PROCEDURE
INSTALL SPARK PLUG TUBE
Tech Tips
When replacing the cylinder head with a new one, perform the following procedure.
| *a | Protrusion Height |
| *b | Mark |
Using paint, mark the standard position from the edge.
| Standard protrusion height |
|---|
| 88.7 to 90.2 mm (3.492 to 3.551 in.) |
| *a | Adhesive |
Apply adhesive to the spark plug tube where it will be pressed into the cylinder head.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1386D or equivalent |
Using a press and wooden block, install the spark plug tube to the required protrusion height.
| *1 | Wooden Block |
| *a | Press |
| *b | Mark |
| *c | Protrusion Height |
| Standard protrusion height |
|---|
| 88.7 to 90.2 mm (3.492 to 3.551 in.) |
Note
Install the spark plug tube within 3 minutes after applying adhesive.
Do not start the engine within 1 hour after installation.
Do not deform the spark plug tube.
Be careful not to drip the adhesive.
INSTALL VALVE SPRING SEAT
Install the valve spring seats to the cylinder head.
INSTALL VALVE STEM OIL SEAL
| *a | Intake Side |
| *b | Exhaust Side |
| *c | Gray |
| *d | Black |
Apply a light coat of engine oil to new oil seals.
Note
Pay close attention when installing the intake and exhaust oil seals. Installing the intake oil seal into the exhaust side or installing the exhaust oil seal to the intake side may cause installation problems later.
Tech Tips
The intake valve oil seal is gray and the exhaust valve oil seal is black.
| *a | Correct |
| *b | Incorrect |
Using SST, push in the oil seals.
Note
Failure to use SST may cause the oil seal to be damaged or improperly seated.
INSTALL INTAKE VALVE
Tech Tips
Type A and Type B can be distinguished by the shape of the compression spring.
| Type | Compression Spring Shape |
|---|---|
| A | Straight |
| B | Taper |
| *A | Type A |
| *B | Type B |
| *1 | No. 1 Valve Rocker Arm Sub-assembly |
| *2 | Valve Spring Retainer |
| *3 | Compression Spring |
| *4 | Valve Lash Adjuster Assembly |
Type A:
| *a | 30 mm (1.18 in.) or more |
Sufficiently apply engine oil to the tip area of the intake valve shown in the illustration.
Install the intake valve, compression spring and valve spring retainer to the cylinder head sub-assembly.
Note
Install the same parts to their original positions.
| *1 | Wooden Block |
Using SST and wooden blocks, compress the compression spring and install the 2 valve spring retainer locks.
Using a plastic hammer, lightly tap the intake valve stem tip to ensure a proper fit.
Note
Be careful not to damage the intake valve stem tip.
Be careful not to tap the valve spring retainer.
Type B:
| *a | 30 mm (1.18 in.) or more |
Sufficiently apply engine oil to the tip area of the intake valve shown in the illustration.
| *1 | Compression Spring |
| *2 | Valve Spring Retainer |
| *3 | Cylinder Head Sub-assembly |
| *4 | Upper Side |
Install the intake valve, compression spring and valve spring retainer to the cylinder head sub-assembly.
Note
Install the compression spring with its taper side facing upward (towards the valve spring retainer)
Install the same parts to their original positions.
| *1 | Wooden Block |
Using SST and wooden blocks, compress the compression spring and install the 2 valve spring retainer locks.
Using a plastic hammer, lightly tap the intake valve stem tip to ensure a proper fit.
Note
Be careful not to damage the intake valve stem tip.
Be careful not to tap the valve spring retainer.
INSTALL EXHAUST VALVE
Tech Tips
Type A and Type B can be distinguished by the shape of the compression spring.
| Type | Compression Spring Shape |
|---|---|
| A | Straight |
| B | Taper |
| *A | Type A |
| *B | Type B |
| *1 | No. 1 Valve Rocker Arm Sub-assembly |
| *2 | Valve Spring Retainer |
| *3 | Compression Spring |
| *4 | Valve Lash Adjuster Assembly |
Type A:
| *a | 30 mm (1.18 in.) or more |
Sufficiently apply engine oil to the tip area of the exhaust valve shown in the illustration.
Install the exhaust valve, compression spring and valve spring retainer to the cylinder head sub-assembly.
Note
Install the same parts to their original positions.
| *1 | Wooden Block |
Using SST and wooden blocks, compress the compression spring and install the 2 valve spring retainer locks.
Using a plastic hammer, lightly tap the exhaust valve stem tip to ensure a proper fit.
Note
Be careful not to damage the exhaust valve stem tip.
Be careful not to tap the valve spring retainer.
Type B:
| *a | 30 mm (1.18 in.) or more |
Sufficiently apply engine oil to the tip area of the exhaust valve shown in the illustration.
| *1 | Compression Spring |
| *2 | Valve Spring Retainer |
| *3 | Cylinder Head Sub-assembly |
| *4 | Upper Side |
Install the exhaust valve, compression spring and valve spring retainer to the cylinder head sub-assembly.
Note
Install the compression spring with its taper side facing upward (towards the valve spring retainer)
Install the same parts to their original positions.
| *1 | Wooden Block |
Using SST and wooden blocks, compress the compression spring and install the 2 valve spring retainer locks.
Using a plastic hammer, lightly tap the exhaust valve stem tip to ensure a proper fit.
Note
Be careful not to damage the exhaust valve stem tip.
Be careful not to tap the valve spring retainer.
INSTALL VALVE STEM CAP
Apply a light coat of engine oil to the valve stem caps.
Install the valve stem caps to the cylinder head.