How to carry out replacement: Poly V-Belt 250 D 2.5 (124.185) Mercedes S124 (W124)
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Change Mercedes S124 (W124) 250 D 2.5 (124.185) Poly V-Belt yourself – manuals and video tutorials

How to change serpentine belt on MERCEDES-BENZ W124 Estate (S124) – replacement guide

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When to replace the Poly V-Belt on your MERCEDES-BENZ 123 SERIES
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ W124 Estate (S124) 300 TD T, MERCEDES-BENZ W124 Estate (S124) 300 T Turbo-D (124.193), MERCEDES-BENZ W124 Estate (S124) 300 T Turbo-D, MERCEDES-BENZ W124 Estate (S124) 300 T Turbo-D 4-matic (124.393), MERCEDES-BENZ W124 Estate (S124) 300 T Turbo-D 4-matic (124.393), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190) … 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 – Poly V-Belt for W124 Estate (S124) and other MERCEDES-BENZ models
How to change Serpentine belt on Mercedes S124 (W124) 250 D 2.5 (124.185) – step-by-step instructions for straightforward car repair Serpentine belt
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Serpentine belt for W124 Estate (S124) Diesel (109 hp)
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Serpentine belt for W124 Estate (S124) Diesel (110 hp)
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Serpentine belt removal & installation, incredibly easy steps for W124 Estate (S124)
Serpentine belt for W124 Estate (S124) Diesel (143 hp)
Changing Serpentine belt on W124 Estate (S124) – tips for first time repair
Serpentine belt for W124 Estate (S124) Diesel (147 hp)
Main steps for Serpentine belt replacement on W124 Estate (S124)
Serpentine belt for W124 Estate (S124) Diesel (143 hp)
How to change Serpentine belt on W124 Estate (S124) – tips for proper car maintenance
Serpentine belt for W124 Estate (S124) Diesel (147 hp)
Simple DIY car repair steps – Replacing Serpentine belt on W124 Estate (S124)
Serpentine belt for W124 Estate (S124) Diesel (136 hp)
Tools
Replacement: serpentine belt – MERCEDES-BENZ KOMBI Estate (S124). List of the tools you'll need:
Combination spanner #16
3/8" square drive extension bar
Fender cover
Buy tools
Replacement: serpentine belt – MERCEDES-BENZ KOMBI Estate (S124). AUTODOC recommends:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – MERCEDES-BENZ KOMBI Estate (S124). Take the following steps:
  1. Step 1
    Open the bonnet.
    Step 2
    How to change Poly V-Belt on Mercedes S124 (W124) 1985 - free PDF and video manuals
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
  2. Step 3
    How to replace MERCEDES-BENZ W124 Estate (S124) 250 D 2.5 (124.185) 1986 Poly V-Belt - step-by-step manuals and video guides
    Unscrew the fastening bolt of the belt tensioner. Use a combination spanner #16 (2 pieces).
  3. Step 4
    Mercedes S124 (W124) 300 3.0 Turbo Diesel (124.193) 1987 Poly V-Belt replacement: free workshop manuals
    Use a lever of the correct diameter to loosen the tensioner and remove the fastening bolt. Use a 3/8" square drive extension bar.
  4. Step 5
    Changing Poly V-Belt on MERCEDES-BENZ W124 Estate (S124) 300 D 3.0 (124.190) 1988 by yourself
    Remove the V-ribbed belt.
    AUTODOC recommends:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  5. Step 6
    How to remove MERCEDES-BENZ 123 SERIES 230 TE 2.3 (124.083) 1989 Poly V-Belt - online easy-to-follow instructions
    Install the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ KOMBI Estate (S124). Professionals recommend:
    Make sure that the V-ribbed belt fits all pulleys snugly.
  6. Step 7
    How to replace Poly V-Belt on MERCEDES-BENZ W124 Estate (S124) 1990: download PDF manuals and video instructions
    Return the tensioner to its original position and install the fastening bolt. Use a 3/8" square drive extension bar.
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