Last Modified: 11-29-2007 1.6 A
Service Category: Engine/Hybrid System Section: Engine Mechanical
Model Year: 2008 Model: Sequoia Doc ID: RM000002WGD006X
Title: 2UZ-FE ENGINE MECHANICAL: CYLINDER HEAD GASKET: INSTALLATION (2008 Sequoia)

INSTALLATION

1. INSPECT CYLINDER HEAD SET BOLT 2UZ-FE ENGINE MECHANICAL: ENGINE UNIT: INSPECTION (2008 Sequoia)+

2. INSPECT CYLINDER HEAD LH (for Bank 1) 2UZ-FE ENGINE MECHANICAL: CYLINDER HEAD: INSPECTION (2008 Sequoia)+

3. INSTALL NO. 2 CYLINDER HEAD GASKET


(a) Clean the cylinder block and cylinder head with solvent.

(b) Place a new cylinder head gasket in position on the cylinder block.

HINT:

A mark is placed on the rear side of the cylinder head gasket to distinguish the LH and RH sides, a "2R" mark for the RH side and a "2L" mark for the LH side.

NOTICE:

Be careful of the installation direction.

4. INSTALL CYLINDER HEAD LH


(a) Check that the timing mark of the crankshaft timing pulley is in the position shown in the illustration, and that the piston is below the TDC of compression.

(b) Install the cylinder head with the exhaust manifold to the cylinder block.

NOTICE:

Ensure that no oil is on the mounting surface of the cylinder head.

(c) Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.

(d) Set the plate washer to the cylinder head bolt.


(e) Install and uniformly tighten the 10 cylinder head bolts and plate washers in the sequence shown in the illustration.

Torque: 40 N·m (408 kgf·cm, 30 ft·lbf)

If any one of the cylinder head bolts does not meet the torque specification, replace the cylinder head bolt.

HINT:

The cylinder head bolts are tightened in 3 progressive steps.

NOTICE:

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.


(f) Mark the cylinder head bolt head with paint as shown in the illustration.

(g) Further tighten the cylinder head bolts 90° and then an additional 90° as shown in the illustration.

(h) Check that the painted marks are now facing rearward.

5. INSTALL CYLINDER HEAD GASKET (for Bank 2)


(a) Clean the cylinder block and cylinder head with solvent.

(b) Place a new cylinder head gasket in position on the cylinder block.

HINT:

A mark is placed on the rear side of the cylinder head gasket to distinguish the LH and RH sides, a "2R" mark for the RH side and a "2L" mark for the LH side.

NOTICE:

Be careful of the installation direction.

6. INSTALL CYLINDER HEAD SUB-ASSEMBLY (for Bank 2)


(a) Check that the timing mark of the crankshaft timing pulley is in the position shown in the illustration, and that the piston is below the TDC of compression.

(b) Install the cylinder head with the exhaust manifold to the cylinder block.

NOTICE:

Ensure that no oil is on the mounting surface of the cylinder head.

(c) Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.

(d) Set the plate washer to the cylinder head bolt.


(e) Install and uniformly tighten the 10 cylinder head bolts and plate washers in the sequence shown in the illustration.

Torque: 40 N·m (408 kgf·cm, 30 ft·lbf)

If any one of the cylinder head bolts does not meet the torque specification, replace the cylinder head bolt.

HINT:

The cylinder head bolts are tightened in 3 progressive steps.

NOTICE:

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.


(f) Mark the cylinder head bolt head with paint as shown in the illustration.

(g) Further tighten the cylinder head bolts 90° and then an additional 90° as shown in the illustration.

(h) Check that the painted marks are now facing rearward.

7. INSTALL VALVE LIFTER

(a) Apply a light coat of engine oil to the valve lifters and shims.

(b) Install the valve lifters and shims to the cylinder head.

(c) Check that the valve lifter rotates smoothly by hand.

8. INSTALL REAR WATER BY-PASS JOINT



(a) Install 2 new gaskets and the water by-pass joint with the 4 nuts and connect the air hose.

Torque: 18 N·m (184 kgf·cm, 13 ft·lbf)

9. INSTALL WATER BY-PASS PIPE SUB-ASSEMBLY



(a) Apply soapy water to a new O-ring and install it to the water by-pass pipe.

(b) Push in the water by-pass pipe end into the pipe hole of the water pump.

(c) Install the water by-pass pipe with the bolt.

Torque: 18 N·m (184 kgf·cm, 13 ft·lbf)

10. INSTALL FRONT WATER BY-PASS JOINT



(a) Install 2 new gaskets and the water by-pass joint with the 4 nuts.

Torque: 18 N·m (184 kgf·cm, 13 ft·lbf)

11. INSTALL INLET WATER HOUSING 2UZ-FE COOLING: WATER PUMP: INSTALLATION (2008 Sequoia)+

12. INSTALL INTAKE MANIFOLD 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: INSTALLATION (2008 Sequoia)+

13. CONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY 2UZ-FE FUEL: FUEL INJECTOR: INSTALLATION (2008 Sequoia)+

14. CONNECT NO. 1 FUEL PIPE SUB-ASSEMBLY 2UZ-FE FUEL: FUEL INJECTOR: INSTALLATION (2008 Sequoia)+

15. INSTALL EFI FUEL PIPE CLAMP 2UZ-FE FUEL: FUEL INJECTOR: INSTALLATION (2008 Sequoia)+

16. INSTALL NO. 3 WATER BY-PASS PIPE 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: INSTALLATION (2008 Sequoia)+

17. REMOVE VACUUM HOSE ASSEMBLY 2UZ-FE INTAKE / EXHAUST: INTAKE MANIFOLD: INSTALLATION (2008 Sequoia)+

18. INSTALL CAMSHAFT

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

19. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY 2UZ-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION (2008 Sequoia)+

20. INSTALL FRONT EXHAUST PIPE ASSEMBLY 2UZ-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION (2008 Sequoia)+

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

22. INSTALL FRONT WIPER MOTOR AND LINK ASSEMBLY WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

23. INSTALL COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

24. INSTALL FRONT FENDER TO COWL SIDE SEAL RH WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

25. INSTALL FRONT FENDER TO COWL SIDE SEAL LH WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

26. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY RH WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

27. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY LH WIPER / WASHER: FRONT WIPER MOTOR: INSTALLATION (2008 Sequoia)+

28. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Torque: 5.4 N·m (55 kgf·cm, 48 in·lbf)

NOTICE:

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

29. INSPECT FOR OIL LEAK 2UZ-FE LUBRICATION: OIL AND OIL FILTER: REPLACEMENT (2008 Sequoia)+

30. INSPECT FOR COOLANT LEAK 2UZ-FE COOLING: COOLING SYSTEM: ON-VEHICLE INSPECTION (2008 Sequoia)+

31. INSPECT FOR FUEL LEAK 2UZ-FE FUEL: FUEL SYSTEM: ON-VEHICLE INSPECTION (2008 Sequoia)+

32. INSPECT EXHAUST GAS LEAK

33. CHECK ENGINE OIL LEVEL 2UZ-FE LUBRICATION: LUBRICATION SYSTEM: ON-VEHICLE INSPECTION (2008 Sequoia)+

34. INSPECT IGNITION TIMING 2UZ-FE ENGINE MECHANICAL: ENGINE: ON-VEHICLE INSPECTION (2008 Sequoia)+

35. INSPECT ENGINE IDLING SPEED 2UZ-FE ENGINE MECHANICAL: ENGINE: ON-VEHICLE INSPECTION (2008 Sequoia)+

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