Disassembly And Assembly

CYLINDER HEAD

Disassembly and Assembly












CAUTION:
- When installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting surfaces with new engine oil.
- Apply new engine oil to threads and seat surfaces when installing the cylinder head, camshaft sprocket, crankshaft pulley and camshaft bracket.
- Attach tags to valve lifters so all parts are assembled in their original position.

CAUTION:
Read PRECAUTION carefully.
The exhaust valve contains metallic sodium. Therefore, extreme caution must be taken when handling and disposing of the exhaust valve. Refer to "Special Cautions to Ensure the Safe Disposal of Sodium-filled Exhaust Valves" Special Cautions To Ensure The Safe Disposal Of Sodium-Filled Exhaust Valves.

DISASSEMBLY

1.Remove the valve lifter.
NOTE:
Confirm installation point to return valve lifter to original location during assembly.
2.Remove valve collet.





- Compress valve spring using Tools. Remove valve collet with a magnet hand.

Tool number (A): KV10116200 (J-26336-A)
Tool number (B): KV10109220 ( - )
Tool number (C): KV10115900 (J-26336-20)

CAUTION:
- Be careful not to damage valve lifter holes.





- Install tool (A) in the center of valve spring retainer to press it.

Tool number: KV10115900 (J-26336-20)

(1) : Valve spring retainer

3.Remove valve spring retainer and valve spring (with valve spring seat).

CAUTION:
Do not remove valve spring seat from valve spring.
4.Push valve stem to combustion chamber side, and remove valve.
- Inspect valve guide clearance before removal. Refer to "Inspection After Disassembly" Inspection.
- Confirm installation point to return valve to original location during assembly.





5.Remove valve oil seal using Tool (A).
Tool number: KV10107902 (J-38959)
6.When valve seat must be replaced, refer to "Inspection After Disassembly" Inspection.
7.When valve guide must be replaced, refer to "Inspection After Disassembly" Inspection.
8.Remove spark plug tubes, if necessary, using suitable tool.

CAUTION:
- Be careful not to damage cylinder head.
- Do not remove spark plug tube if not necessary. Once removed, the spark plug tube cannot be reused because of deformation during removal.

ASSEMBLY

1.Install valve guide. Refer to "Inspection After Disassembly" Inspection.
2.Install valve seat. Refer to "Inspection After Disassembly" Inspection.
3.Apply new engine oil to new valve oil seal joint surface and seal lip.





4.Install new valve oil seal using Tool (A) as shown.

Oil seal installed height (H): 12.1 mm (0.476 in)

Tool number: KV10115600 (J-38958)

5.Install valve.
- Install larger diameter to intake side.





6.Install valve spring with valve spring seat (1).
- Install valve spring so that the identification color faces upward (A).
- Install smaller pitch to cylinder head side (B).
- Confirm the identification color of the valve spring.
- Intake: white
- Exhaust: light blue
7.Install valve spring retainer.
8.Install valve collet.





- Compress valve spring using Tools. Install valve collet with a magnet hand.

Tool number (A): KV10116200 (J-26336-A)
Tool number (B): KV10109220 ( - )
Tool number (C): KV10115900 (J-26336-20)

CAUTION:
When working take care not to damage valve lifter holes.
- Tap valve stem edge lightly with a plastic hammer after installation to check its installed condition.
9.Install valve lifter.





10.Install spark plug tube.
a.Remove old liquid gasket from cylinder head mounting hole.
b.Apply liquid gasket all around on spark plug tube with a 12 mm (0.47 in) width from edge of spark plug tube on the press fit side.
- Use Three Bond or equivalent. Refer to "Recommended Chemical Products and Sealants" Recommended Chemical Products And Sealants.
c.Press fit spark plug tube so that height (H) is as shown.

Press fit height (H) standard value: 41.7 mm (1.642 in)

CAUTION:
- When press fitting be careful not to deform spark plug tube.
- After press fitting, wipe off any protruding liquid gasket on top surface of cylinder head.