TorqFix

Timing belt replacement: Peugeot 407 (EW12E4, EW12J4)

Step-by-step timing belt replacement for the Peugeot 407 (EW12E4/EW12J4): 96 steps. What to remove, in what order, and what to check after.

Timing belt renewal on the Peugeot 407 2.2 16V, engine codes EW12J4 and EW12E4. The engine mount reaction link and coolant reservoir come out of the way, then the ancillary belt, crankshaft pulley and timing belt covers. With the crankshaft locked and the inlet and exhaust camshafts pinned, the tensioner is released and the old belt comes off. The new belt is routed in the stated sequence and the tensioner turned to maximum tension before being backed off until its pointer lines up with the mark. The crankshaft pulley bolt is renewed and torqued in stages. These engines punish shortcuts: never turn the crankshaft backwards, and if the tensioner marker will not reach position the pulley is suspect. After two turns the inlet locking tool must fit and the tensioner marks align.

96 steps 2 engine codes

🧭 Before you start

Remove reaction link, coolant reservoir, ancillary belt, pulley and covers. Lock the crankshaft and camshafts, release the tensioner and remove the belt. Fit the new belt in sequence, set the tensioner to its marks, fit a new crankshaft pulley bolt in stages, remove the tools and turn two turns to recheck. Refit covers, reaction link, ancillary belt and reservoir.

Fits: platform codes 2.2, 16V

  • Timing position: the crankshaft or camshaft is set and locked during this job
  • Special tools named: locking tool, locking pin

Don't miss

  • Never turn the engine opposite to its normal direction of rotation.
  • Avoid bending, twisting or stretching the new belt.
  • Renew the crankshaft pulley bolt and tighten it in stages.
  • If the tensioner marker cannot reach its position, check the tensioner pulley.
  • After two crankshaft turns, the inlet camshaft locking tool must fit and the tensioner marks must align.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 Engine codes this applies to

EW12E4(3FY)EW12J4(3FZ)

📐 19 workshop diagrams for EW12E4(3FY)

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

407 EW12J4 — EW12E4(3FY) · diagram 1
407 EW12J4 — EW12E4(3FY) · diagram 2
407 EW12J4 — EW12E4(3FY) · diagram 3
407 EW12J4 — EW12E4(3FY) · diagram 4
407 EW12J4 — EW12E4(3FY) · diagram 5
407 EW12J4 — EW12E4(3FY) · diagram 6
407 EW12J4 — EW12E4(3FY) · diagram 7
407 EW12J4 — EW12E4(3FY) · diagram 8
+ 11 more diagrams
🔒 19 workshop diagrams for this job Ask about your Peugeot EW12E4(3FY) — free or sign up free to see the drawings

📋 Procedure

Preparation and removal

  1. Never turn the engine in the direction opposite to that of normal operation
  2. Crankshaft locking tool:
  3. Turn the ignition off
  4. Camshaft locking pin:
  5. Disconnect the battery
EW12E4(3FY)? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Use a special tool:
  2. Check the belt(s) for cracks, fraying, wear and oil contamination
  3. Remove the reaction link
  4. Note: Avoid bending, torsion or traction
  5. Remove the clamp
  6. Use the special tools
  7. Turn the tensioner to the maximum timing belt tension
  8. Remove the timing belt lower cover
  9. Loosen the tensioner
  10. Turn the tensioner clockwise
  11. Remove the timing belt
  12. Renew if necessary
  13. Loosen the crankshaft pulley centre bolt
  14. Loosen the tensioner pulley bolt

Installation and checks

  1. Installation sequence:
  2. Remove the camshaft gearwheel locking tool
  3. Remove the tensioner pulley locking tool
  4. Manual transmission:
  5. Fit the timing belt lower cover
  6. Fit the crankshaft pulley
  7. Inlet:
  8. Exhaust:
  9. Turn the tensioner anti-clockwise to adjust the timing belt tension
  10. Remove the crankshaft locking tool
  11. Check for leaks
  12. Stage 2:
  13. Turn the tensioner clockwise
  14. Align the marks on the tensioner
  15. Note: If the tensioner marker does not reach the position shown (arrow), the tensioner pulley must be renewed
  16. Tighten the tensioner pulley bolt
  17. Renew the crankshaft pulley bolt
  18. Tighten the crankshaft pulley centre bolt
  19. Use a new bolt
  20. Stage 1:
  21. Stage 2:
  22. Remove all the locking tools
  23. Rotate the crankshaft 2 turns
  24. Fit the inlet camshaft locking tool
  25. Check the marks on the tensioner
  26. Repeat the procedure if the tension marks are misaligned
  27. Refit the timing belt upper cover
  28. Refit the reaction link
  29. Refit the ancillary drive belt
  30. Refit the coolant reservoir
  31. Reconnect the battery earth cable
Workshop diagrams

Ask TorqFix about your Peugeot EW12E4(3FY) — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.

Ask about your Peugeot EW12E4(3FY) — free → or sign up free to see the drawings

Other PEUGEOT procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

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Workshop data on this page last updated 20 Sep 2026.