Cylinder head (ADR)
- 1. Camshaft sprocket bolt
- 2. Camshaft sprocket
- 3. Oil seal
- 4. Head
- 5. Valve stem seal
- 6. Valve spring
- 7. Spring seat
- 8. Taper bushings
- 9. Hydraulic pusher
- 10. Inlet camshaft
- 11. Intake camshaft bearing cap
- 12. Front combination cover
- 13. Exhaust camshaft
- 14. Bearing cap exhaust camshaft
- 15. Cover bolt
- 16. Chain
- 17. Automatic shaft adjuster
- 18. Rubber gasket
- 19. Semicircular sealing sleeve
- 20. Exhaust valve
- 21. Inlet valve
- 22. Oil seal
- 23. Hall sensor ring
- 24. Conical washer
- 25. Bolt
- 26. Hall sensor
- 27. Sensor bolt
Cylinder head (AAE, ABK, AAD, 1Z, AHU)
- 1. Camshaft bearing cap
- 2. Nut
- 3. Camshaft
- 4. Segment key
- 5. Camshaft sprocket bolt
- 6. Hydraulic pusher
- 7. Spring plate
- 8. Valve springs
- 9. Valve stem gasket
- 10. Spring seat
- 11. Valve guides
- 12. Valves
- 13. Plug
- 14. Camshaft oil seal
- 15. Cylinder head
Cylinder head (ACE)
- 1. Camshaft sprocket bolt
- 2. Camshaft bearing cap nut
- 3. Bearing cap
- 4. Chain
- 5. Camshaft
- 6. Hydraulic pusher
- 7. Taper bushings
- 8. Spring plate
- 9. Valve spring
- 10. Valve stem seal
- 11. Spring seat
- 12. Guide bush
- 13. Camshaft oil seal
- 14. Cylinder head
- 15. Valves
Cylinder head (AAR, AAN)
- 1. Camshaft bearing cap
- 2. Nut
- 3. Camshaft
- 4. Oil seal
- 5. Hydraulic pusher
- 6. Taper bushings
- 7. Spring plate
- 8. Valve springs
- 9. Valve stem seal
- 10. Valve spring seat
- 11. Valve guide
- 12. Guide bush with stuffing box
- 13. Cylinder head
- 14. Valves
- 15. Minimum head height
Cylinder head (AAS)
- 1. Nut
- 2. Pin
- 3. Bearing caps
- 4. Camshaft
- 5. Hydraulic pusher
- 6. Taper bushings
- 7. Spring plate
- 8. External spring
- 10. Spring seat
- 11. Valve stem seal
- 12. Guide bush
- 13. Rear oil seal
- 14. Injector
- 15. Thermal shield
- 16. Candle
- 17. Cylinder head
- 18. Valves
- 19. Front oil seal
Bulkhead
1. Remove the cylinder head.
2. Unscrew a branch pipe of a cooling liquid.
3. Remove the gasket.
4. Unscrew the coolant sensor and oil pressure switch.
5. Place parts in separate labeled bags or boxes.
ADR engines
5. Unscrew the Hall sensor, remove the washer and the sensor plate.
6. Using special tool 3366, lock the automatic camshaft adjuster.
7. Clean the chain and sprockets.
8. Loosen the camshaft bearing cap bolts (see fig. cylinder head (ADR)).
9. Unscrew the bolts of the automatic shaft adjuster.
10. Remove both shafts along with the governor and chain.
11. Remove the camshaft seals.
Engines AAE, ABK, AAD, 1Z, AHU
12. Loosen bearing cap nuts N5,1 and 3 and then N2 and 4 (see fig. cylinder head (AAE, ABK, AAD, 1Z, AHU)).
ACE engines
13. Remove the ignition distributor.
14. Remove inlet shaft bearing cap nuts N5 and 7, then N6 and 8. Remove exhaust shaft bearing cap nuts N1 and 3, then N2 and 4. Remove all caps (see fig. cylinder head (ACE)).
15. Remove the shafts along with the chain. Remove the exhaust valve shaft seal.
AAR, AAN, AAS engines
16. Remove the ignition distributor (AAS).
17. Loosen bearing cap nuts N2 and 4 and then N1 and 3 (see fig. Cylinder head (AAR, AAN), cylinder head (AAS)). Remove covers.
ABP, AAT, AEL engines
18. Unscrew the nuts of the bearing caps N2 and 4, and then the caps N1 and 3.
19. Remove bearing caps.
20. Remove the camshaft seals.
21. Remove the camshaft.
All types of engines
22. Remove the hydraulic tappets and note their correct position.
23. Compress the valve springs with a special tool and remove the taper bushings.
24. Remove spring plates, springs and their seats. Use a special tool.
25. Remove the valve stem seals.
26. Take out the valves.
Cleaning
Thoroughly clean the surfaces and holes of the head. Clean valves and tappets.
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