Replacement
2AR-FE 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 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 between 10.285 and 10.306 mm (0.405 and 0.406 in.), proceed to the next step.
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 (0.00098 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 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 between 10.285 and 10.306 mm (0.405 and 0.406 in.), proceed to the next step.
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 SPARK PLUG TUBE
HINT
When using a new cylinder head, the spark plug tubes must be replaced.
(a) Remove the spark plug tube.
(b) Apply adhesive onto the shaded area of a new spark plug tube.
Adhesive:
Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent.
Standard application width:
2.0 mm (0.0787 in.)
Distance:
6.0 mm (0.236 in.)
Text in Illustration
NOTICE:
* Install the spark plug tube within 3 minutes after applying adhesive.
* Be careful not to deform the spark plug tube.
* Be careful not to expose the seal to coolant for at least 1 hour after installing it.
(c) Using a wooden block and hammer, tap in the spark plug tube to the specified protrusion height.
Standard protrusion height:
112 mm (4.41 in.)
Text in Illustration
NOTICE:
To avoid tapping in the spark plug tube too far, measure the protrusion height while tapping it.
4. 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 new ring pins to the cylinder head.
Standard protrusion height:
6.5 to 7.5 mm (0.256 to 0.295 in.)
Text in Illustration
