PROCEDURE
REPLACE INTAKE VALVE GUIDE BUSH
Gradually heat the cylinder head sub-assembly to approximately 80 to 100°C (176 to 212°F).
Place the cylinder head sub-assembly on wooden blocks.
Using SST and a hammer, tap out the intake valve guide bush.
Using a caliper gauge, measure the bush bore diameter of the cylinder head sub-assembly.
If the bush bore diameter of the cylinder head sub-assembly is more than 11.006 mm (0.433 in.), machine the bush bore diameter to between 11.035 and 11.056 mm (0.434 and 0.435 in.).
If the bush bore diameter of the cylinder head sub-assembly is more than 11.056 mm (0.435 in.), replace the cylinder head sub-assembly.
Select a new intake valve guide bush (STD or O/S 0.05).
Guide Bush | ||||||
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Gradually heat the cylinder head sub-assembly to approximately 80 to 100°C (176 to 212°F).
Place the cylinder head sub-assembly on wooden blocks.
Using SST and a hammer, tap in a new intake valve guide bush to the specified protrusion height.
Standard Protrusion Height (A) |
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9.0 to 9.4 mm (0.354 to 0.370 in.) |
Using a sharp 6.0 mm reamer, ream the intake valve guide bush to obtain the standard specified clearance between the intake valve guide bush and intake valve stem.
*1 | Sharp 6.0 mm Reamer |
REPLACE EXHAUST VALVE GUIDE BUSH
Gradually heat the cylinder head sub-assembly to approximately 80 to 100°C (176 to 212°F).
Place the cylinder head sub-assembly on wooden blocks.
Using SST and a hammer, tap out the exhaust valve guide bush.
Using a caliper gauge, measure the bush bore diameter of the cylinder head sub-assembly.
If the bush bore diameter of the cylinder head sub-assembly is more than 11.006 mm (0.433 in.), machine the bush bore diameter to between 11.035 and 11.056 mm (0.434 and 0.435 in.).
If the bush bore diameter of the cylinder head sub-assembly is more than 11.056 mm (0.435 in.), replace the cylinder head sub-assembly.
Select a new exhaust valve guide bush (STD or O/S 0.05).
Guide Bush | ||||||
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Gradually heat the cylinder head sub-assembly to approximately 80 to 100°C (176 to 212°F).
Place the cylinder head sub-assembly on wooden blocks.
Using SST and a hammer, tap in a new exhaust valve guide bush to the specified protrusion height.
Standard Protrusion Height (A) |
---|
9.0 to 9.4 mm (0.354 to 0.370 in.) |
Using a sharp 6.0 mm reamer, ream the exhaust valve guide bush to obtain the standard specified clearance between the exhaust valve guide bush and exhaust valve stem.
*1 | Sharp 6.0 mm Reamer |
REPLACE CYLINDER HEAD RING PIN
It is not necessary to remove a cylinder head ring pin unless it is being replaced.
Remove the cylinder head ring pin.
Using a plastic hammer, tap in a new cylinder head ring pin until the pin stops.
*A | Intake Manifold Side | *B | Cylinder Head Cover Side |
*a | Pin A | *b | Pin B |
Standard Protrusion | ||||||
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REPLACE NO. 1 STRAIGHT SCREW PLUG WITH HEAD
Using a 6 mm hexagon wrench, remove the 4 No.1 straight screw plug with heads.
Apply adhesive to 4 new No. 1 straight screw plug with heads.
Adhesive |
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Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Using a 6 mm hexagon wrench, install the 4 No. 1 straight screw plug with heads.
REPLACE CYLINDER HEAD STUD BOLT
If a cylinder head stud bolt is deformed or the threads are damaged, replace it.
Remove the cylinder head stud bolts.
Using an E8 "TORX" socket wrench, install new cylinder head stud bolts (A) and (C).
*A | Cylinder Head Cover Side | *B | Intake Manifold Side |
*C | Exhaust Manifold Side | - | - |
Install new cylinder head stud bolt (B).