How to carry out replacement: Poly V-Belt 1.4 Siena
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Change Siena 1.0 Poly V-Belt yourself – manuals and video tutorials

How to change serpentine belt on FIAT Siena (178_, 172_) – replacement guide

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When to replace the Poly V-Belt on your FIAT SIENA
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
FIAT Siena (178_, 172_) 1.3 JTD … 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 Siena (178_, 172_) and other FIAT models
How to change Serpentine belt on Siena 1.4 – step-by-step instructions for straightforward car repair Serpentine belt
How to change Serpentine belt on Siena (178, 172) – tips for proper car maintenance
Serpentine belt for Siena (178, 172) Diesel (70 hp)
Tools
Replacement: serpentine belt – FIAT SIENA (178_). Tools you'll need:
Wire brush
Copper grease
Drive socket # 15
Drive socket # E18
Wheel impact socket #17
Ratchet wrench
Torque wrench
Crow bar
Wheel chock
Buy tools
Replacement: serpentine belt – FIAT SIENA (178_). Tip from AUTODOC experts:
  • All work should be done with the engine stopped.
Replacement: serpentine belt – FIAT SIENA (178_). Use the following procedure:
  1. Step 1
    How to change Poly V-Belt on Siena 1996 - free PDF and video manuals
    Secure the wheels with chocks.
  2. Step 2
    How to replace FIAT Siena (178_, 172_) 1.4 1997 Poly V-Belt - step-by-step manuals and video guides
    Loosen the wheel mounting bolts. Use wheel impact socket #17.
  3. Step 3
    Raise the front of the car and secure on supports.
    Step 4
    Siena 1.3 1998 Poly V-Belt replacement: free workshop manuals
    Unscrew the wheel bolts.
    AUTODOC recommends:
    Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. FIAT SIENA (178_)
  4. Step 5
    Changing Poly V-Belt on FIAT Siena (178_, 172_) 1.6 16V (178CXD1AAT) 1999 by yourself
    Remove the wheel.
  5. Step 6
    How to remove FIAT SIENA 1.4 Cat 2000 Poly V-Belt - online easy-to-follow instructions
    Pry up the hydraulic power steering belt. Use a crowbar. Turn the crankshaft pulley. Use a drive socket #E18. Use a ratchet wrench.
  6. Step 7
    How to replace Poly V-Belt on FIAT Siena (178_, 172_) 2001: download PDF manuals and video instructions
    Remove the hydraulic power steering belt.
  7. Step 8
    How hard is it to do yourself: Poly V-Belt replacement on Siena 1.3 (178CXS1AAI, 178BYA1AAT, 178CYA1AAT) 2002 - download illustrated guide
    Clean the tensioner pulley of the V-ribbed belt. Use a wire brush.
  8. Step 9
    Need to know how to renew Poly V-Belt on FIAT SIENA 2003? This free workshop manual will help you to do it yourself
    Pull aside the V-ribbed belt tensioner pulley. Use a drive socket #15. Use a ratchet wrench.
  9. Step 10
    Changing of Poly V-Belt on Siena 2004 won't be an issue if you follow this illustrated step-by-step guide
    Remove the V-ribbed belt.
  10. Step 11
    Return the tensioner pulley to its initial position.
    Replacement: serpentine belt – FIAT SIENA (178_). AUTODOC recommends:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
    Step 12
    FIAT SIENA 1.0 Poly V-Belt replacement: online guides and video tutorials
    Install the V-ribbed belt.
    AUTODOC recommends:
    Make sure that the V-ribbed belt fits all pulleys snugly.
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