407 DT20C — PEUGEOT
407 DT20C on Peugeot: 100 steps, engines DT20C(X8Z). What to remove, in what order, and what to check after.
Workshop procedure for PEUGEOT — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform codes 3.0, HDIF, V6
- Opens: coolant, fuel
- Timing position: the crankshaft or camshaft is set and locked during this job
- Special tools named: locking pin
Don't miss
- Never turn the engine in the direction opposite to that of normal operation
🔧 Engine codes this applies to
📋 Procedure
Preparation and removal
- Lifting eye:
- Camshaft locking pins:
- Check the condition of the coolant pump
- Never turn the engine in the direction opposite to that of normal operation
- Mixing chamber housing
- Remove the right wheel arch liner
- Note: Avoid bending, torsion or traction
- Crankshaft pulley
- Remove the EGR pipe
- Use an Allen key
- Disconnect the fuel lines
- Remove the EGR pipe
- Remove the coolant pipe
- Remove the intercooler air duct
- Remove the nut
- Remove the ancillary drive belt
- Fit a lifting eye to the engine
- Use a hoist to support the engine
- Remove the timing belt upper covers
- Remove the engine support
- Align the camshaft gearwheel marks as shown
- Remove the catalytic converter together with the diesel particulate filter
- Remove the flywheel inspection cover plate
- Lock the crankshaft by fitting a locking pin into the flywheel
- Fit the camshaft locking pins
- Remove the crankshaft pulley
- Remove the timing belt lower cover
- Remove the timing belt
Installation and checks
- Fit the timing belt in the sequence shown
- Tighten the tensioner pulley bolt
- Refit the air inlet duct
- Remove all the locking tools
- Turn the engine 8 revolutions by hand
- Refit the flywheel cover plate
- Refit the timing belt lower cover
- Refit the engine support
- Remove the lifting eye
- Refit the ancillary drive belt
- Refit the nut
- Refit the intercooler air duct
- Refit the coolant pipe
- Refit the EGR pipe
- Reconnect the coolant temperature sensor
- Refit the mixing chamber housing with EGR valve
- Refit the air inlet duct
- Refit the fuel line bracket
- Reconnect the fuel lines
- Reconnect the electrical connector(s)
- Refit the EGR pipe
- Refill the cooling system
- Refit the LDS fluid reservoir cap
- Refit the right wheel arch liner
- Refit the front right wheel
- Refit the engine lower cover
- Lower the vehicle
- Refit the engine upper cover
- Reconnect the battery
Other PEUGEOT procedures
- Citroen C5 DT20C EGR valve removal
- Citroen C6 DT20C EGR valve removal
- C6 - DT20C
- 407 - DT20C
- Peugeot 407 and EW10J4/EW7J4 timing belt replacement
- Peugeot 306 DW8/DW8B timing belt replacement
- 406 XUD9 turbo
- Peugeot EP6CDTX timing chain replacement
- 1007 - DV6TED4 - BE4R gearbox removal installation
- 4008 2.0i 4B11
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.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.