Replacement

2AZ-FE 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) Place the cylinder head on wooden blocks.

(d) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(e) Place the cylinder head on wooden blocks.

(f) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard diameter:
10.285 to 10.306 mm (0.4049 to 0.4058 in.)
If the bush bore diameter of the cylinder head is greater than 10.306 mm (0.4058 in.), machine the bush bore to the dimension of 10.335 to 10.365 mm (0.4068 to 0.4081 in.).
Standard valve guide bush diameter:

If the bushing bore diameter of the cylinder head is greater than 10.394 mm (0.4092 in.), replace the cylinder head.

(g) 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:
9.6 to 10.0 mm (0.378 to 0.394 in.)

(h) Using a sharp 5.5 mm reamer, ream the valve guide bush to the standard specified clearance between the valve guide bush and 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) Place the cylinder head on wooden blocks.

(d) Heat the cylinder head to 80 to 100°C (176 to 212°F).
(e) Place the cylinder head on wooden blocks.

If the bushing bore diameter of the cylinder head is greater than 10.394 mm (0.4092 in.), replace the cylinder head.

(h) Using a sharp 5.5 mm reamer, ream the valve guide bush to the standard specified clearance between the valve guide bush and valve stem.
Standard oil clearance:
0.030 to 0.065 mm (0.0012 to 0.0026 in.)
3. REPLACE STUD BOLT
NOTE: If the stud bolt is deformed or threads are damaged, replace it.

(a) Using E5 and E7 "TORX" socket wrenches, remove the 11 stud bolts.
(b) Using E5 and E7 "TORX" socket wrenches, install the 11 stud bolts.

4. REPLACE RING PIN
(a) Remove the 4 ring pins.

(b) Using a plastic-faced hammer, tap in 4 new ring pins to the specified protrusion height.
Protrusion height:
3.0 mm (0.12 in.)