Replacement

1NZ-FE ENGINE MECHANICAL: CYLINDER HEAD: REPLACEMENT

REPLACEMENT

1. REMOVE 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 bushing.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
2. REMOVE 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 bushing.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
3. INSTALL INTAKE VALVE GUIDE BUSH





(a) Using a caliper gauge, measure the bushing bore diameter of the cylinder head.
Inside Diameter:
9.685 to 9.706 mm (0.3813 to 0.3821 in.)
If the bushing bore diameter of the cylinder head is greater than 9.706 mm (0.3821 in.), machine the bushing bore to the dimension of 9.735 to 9.755 mm (0.3833 to 0.3841 in.).






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





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





(d) Using a sharp 5 mm reamer, ream the guide bushing to obtain the standard oil clearance between the guide bushing and valve stem.
Standard oil clearance:
0.025 to 0.060 mm (0.0010 to 0.0024 in.)
4. INSTALL EXHAUST VALVE GUIDE BUSH
(a) Using a caliper gauge, measure the bushing bore diameter of the cylinder head.
Inside Diameter:
9.685 to 9.706 mm (0.3813 to 0.3821 in.)
If the bushing bore diameter of the cylinder head is greater than 9.706 mm (0.3821 in.), machine the bushing bore to the dimension of 9.735 to 9.755 mm (0.3833 to 0.3841 in.).






(b) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(c) Using SST and a hammer, tap a new guide bushing in to the specified protrusion height.
SST: 09201-10000
09201-01050
SST: 09950-70010
09951-07100
Protrusion height:
9.0 to 9.4 mm (0.354 to 0.370 in.)
(d) Using a sharp 5 mm reamer, ream the guide bushing to obtain the standard oil clearance between the guide bushing and valve stem.
Standard oil clearance:
0.030 to 0.065 mm (0.0012 to 0.0026 in.)