Removing
Place the car on a two post lift.
Disconnect the battery.
Drain the engine coolant.
Remove the timing chain.
Attention. Close the inlet and outlet openings of the turbocharger heat exchanger with plugs (EP6DT engine), inlets and outlets of the turbocharger (EP6DT engine), the air inlet to the cylinder head.
Remove the camshaft locking tool.
Attention. Gradually loosen the intake and exhaust camshaft bearing bolts in a spiral pattern so that they are a few millimeters away from their joint plane. Start with the center bearings.
Mark bearing caps before removal.
Turn away bolts (1) and remove the camshaft bearing cap (2).
Turn away bolts (3) and remove the camshaft bearing cap (4).
Loosen the bolts gradually in a spiral (5) (start with center bearings).
Turn away bolts (5) and remove the main journal covers (6).
Attention. Protect O-rings from damage (8) And (9).
Remove intake camshaft (7).
Loosen the bolts gradually in a spiral (10) (start with center bearings).
Turn away bolts (10) and remove the camshaft bearing caps (11).
Remove exhaust camshaft (12).
In case of removal of stoppers and hydraulic pushers mark their position before removal.
Installation
Attention. Do not use abrasive or cutting attachments or tools. The surfaces to be joined must not show signs of impact or cracks. Clean the mating surfaces of the cylinder head covers.
Note. Replace all seals every time.
Attention. Check that the bearing surfaces and bearings of the camshafts, as well as the gaskets, are free from impact marks and scratches.
Check camshafts (7) And (12), O-rings (8) And (9), as well as camshaft bearing caps (6) And (11).
Clean the surfaces adjacent to the cylinder head and shaft bearing caps.
Remove oil from the threaded holes for attaching the camshaft bearing caps.
Lubricate the edge of the camshaft journals with engine oil.
Lubricate the body of the hydraulic tappets with engine oil (13). Reinstall the hydraulic lifters (13) (keep their original position).
Make sure the hydraulic tappets rotate freely in the cylinder head.
Check for springs (14) on rockers (15).
Attention. Spring (14) in no case should it be deformed. Even with its slight deformation, there is a risk that the rocker (15) will not be held relative to the hydraulic pusher (13).
Install the rocker arms (15) (keep their original position).
Reinstall the camshafts and bearing caps.
Install the camshaft locking tool.
Pre-tighten in the helix of the bolts (5) (start with the center bearings) (see chapter «Tightening torques for the mechanical part of gasoline and diesel engines»).
Tighten the bolts (5) torque 10 Nm.
Note. Proceed sequentially from bolt to bolt in the order shown.
Reinstall the timing chain.
Remove the plugs.
Fill the cooling system.
Connect the battery.