Replacement (Valves)

1NZ-FXE ENGINE MECHANICAL: CYLINDER HEAD: REPLACEMENT

REPLACEMENT

1. REPLACE INTAKE VALVE GUIDE BUSH

(a) Heat the cylinder head to 80 to 100°C (176 to 212°F).

(b) Using SST and a hammer, tap out the guide bush.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100

(e) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
Standard protrusion height:
9.0 to 9.4 mm (0.354 to 0.370 in.)

(f) Using a sharp 5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and the valve stem.
Standard oil clearance:
0.025 to 0.060 mm (0.0010 to 0.0024 in.)
2. REPLACE EXHAUST VALVE GUIDE BUSH
(a) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(b) Using SST and a hammer, tap out the guide bush.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
(c) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard bore diameter:

If the bush bore diameter of the cylinder head is greater than 9.706 mm (0.3821 in.), machine the bush bore to a dimension of 9.735 to 9.755 mm (0.3833 to 0.3841 in.).
If the bush bore diameter of the cylinder head is greater than 9.756 mm (0.3841 in.), replace the cylinder head.
(d) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(e) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
Standard protrusion height:
9.0 to 9.4 mm (0.354 to 0.370 in.)
(f) Using a sharp 5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and valve stem.
Standard oil clearance:
0.030 to 0.065 mm (0.0012 to 0.0026 in.)