88 , A0034666001 , A003466600160 , A003466600180 , A003466600188 , A0044661401 , A004466140160 , A004466140180 , A004466140188

APPLICATIONS: 

• 2005-2006 Chrysler Crossfire Base 6Cyl 3.2L 195CID Power Steering Pump
• 2005-2006 Chrysler Crossfire Limited 6Cyl 3.2L 195CID Power Steering Pump
• 98-2000 Mercedes-Benz C280 Base 6Cyl 2.8L Power Steering Pump
• 98-2000 Mercedes-Benz C43 AMG Base 8Cyl 4.3L Power Steering Pump
• 2002 Mercedes-Benz CL55 AMG Base 8Cyl 5.5L 335CID Power Steering Pump
• 98-2002 Mercedes-Benz CLK320 Base 6Cyl 3.2L Power Steering Pump
• 2003 Mercedes-Benz CLK320 Base 6Cyl 3.2L Power Steering Pump —View Notes
• 99-2003 Mercedes-Benz CLK430 Base 8Cyl 4.3L Power Steering Pump
• 2002 Mercedes-Benz CLK55 AMG Base 8Cyl 5.5L 335CID Power Steering Pump
• 98-2002 Mercedes-Benz E320 4Matic 6Cyl 3.2L Power Steering Pump —View Notes
• 98-2002 Mercedes-Benz E320 Base 6Cyl 3.2L Power Steering Pump —View Notes
• 2000-2002 Mercedes-Benz E430 4Matic 8Cyl 4.3L Power Steering Pump — View Notes
• 98-2002 Mercedes-Benz E430 Base 8Cyl 4.3L Power Steering Pump —View Notes
• 99-2000 Mercedes-Benz E55 AMG Base 8Cyl 5.5L 332CID Power Steering Pump — View Notes
• 99-2002 Mercedes-Benz E55 AMG Base 8Cyl 5.5L 335CID Power Steering Pump — View Notes