Cylinder Head, Removing and Installing Overview

Cylinder head, removing and installing Overview
Compression, checking, Refer to Compression Check, Testing and Inspection

Note:
^ Depending on the version of the engine, the cylinder head cover is made out of steel sheet or light metal.
^ When installing an exchange cylinder head with fitted camshaft; the contact surfaces between the hydraulic lifter and the cam must be oiled BEFORE installing the cylinder head cover.
^ Do NOT remove the plastic packing pieces used to protect the open valves until immediately before installing the cylinder head.
^ If the cylinder head is replaced; also replace all engine coolant.
1. Cap
2. Gasket
^ Replace if damaged
3. Vent housing
^ Only cylinder head cover made out steel sheet
^ Turn to the right to remove
4. Gasket
^ Only cylinder head cover made out steel sheet
^ Always replace
5. Bracket
^ Only cylinder head cover made out steel sheet
6. 10 Nm (7 ft. lbs.)
7. To crankcase breather valve
8. 10 Nm (7 ft. lbs.)
9. Bracket
10. Oil seal
^ Always replace
11. Sealing plug
^ 15 Nm (11 ft. lbs.)
^ Always replace
12. Cylinder head bolt
^ Always replace
^ Observe sequence when loosening and tightening, Refer to Cylinder Head, Removing and Installing
13. Connection
^ Coolant hose connection diagram, Refer to Cooling System Diagrams
14. Oil seal
^ Replace if damaged
15. 20 Nm (15 ft. lbs.)
16. Lifting eye
17. Cylinder head gasket
^ Always replace
^ After replacing renew the complete coolant
^ Note installation position.
18. 15 Nm(11 ft. lbs.)
19. Camshaft drive belt guard, rear
20. Camshaft drive belt
^ Mark engine direction of rotation before removing
^ Check for wear
^ Do not kink
^ Removing, installing and tensioning, Refer to Timing Belt, Service and Repair
21. Cylinder head
^ Distortion, checking, Refer to Fig 1.
^ Sealing surface, reworking, Refer to Cylinder Head, Service and Repair, Valve Train, Servicing, See Fig 1
^ Removing and installing, Refer to Cylinder Head Removing and Installing
^ If replaced, also replace all engine coolant
22. Oil deflector
23. Cylinder head cover gasket
^ Replace if damaged
^ Before installing gasket, coat transition between camshaft bearing cap / cylinder head with D 454300 A2 sealant
24. Cylinder head cover
^ Light metal made
25. Cylinder head cover
^ Steel sheet made
26. Reinforcing strip
^ Only cylinder head cover made out steel sheet
27. Camshaft drive belt guard
^ Only cylinder head cover made out steel sheet





Fig. 1 Cylinder head distortion, checking
Special tools and equipment
^ Feeler gauges
^ Straight edge
- Maximum permissible distortion: 0.1 mm