Last Modified: 11-29-2007 1.6 A
Service Category: Engine/Hybrid System Section: Engine Mechanical
Model Year: 2008 Model: Sequoia Doc ID: RM000002WGF006X
Title: 2UZ-FE ENGINE MECHANICAL: CYLINDER HEAD GASKET: REMOVAL (2008 Sequoia)

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION (2008 Sequoia) .

2. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

3. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

4. REMOVE FRONT FENDER TO COWL SIDE SEAL RH WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

5. REMOVE FRONT FENDER TO COWL SIDE SEAL LH WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

6. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

7. REMOVE FRONT WIPER MOTOR AND LINK ASSEMBLY WIPER / WASHER: FRONT WIPER MOTOR: REMOVAL (2008 Sequoia)+

8. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: REMOVAL (2008 Sequoia)+

9. REMOVE NO. 1 ENGINE UNDER COVER 2UZ-FE LUBRICATION: OIL AND OIL FILTER: REPLACEMENT (2008 Sequoia)+

10. DRAIN ENGINE COOLANT 2UZ-FE COOLING: COOLANT: REPLACEMENT (2008 Sequoia)+

11. REMOVE FRONT EXHAUST PIPE ASSEMBLY 2UZ-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: REMOVAL (2008 Sequoia)+

12. REMOVE FRONT NO. 2 EXHAUST PIPE ASSEMBLY 2UZ-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: REMOVAL (2008 Sequoia)+

13. REMOVE CAMSHAFT

(a) Remove the camshaft 2UZ-FE ENGINE MECHANICAL: CAMSHAFT: REMOVAL (2008 Sequoia) .

14. DISCONNECT VACUUM HOSE ASSEMBLY 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: REMOVAL (2008 Sequoia)+

15. REMOVE NO. 3 WATER BY-PASS PIPE 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: REMOVAL (2008 Sequoia)+

16. REMOVE EFI FUEL PIPE CLAMP 2UZ-FE FUEL: FUEL INJECTOR: REMOVAL (2008 Sequoia)+

17. DISCONNECT NO. 1 FUEL PIPE SUB-ASSEMBLY 2UZ-FE FUEL: FUEL INJECTOR: REMOVAL (2008 Sequoia)+

18. DISCONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY 2UZ-FE FUEL: FUEL INJECTOR: REMOVAL (2008 Sequoia)+

19. REMOVE INTAKE MANIFOLD 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: REMOVAL (2008 Sequoia)+

20. REMOVE INLET WATER HOUSING 2UZ-FE COOLING: WATER PUMP: REMOVAL (2008 Sequoia)+

21. REMOVE FRONT WATER BY-PASS JOINT



(a) Remove the 4 nuts, water by-pass joint and 2 gaskets.

22. REMOVE WATER BY-PASS PIPE SUB-ASSEMBLY



(a) Remove the bolt and pull out the water by-pass pipe sub-assembly.

(b) Remove the O-ring from the water by-pass pipe sub-assembly.

23. REMOVE REAR WATER BY-PASS JOINT



(a) Disconnect the air hose and remove the 4 nuts, water by-pass joint and 2 gaskets.

24. REMOVE VALVE LIFTER

(a) Remove the valve lifters and shims from the cylinder head.

HINT:

Arrange the removed parts in the correct order.

25. REMOVE CYLINDER HEAD LH (for Bank 1)

(a) Uniformly loosen the 10 cylinder head bolts on the cylinder head in several passes, in the sequence shown in the illustration.

(b) Remove the bolts and plate washers.

NOTICE:

  • Cylinder head warpage or cracking could result from removing bolts in the incorrect order.
  • Do not drop the plate washer for the cylinder head bolt into portion A of the cylinder head. If dropped into portion A, the plate washer will pass through the cylinder head and cylinder block into the oil pan.


(c) Remove the cylinder head by prying between the cylinder block and cylinder head with a screwdriver.

NOTICE:

  • Be careful not to damage the contact surfaces of the cylinder head and cylinder block.
  • The cylinder head should not be tilted so as to secure the valve lifter. If the cylinder head is tilted, remove the valve lifter and check that the adjusting shim is set correctly.

26. REMOVE NO. 2 CYLINDER HEAD GASKET

27. REMOVE CYLINDER HEAD SUB-ASSEMBLY (for Bank 2)

(a) Uniformly loosen the 10 cylinder head bolts on the cylinder head in several passes, in the sequence shown in the illustration.

(b) Remove the bolts and plate washers.

NOTICE:

  • Cylinder head warpage or cracking could result from removing bolts in the incorrect order.
  • Do not drop the plate washer for the cylinder head bolt into portion A of the cylinder head. If dropped into portion A, the plate washer will pass through the cylinder head and cylinder block into the oil pan.


(c) Remove the cylinder head by prying between the cylinder block and cylinder head with a screwdriver.

NOTICE:

  • Be careful not to damage the contact surfaces of the cylinder head and cylinder block.
  • The cylinder head should not be tilted so as to secure the valve lifter. If the cylinder head is tilted, remove the valve lifter and check that the adjusting shim is set correctly.

28. REMOVE CYLINDER HEAD GASKET