Remove
- 1. Remove camshafts
- 2. Remove spark plugs with KM-194-E
- 3. Raise vehicle
- 4. Remove right engine splash guard (2) • Unscrew 4x bolts (1) • Remove 2x body-bound rivets (3)
- 5. Make alignment mark • On crankshaft belt pulley (arrow)
Note. 180° offset in respect of the marking, ignition TDC cylinder no. 1
- 6. Prepare automated valve spring lever MKM-6086 • Adjust supports MKM-6086-6 (2) – Adjust support heads (1) centrally in respect of the support feet (2) and tighten • Complete lever arm MKM-6086-7 – With joint MKM-6086-8 and removal head MKM-6086-10
- 7. Complete assembly kit MKM-6086-200 • Insert thrust piece MKM-6086-200-10 (3)
Note. Note manufacturer's provisions
- 8. Attach automatic valve spring lever MKM-6086 • Attach supports MKM-6086-6 (1) – Insert installation shaft in supports – Tighten 4x bolts • Install lever arm MKM-6086-7 (2) • Secure installation shaft – Tighten 2 bolts
Note. Align assembly shaft so that it is centred over spark plug bore
Note. Removal head must point towards the intake side
- 9. Install compressed air adapter • Screw into spark plug thread, cylinder no. 1 • Apply compressed air to 1st cylinder
- 10. Remove cylinder no.1 intake valve springs • 2 off • Carefully push valve springs downward with lever arm (1) • Remove valve cotters, valve heads, valve springs
Note. Removal head (2) must be positioned vertically above valve stem
Important. Observe correct assignment
Note. Do not use magnetic tools
- 11. Replace valve stem seals • 2 off • Remove with KM-840 • Attach new valve stem seal to valve stem • Drive in as far as the stop with KM-958
- 12. Install intake valve springs, cylinder no.1 • Insert valve springs and valve heads • Insert valve cotters into assembly head (1) – Push plastic clamping sleeve (2) towards lever arm mounting – Insert valve cotters – Slide plastic clamping sleeve in direction of valve (arrow)
Important. Insert valve cotters with tapered end towards valve
- 13. Install valve cotters • Attach assembly head (1) to lever arm • Carefully push valve springs downwards with lever arm (arrow) •
Important. Assembly head must be positioned vertically above valve stem. Valve cotters (2) must engage audibly
Important. Do not undertake a 2nd attempt without checking that both valve cotters are seated in the assembly head. Check seat of valve cotters. Ensure that compressed air is being applied
- 14. Transfer lever arm • Remove lever arm • Detach assembly head • Attach removal head • Install lever arm
Note. Removal head must point towards the exhaust side
- 15. Remove exhaust valve springs, cylinder no.1 • 2 off • Carefully push valve springs downwards with lever arm • Remove valve cotters, valve heads, valve springs
Note. Removal head must be positioned vertically over the valve stem
Important. Observe correct assignment
Note. Do not use magnetic tools
- 16. Replace valve stem seals • 2 off • Remove with KM-840 • Attach new valve stem seal to valve stem • Drive in as far as the stop with KM-958
- 17. Install exhaust valve springs, cylinder no.1 • Insert valve springs and valve heads • Insert valve cotters into assembly head (1) – Push plastic clamping sleeve (2) towards lever arm mounting – Insert valve cotters – Slide plastic clamping sleeve in direction of valve (arrow)
Important. Insert valve cotters with tapered end towards valve
- 18. Install valve cotters • Attach assembly head to lever arm • Carefully push valve springs downwards with lever arm •
Important. Assembly head must stand vertically above valve stem. Valve cotters must engage audibly
Important. Do not undertake a 2nd attempt without checking that both valve cotters are seated in the assembly head. Check seat of valve cotters. Ensure that compressed air is being applied
- 19. Transfer compressed air adapter • Interrupt compressed air feed • Unscrew from spark plug thread, cylinder no. 1 • Screw into spark plug thread, cylinder no. 4 • Apply compressed air to cylinder no. 4
- 20. Transfer lever arm • Remove lever arm • Detach assembly head • Attach removal head • Install lever arm
- 21. Replace valve stem seals, cylinder no. 4 • 4 off
- 22. Interrupt compressed air feed
- 23. Remove crankshaft lock KM-952
- 24. Adjust ignition TDC of cylinder no. 3 • Pull timing chain upwards • Turn crankshaft evenly (180°)
Note. Positioning mark on crankshaft belt pulley must align with lug on timing case
- 25. Transfer compressed air adapter • Interrupt compressed air feed • Unscrew from spark plug thread, cylinder no. 4 • Screw into spark plug thread, cylinder no. 2 • Apply compressed air to 2nd cylinder
- 26. Replace valve stem seals, cylinder no. 2 • 4 off
- 27. Transfer compressed air adapter • Interrupt compressed air feed • Unscrew from spark plug thread, cylinder no. 2 • Screw into spark plug thread, cylinder no. 3 • Apply compressed air to 3rd cylinder
- 28. Replace valve stem seals, cylinder no. 3 • 4 off
- 29. Interrupt compressed air feed
- 30. Detach automatic valve spring lever
- 31. Remove compressed air adapter
- 32. Release crankshaft • Select neutral gear • Release handbrake
- 33. Raise vehicle
- 34. Lock crankshaft • Pull timing chain upwards • Turn crankshaft evenly until KM-952 engages • Insert KM-952
- 35. Lower vehicle
Install
- 36. Install spark plugs using KM-194-E 25 Nm
- 37. Inspect components • Camshafts, camshaft bearing cap, cylinder head, roller cam follower, hydraulic valve lifter
- 38. Install hydraulic valve lifter, roller cam follower and camshafts