CYLINDER HEAD REPLACEMENT
PROCEDURE
REPLACE INTAKE VALVE GUIDE BUSH
Heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on wooden blocks.
-
Using SST and a hammer, tap out the guide bush.
09201-10000
09201-01050
09950-70010
09951-07100
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.)
Select New Guide Bush
Bush Size
Bush Diameter
STD
10.333 to 10.344 mm (0.4068 to 0.4072 in.)
O/S 0.05
10.383 to 10.394 mm (0.4088 to 0.4092 in.)
If the bush bore diameter of the cylinder head is more than 10.306 mm (0.406 in.), machine the bush bore to a diameter of 10.335 to 10.356 mm (0.407 to 0.408 in.) in order to install an O/S 0.05 valve guide bush. If the bush bore diameter of the cylinder head is more than 10.356 mm (0.408 in.), replace the cylinder head.
Heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on wooden blocks.
-
*1
Protrusion Height
Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
09201-10000
09201-01050
09950-70010
09951-07100
Protrusion height
9.9 to 10.3 mm (0.390 to 0.406 in.)
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Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard clearance between the guide bush and valve stem.
Standard oil clearance
0.025 to 0.060 mm (0.000984 to 0.00236 in.)
REPLACE EXHAUST VALVE GUIDE BUSH
Heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on wooden blocks.
-
Using SST and a hammer, tap out the guide bush.
09201-10000
09201-01050
09950-70010
09951-07100
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.)
Select New Guide Bush
Bush Size
Bush Diameter
STD
10.333 to 10.344 mm (0.4068 to 0.4072 in.)
O/S 0.05
10.383 to 10.394 mm (0.4088 to 0.4092 in.)
If the bush bore diameter of the cylinder head is more than 10.306 mm (0.406 in.), machine the bush bore to a diameter of 10.335 to 10.356 mm (0.407 to 0.408 in.) in order to install an O/S 0.05 valve guide bush. If the bush bore diameter of the cylinder head is more than 10.356 mm (0.408 in.), replace the cylinder head.
Heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on wooden blocks.
-
*1
Protrusion Height
Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
09201-10000
09201-01050
09950-70010
09951-07100
Protrusion height
11.15 to 11.55 mm (0.439 to 0.455 in.)
-
Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard clearance between the guide bush and valve stem.
Standard oil clearance
0.030 to 0.065 mm (0.00118 to 0.00256 in.)
REPLACE SPARK PLUG TUBE
Note:When using a new cylinder head, the spark plug tubes must be replaced.
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*1
Adhesive
*2
Distance
*3
Seal Diameter
Apply adhesive onto the shaded area of a new spark plug tube.
Adhesive
Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent.
Standard seal diameter
1.0 to 3.0 mm (0.0394 to 0.118 in.)
Distance from end of tube
1.0 to 7.0 mm (0.0394 to 0.294 in.)
Note: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 the tube.
-
*1
Protrusion Height
Using a wooden block and hammer, tap in the spark plug tube to the specified protrusion height.
Standard protrusion height
122 mm (4.80 in.)
Note:To avoid tapping in the spark plug tube too far, measure the protrusion height while tapping it.
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REPLACE RING PIN
Note:It is not necessary to remove a ring pin unless it is being replaced.
Remove the ring pins.
-
*1
Protrusion Height
*2
Width
*3
Height
Using a plastic-faced hammer, tap in a new ring pin to the specified protrusion height.
Standard Ring Pin
Height
Width
Protrusion
11.7 to 12.3 mm (0.461 to 0.484 in.)
12.0 mm (0.472 in.)
6.5 to 7.5 mm (0.256 to 0.295 in.)