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How to change serpentine belt on PEUGEOT 405 I Saloon (15B) – replacement guide
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Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
PEUGEOT 405 I (15B) 1.9 Diesel, PEUGEOT 405 I (15B) 1.8 Turbo Diesel … View more
The steps may slightly vary depending on the car design.
PEUGEOT 405 I (15B) 1.9 Diesel, PEUGEOT 405 I (15B) 1.8 Turbo Diesel … 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 405 I (15B) and other PEUGEOT models

Wire brush
Torque wrench
Drive socket # 27
HEX bit no.H8
1/4" square drive extension bar
Wheel impact socket #19
Ratchet wrench
Clip removal tool
Phillips screwdriver
Fender cover
Wheel chock
Replacement: serpentine belt – PEUGEOT 405 I (15B). Tools you might need:
- All work should be done with the engine stopped.
Replacement: serpentine belt – PEUGEOT 405 I (15B). Use the following procedure:
- Step 1Open the hood.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Secure the wheels with chocks.Step 4
Loosen the wheel mounting bolts. Use wheel impact socket #19. - Step 5Raise the car.Replacement: serpentine belt – PEUGEOT 405 I (15B). AUTODOC recommends:If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.Step 6
Unscrew the wheel bolts.AUTODOC recommends:Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. PEUGEOT 405 I (15B) - Step 7
Remove the wheel. - Step 8
Unscrew and remove the wheel arch cover fasteners. Use a clip removal tool. Use a Phillips screwdriver. - Step 9
Remove the wheel arch cover. - Step 10
Release the coolant pipe fasteners. - Step 11
Clean the tensioner pulley fastener. Use a wire brush. - Step 12
Loosen the tensioner pulley fastener. Use HEX No.H8. Use a ratchet wrench. - Step 13
Pull aside the V-ribbed belt tensioner pulley. Use a 1/4" square drive extension bar. Use a ratchet wrench. - Step 14
Remove the V-ribbed belt.Replacement: serpentine belt – PEUGEOT 405 I (15B). Tip from AUTODOC experts:Check the condition of the tensioner pulley and idler pulley. Replace them if necessary. - Step 15
Install the V-ribbed belt.Replacement: serpentine belt – PEUGEOT 405 I (15B). Professionals recommend:Make sure that the V-ribbed belt fits all pulleys snugly. - Step 16
Tension the belt by turning the tensioner pulley clockwise. Use a 1/4" square drive extension bar. Use a ratchet wrench.Replacement: serpentine belt – PEUGEOT 405 I (15B). Tip:Keep the belt taut until you've tightened the tensioner pulley fastener. - Step 17
Tighten the fastener of the serpentine belt tensioner pulley. Use HEX No.H8. Use a torque wrench. Tighten it to 35 Nm torque.
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