Valve gear – assembly overview and fastening

• 1 Seal
  • Do not additionally oil or grease the oil seal sealing lip.
  • Before installing, remove residual oil from camshaft journal using a clean cloth.
  • To install, mask off groove on camshaft taper (e.g. using Sellotape)
  • Removing and installing ⇒ 3.6 Checking hydraulic compensation elements
• 2 10 Nm
• 3 Guide pins
  • 10 Nm
• 4 Bearing frame
  • Observe sequence for loosing and tightening ⇒ 3.5 Removing and installing camshafts
  • Seal with sealant as per ⇒ ETKA (Electronic

    Parts Catalogue)

• 5 Exhaust camshaft
• 6 Inlet camshaft
• 7 Roller rocker fingers
  • Mark installation position
  • Do not interchange
  • Check roller bearing for ease of movement.
  • Oil cam contact surface before installing.
  • Removing and installing ⇒ 3.4.3 Checking valve guides
• 8 Hydraulic compensation element
  • Mark installation position
  • Lubricate contact surfaces before installing.
• 9 Cylinder head
  • See note ⇒ 1.2.3 Removing and installing injector seal in cylinder head cover.
  • Removing and installing ⇒ 1.3 Assembly overview - cylinder head
• 10 Hall sender - G40- connector
  • Removing and installing ⇒ 1.2 Removing and installing ceramic glow pin plugs; carrying out resistor test
• 11 Valve
  • Do not rework. Only lapping in is permitted.
  • Mark installation position for re-installation.
  • Valve dimensions ⇒ 3.4 Inlet and exhaust valves
  • Checking valve guides ⇒ 3.4 Inlet and exhaust valves
• 12 Stud
• 13 Valve stem seal
• 14 Valve springs
• 15 Valve spring plate
• 16 Valve cotter
• 17 Cap
  • Renew

Retaining frame - specified torques and installation sequence

• Unscrew retaining frame securing bolts in sequence -20…1-.
• Tighten bolts in 2 stages in the sequence shown: