How to carry out replacement: Poly V-Belt CDI 2.2 (639.711, 639.713, 639.811, 639.813, 639.815) Mercedes Viano W639
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Change Mercedes Viano W639 CDI 3.0 (639.811, 639.813, 639.815) Poly V-Belt yourself – manuals and video tutorials

How to change serpentine belt on MERCEDES-BENZ Viano (W639) – replacement guide

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When to replace the Poly V-Belt on your MERCEDES-BENZ VIANO
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ VIANO (W639) CDI 2.2 (639.711, 639.713, 639.811, 639.813, 639.815), MERCEDES-BENZ VIANO (W639) CDI 2.0 (639.711, 639.713, 639.811, 639.813, 639.815), MERCEDES-BENZ VIANO (W639) CDI 2.2 4-matic (639.711, 639.713, 639.811, 639.813,..., MERCEDES-BENZ VIANO (W639) CDI 2.0 (639.711, 639.713, 639.811, 639.813, 639.815) … 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 VIANO (W639) and other MERCEDES-BENZ models
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Tools
Replacement: serpentine belt – MERCEDES-BENZ VIANO (W639). Tools you might need:
12-point socket # 17
Ratchet wrench
Fender cover
Wheel chock
Buy tools
Replacement: serpentine belt – MERCEDES-BENZ VIANO (W639). AUTODOC recommends:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – MERCEDES-BENZ VIANO (W639). Use the following procedure:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    Secure the wheels with chocks.
    Step 4
    Lift the car using a jack or place it over an inspection pit.
    Step 5
    How to change Poly V-Belt on Mercedes Viano W639 2003 - free PDF and video manuals
    Pull aside the V-ribbed belt tensioner pulley. Use 12-point socket No.17. Use a ratchet wrench.
  2. Step 6
    How to replace MERCEDES-BENZ VIANO (W639) CDI 2.2 (639.711, 639.713, 639.811, 639.813, 639.815) 2004 Poly V-Belt - step-by-step manuals and video guides
    Remove the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ VIANO (W639). AUTODOC experts recommend:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  3. Step 7
    Return the tensioner pulley to its initial position. Use 12-point socket No.17. Use a ratchet wrench.
    Step 8
    Pull aside the V-ribbed belt tensioner pulley. Use 12-point socket No.17. Use a ratchet wrench.
    Step 9
    Mercedes Viano W639 CDI 3.0 (639.811, 639.813, 639.815) 2005 Poly V-Belt replacement: free workshop manuals
    Install the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ VIANO (W639). Tip from AUTODOC:
    Make sure that the V-ribbed belt fits all pulleys snugly.
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