RM3660EC _51 Engine / Hybrid System _080726 8ZR-FXE ENGINE MECHANICAL _0391621 CYLINDER HEAD A

8ZR-FXE ENGINE MECHANICAL  CYLINDER HEAD  REASSEMBLY  


PROCEDURE

Hide 1.INSTALL SPARK PLUG TUBE

HINT:

When using a new cylinder head sub-assembly, the spark plug tubes must be replaced.


a.
A378011
1.833,0.292 2.146,0.49 0.313,0.198 10 false *a 1.646,1.729 1.958,1.927 0.313,0.198 10 false *b
*a Application Width
*b 1.0 to 13.0 mm (0.0394 to 0.512 in.)


Apply adhesive to a new spark plug tube as shown in the illustration.

Adhesive:

Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent


Standard Application Width:

1.0 to 3.0 mm (0.0394 to 0.118 in.)


NOTICE:
·

Install the spark plug tube within 3 minutes of applying adhesive.

·

Be careful not to deform the spark plug tube.

·

Be careful not to expose the adhesive to engine oil for at least 1 hour after installing the spark plug tube.




b.
A436371
0.74,0.354 0.979,0.354 0.979,0.354 1.344,0.875 true 0.563,0.26 0.875,0.417 0.313,0.156 10 false *a 0.531,3.271 0.781,3.438 0.25,0.167 10 false *b
*a Wooden Block
*b 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.)


NOTICE:

To avoid tapping in the spark plug tube too far, measure the protrusion height while tapping it.



Hide 2.INSTALL NO. 2 STRAIGHT SCREW PLUG

HINT:

If coolant leaks from a No. 2 straight screw plug or a plug is corroded, replace it.


a.
A374034

Using a 10 mm straight hexagon wrench, install 3 new gaskets and the 3 No. 2 straight screw plugs to the cylinder head sub-assembly.

Torque:
44 N*m (449 kgf*cm, 32 ft.*lbf)


Hide 13734 3.INSTALL VALVE SPRING SEAT

a.

Install the 16 valve spring seats to the cylinder head sub-assembly.


Hide 4.INSTALL VALVE STEM OIL SEAL

a.

Apply a light coat of engine oil to 16 new valve stem oil seals.

NOTICE:

Pay attention when installing the intake valve stem oil seals. For example, installing an intake side valve stem oil seal to the exhaust side or installing an exhaust side valve stem oil seal to the intake side can cause installation problems later.


HINT:
A378013
0.938,1.042 1.208,0.625 1.208,0.625 1.354,0.625 false 2.688,0.99 2.958,0.573 2.958,0.573 3.104,0.573 false 0.125,0.146 0.438,0.344 0.313,0.198 10 false *a 1.833,0.125 2.146,0.323 0.313,0.198 10 false *b 1.417,0.552 1.729,0.75 0.313,0.198 10 false *c 3.167,0.51 3.417,0.729 0.25,0.219 10 false *d
*a Intake Side
*b Exhaust Side
*c Gray
*d Black


The intake valve stem oil seal is gray and the exhaust valve stem oil seal is black.



b.
A374053
0.365,0.177 1.052,0.667 true 3.135,1.073 3.135,1.552 true 0.583,1.302 0.896,1.458 0.313,0.156 10 false *a 1.927,1.292 2.24,1.448 0.313,0.156 10 false *b 0.083,0.083 0.542,0.281 0.458,0.198 10 false SST 3.031,1.604 3.396,1.823 0.365,0.219 10 false SST
*a Correct
*b Incorrect


Using SST, push in the 16 valve stem oil seals.

SST
09201-41020  

NOTICE:
·

Failure to use SST will cause the intake valve stem oil seal to be damaged or improperly seated.

·

Do not push in the intake valve stem oil seals at an angle.




Hide 13715 5.INSTALL EXHAUST VALVE

a.
A378014
2.604,1.323 2.917,1.521 0.313,0.198 10 false *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.


b.
A378015
0.979,0.646 1.615,0.646 false 0.927,1.271 1.563,1.271 false 0.917,1.677 1.042,1.677 1.042,1.677 1.188,1.865 false 0.719,1.188 1.031,1.385 0.313,0.198 10 false *1 0.792,0.573 1.104,0.771 0.313,0.198 10 false *2 0.708,1.604 1.021,1.802 0.313,0.198 10 false *3
*1 Inner Compression Spring
*2 Valve Spring Retainer
*3 Cylinder Head Sub-assembly
V100135

Top Side


Install the 8 exhaust valves, 8 inner compression springs and 8 valve spring retainers to the cylinder head sub-assembly.

NOTICE:
·

Install the inner compression spring with its tapered side facing upward (towards the valve spring retainer).

·

Install the same parts in the same combination to their original locations.




c.
A374031C01
1.865,2.052 2.771,1.917 2.771,1.917 2.458,1.615 false 0.573,0.281 0.688,0.375 false 2.833,1.854 3.146,2.01 0.313,0.156 10 false *a 0.323,0.177 0.781,0.375 0.458,0.198 10 false SST
*a Wooden Block


Using SST and wooden blocks, compress the inner compression spring and install the 8 valve spring retainer locks.

SST
09202-70020  (09202-01010, 09202-01020)
09202-00021  


d.
A374055
1.76,2.042 1.875,1.979 false 1,0.698 1.25,0.406 false 1.281,0.281 1.594,0.438 0.313,0.156 10 false *a 1.594,1.99 1.906,2.146 0.313,0.156 10 false *b
*a Plastic Hammer
*b Wooden Block


Using a plastic hammer, lightly tap the valve stem tip to ensure a proper fit.

NOTICE:
·

Be careful not to damage the valve stem tip.

·

Be careful not to damage the valve spring retainer.




Hide 13711 6.INSTALL INTAKE VALVE

a.
A378016
2.604,1.333 2.917,1.531 0.313,0.198 10 false *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.


b.
A378015
0.979,0.646 1.615,0.646 false 0.927,1.271 1.563,1.271 false 0.917,1.677 1.042,1.677 1.042,1.677 1.188,1.865 false 0.719,1.188 1.031,1.385 0.313,0.198 10 false *1 0.792,0.573 1.104,0.771 0.313,0.198 10 false *2 0.708,1.604 1.021,1.802 0.313,0.198 10 false *3
*1 Inner Compression Spring
*2 Valve Spring Retainer
*3 Cylinder Head Sub-assembly
V100135

Top Side


Install the 8 intake valves, 8 inner compression springs and 8 valve spring retainers to the cylinder head sub-assembly.

NOTICE:
·

Install the inner compression spring with its tapered side facing upward (towards the valve spring retainer).

·

Install the same parts in the same combination to their original locations.




c.
A374030C01
2.604,1.844 2.896,1.844 false 1.542,0.656 1.833,0.656 false 2.969,1.771 3.281,1.927 0.313,0.156 10 false *a 1.26,0.594 1.719,0.792 0.458,0.198 10 false SST
*a Wooden Block


Using SST and wooden blocks, compress the inner compression spring and install the 8 valve spring retainer locks.

SST
09202-70020  (09202-01010, 09202-01020)
09202-00021  


d.
A374054
2.656,1.896 3.104,1.948 3.104,1.948 3.104,1.552 false 2,0.844 2.302,0.323 true 2.333,0.156 2.646,0.313 0.313,0.156 10 false *a 3.125,1.969 3.375,2.167 0.25,0.198 10 false *b
*a Plastic Hammer
*b Wooden Block


Using a plastic hammer, lightly tap the valve stem tip to ensure a proper fit.

NOTICE:
·

Be careful not to damage the valve stem tip.

·

Be careful not to damage the valve spring retainer.