Replacement
2AR-FXE ENGINE MECHANICAL: CYLINDER HEAD: REPLACEMENT
1. REPLACE INTAKE VALVE GUIDE BUSH
(a) Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).
(b) Place the cylinder head on wooden blocks.
(c) Using SST and a hammer, tap out the intake valve guide bush.
SST : 09201-01055
SST : 09950-70010
09951-07100
(d) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard bush bore diameter:
10.285 to 10.306 mm (0.405 to 0.406 in.)
If the bush bore diameter of the cylinder head is 10.356 mm (0.408 in.) or more, replace the cylinder head.
(e) Select a new guide bush (STD or O/S 0.05), and measure its diameter.
(f) Machine the bush bore of the cylinder head to the diameter of the selected guide bush.
Bush Bore Diameter:
Standard bush length:
41.3 to 41.7 mm (1.626 to 1.642 in.)
(g) Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).
(h) Using SST and a hammer, tap in the selected guide bush to the standard protrusion height.
SST : 09201-10000
09201-01050
SST : 09950-70010
09951-07100
Standard protrusion height:
14.8 to 15.2 mm (0.582 to 0.598 in.)
Text in Illustration
(i) Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard oil clearance between the guide bush and valve stem.
Standard oil clearance:
0.025 to 0.060 mm (0.000984 to 0.00236 in.)
2. REPLACE EXHAUST VALVE GUIDE BUSH
(a) Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).
(b) Place the cylinder head on wooden blocks.
(c) Using SST and a hammer, tap out the exhaust valve guide bush.
SST : 09201-01055
SST : 09950-70010
09951-07100
(d) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard bush bore diameter:
10.285 to 10.306 mm (0.405 to 0.406 in.)
If the bush bore diameter of the cylinder head is 10.356 mm (0.408 in.) or more, replace the cylinder head.
(e) Select a new guide bush (STD or O/S 0.05), and measure its diameter.
(f) Machine the bush bore of the cylinder head to the diameter of the selected guide bush.
Bush Bore Diameter:
Standard bush length:
46.8 to 47.2 mm (1.843 to 1.858 in.)
(g) Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).
(h) Using SST and a hammer, tap in the selected guide bush to the standard protrusion height.
SST : 09201-10000
09201-01050
SST : 09950-70010
09951-07100
Standard protrusion height:
14.2 to 14.6 mm (0.559 to 0.575 in.)
Text in Illustration
(i) Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard oil clearance between the guide bush and valve stem.
Standard oil clearance:
0.030 to 0.065 mm (0.00118 to 0.00256 in.)
3. REPLACE RING PIN
NOTICE:
It is not necessary to remove the ring pin unless it is being replaced.
(a) Remove the ring pins.
(b) Using a plastic-faced hammer, tap in 2 new ring pins to the cylinder head.
Standard protrusion height:
6.5 to 7.5 mm (0.256 to 0.295 in.)