When to replace the Poly V-Belt on your MERCEDES-BENZ E-CLASS
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ E-Class Saloon (W124) E 300 D (124.131), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D 4-matic (124.333), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D (124.133) View more

The steps may slightly vary depending on the car design.

How to change serpentine belt on MERCEDES W124 [TUTORIAL AUTODOC]

video
All the parts you need to replace – Poly V-Belt for E-Class Saloon (W124) and other MERCEDES-BENZ models
Tools
Replacement: serpentine belt – Mercedes W124. List of the tools you'll need:
Combination spanner #16
3/8" square drive extension bar
Fender cover
Replacement: serpentine belt – Mercedes W124. AUTODOC recommends:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – Mercedes W124. Take the following steps:
  1. Step 1
    How to change Poly V-Belt on Mercedes E Class W124 1993 - free PDF and video manuals
    Open the bonnet.
  2. Step 2
    How to replace MERCEDES-BENZ E-Class Saloon (W124) E 250 D 2.5 (124.126, 124.129) 1994 Poly V-Belt - step-by-step manuals and video guides
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
  3. Step 3
    Mercedes E Class W124 E 300 D 3.0 (124.131) 1995 Poly V-Belt replacement: free workshop manuals
    Unscrew the fastening bolt of the belt tensioner. Use a combination spanner #16 (2 pieces).
  4. Step 4
    Changing Poly V-Belt on MERCEDES-BENZ E-Class Saloon (W124) E 220 2.2 (124.022) 1996 by yourself
    Use a lever of the correct diameter to loosen the tensioner and remove the fastening bolt. Use a 3/8" square drive extension bar.
  5. Step 5
    How to remove MERCEDES-BENZ E-CLASS E 200 D 2.0 (124.120) 1993 Poly V-Belt - online easy-to-follow instructions
    Remove the V-ribbed belt.
    AUTODOC recommends:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  6. Step 6
    How to replace Poly V-Belt on MERCEDES-BENZ E-Class Saloon (W124) 1994: download PDF manuals and video instructions
    Install the V-ribbed belt.
    Replacement: serpentine belt – Mercedes W124. Professionals recommend:
    Make sure that the V-ribbed belt fits all pulleys snugly.
  7. Step 7
    How hard is it to do yourself: Poly V-Belt replacement on Mercedes E Class W124 E 250 2.5 Turbo Diesel (124.128) 1995 - download illustrated guide
    Return the tensioner to its original position and install the fastening bolt. Use a 3/8" square drive extension bar.
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DIY MERCEDES-BENZ E-Class Saloon (W124) Poly V-Belt replacement - online guide
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