When to replace the Poly V-Belt on your MERCEDES-BENZ A-CLASS
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W168) A 160 CDI (168.006), MERCEDES-BENZ A-Class (W168) A 170 CDI (168.009, 168.109) View more

The steps may slightly vary depending on the car design.

How to change serpentine belt on MERCEDES W168 [TUTORIAL AUTODOC]

video
All the parts you need to replace – Poly V-Belt for A-Class (W168) and other MERCEDES-BENZ models
Tools
Replacement: serpentine belt – Mercedes W168. Tools you might need:
Combination spanner #15
Replacement: serpentine belt – Mercedes W168. AUTODOC experts recommend:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – Mercedes W168. Use the following procedure:
  1. Step 1
    Open the bonnet.
    Step 2
    How to change Poly V-Belt on Mercedes W168 1997 - free PDF and video manuals
    Lift the car using a jack or place it over an inspection pit.
  2. Step 3
    How to replace MERCEDES-BENZ A-Class (W168) A 140 1.4 (168.031, 168.131) 1998 Poly V-Belt - step-by-step manuals and video guides
    Pull aside the V-ribbed belt tensioner pulley. Use a combination spanner #15.
  3. Step 4
    Mercedes W168 A 170 CDI 1.7 (168.009, 168.109) 1999 Poly V-Belt replacement: free workshop manuals
    Remove the V-ribbed belt.
    Replacement: serpentine belt – Mercedes W168. Tip from AUTODOC:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  4. Step 5
    Return the tensioner pulley to its initial position.
    Step 6
    Changing Poly V-Belt on MERCEDES-BENZ A-Class (W168) A 170 CDI 1.7 (168.008) 2000 by yourself
    Install the V-ribbed belt.
    Replacement: serpentine belt – Mercedes W168. Tip:
    Make sure that the V-ribbed belt fits all pulleys snugly.
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DIY MERCEDES-BENZ A-Class (W168) Poly V-Belt replacement - online guide
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