Cylinder Head Replacement

Heat the cylinder head to between 80 and 100°C (176 and 212°F).

Place the cylinder head on wooden blocks.

Using SST and a hammer, tap out the intake valve guide bushes.

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

Using a caliper gauge, measure the valve guide bush bore diameter of the cylinder head.

Standard Bush Bore Diameter:

Item	Specified Condition
STD	10.285 to 10.306 mm (0.4049 to 0.4057 in.)
O/S 0.05	10.335 to 10.356 mm (0.4069 to 0.4077 in.)

Select a new valve guide bush.

New Guide Bush:

Item	Specified Condition
Bush Bore Diameter	10.285 to 10.306 mm (0.4049 to 0.4057 in.)	10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Bush to be Used	STD	O/S 0.05

New Guide Bush Diameter:

Item	Specified Condition
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.)

HINT:

Different bushes are used for the intake and exhaust.

Heat the cylinder head to between 80 and 100°C (176 and 212°F).

Place the cylinder head on wooden blocks.

Using SST, tap in the valve guide bushes to the specified protrusion height.

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

Protrusion height:

9.30 to 9.70 mm (0.366 to 0.382 in.)

Using a sharp 5.5 mm reamer, ream the valve guide bushes to obtain the specified clearance.

Standard Oil Clearance:

Item	Specified Condition
Intake	0.025 to 0.060 mm (0.000984 to 0.00236 in.)
Exhaust	0.030 to 0.065 mm (0.00118 to 0.00256 in.)

Remove the 2 unions.

Apply adhesive to 2 or 3 threads at the bolt ends of new unions.

Adhesive:

Toyota Genuine Seal Adhesive 1324, Three Bond 1324 or equivalent

Using a 12 mm deep socket wrench, install the 2 unions.

Torque:

15 N*m{150 kgf*cm, 11 ft.*lbf}

Remove the tight plugs.

Apply adhesive around new tight plugs.

Adhesive:

Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent

Using SST and a hammer, tap in the tight plugs to the standard depth.

SST

09950-60010(09951-00250)
09950-70010(09951-07150)

Standard depth:

1.5 mm (0.0591 in.)

Using a plastic-faced hammer, tap in new straight pins as shown in the illustration.

Standard Protrusion Height:

Item	Specified Condition
Pin A	17.5 to 19.5 mm (0.689 to 0.768 in.)
Pin B	7.5 to 8.5 mm (0.295 to 0.335 in.)
Pin C	7.0 to 9.0 mm (0.276 to 0.354 in.)

Using a plastic-faced hammer, tap in new ring pins to the specified protrusion height.

Standard protrusion height:

2.7 to 3.3 mm (0.106 to 0.0969 in.)