Last Modified: 4-30-2014 6.6 A Doc ID: RM000000SMS007X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: 2UZ-FE ENGINE MECHANICAL: CYLINDER HEAD: REPLACEMENT; 2006 MY LX470 [05/2005 -        ]

REPLACEMENT

1. REMOVE INTAKE VALVE GUIDE BUSH

(a) Gradually heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

(b) Using SST and a hammer, tap out the guide bush.

SST: 09201-10000

SST: 09950-70010

09951-07100

2. INSTALL INTAKE VALVE GUIDE BUSH

(a) Using a caliper gauge, measure the bush bore diameter of the cylinder head.

(b) Select a new guide bush (STD or O/S 0.05).

Standard bush bore diameter:

Bush Size

Specified Condition

Use STD

10.285 to 10.306 mm (0.4049 to 0.4057 in.)

Use O/S 0.05

10.335 to 10.356 mm (0.4069 to 0.4077 in.)

HINT:

  • If the bush bore diameter of the cylinder head is greater than 10.306 mm (0.4057 in.), machine the bush bore diameter to between 10.335 and 10.356 mm (0.4068 to 0.4077 in.).
  • If the bush bore diameter of the cylinder head is greater than 10.356 mm (0.4077 in.), replace the cylinder head.

HINT:

Different bushes are used for the intake and exhaust.

Standard intake bush length:

34.5 mm (1.358 in.)

(c) Gradually heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

(d) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.

SST: 09201-10000

SST: 09950-70010

09951-07100

Standard protrusion height (H):

9.2 to 9.8 mm (0.362 to 0.386 in.)

(e) Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and valve stem.

3. REMOVE EXHAUST VALVE GUIDE BUSH

(a) Gradually heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

(b) Using SST and a hammer, tap out the guide bush.

SST: 09201-10000

SST: 09950-70010

09951-07100

4. INSTALL EXHAUST VALVE GUIDE BUSH

(a) Using a caliper gauge, measure the bush bore diameter of the cylinder head.

(b) Select a new guide bush (STD or O/S 0.05).

Standard bush bore diameter:

Bush Size

Specified Condition

Use STD

10.285 to 10.306 mm (0.4049 to 0.4057 in.)

Use O/S 0.05

10.335 to 10.356 mm (0.4069 to 0.4077 in.)

HINT:

  • If the bush bore diameter of the cylinder head is greater than 10.306 mm (0.4057 in.), machine the bush bore diameter to between 10.335 and 10.356 mm (0.4068 to 0.4077 in.).
  • If the bush bore diameter of the cylinder head is greater than 10.356 mm (0.4077 in.), replace the cylinder head.

HINT:

Different bushes are used for the intake and exhaust.

Standard exhaust bush length:

40.5 mm (1.594 in.)

(c) Gradually heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

(d) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.

SST: 09201-01055

SST: 09950-70010

09951-07100

Standard protrusion height (H):

8.2 to 8.8 mm (0.323 to 0.346 in.)

(e) Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and valve stem.