Cylinder Head: Disassembly and Assembly
Cylinder Head: Disassembly and AssemblyDISASSEMBLY
1) Remove spark plug.
2) Remove valve lifter.
^ Identify installation positions, and store them without mixing them up.
3) Remove valve collet.
^ Compress valve spring and remove valve collet with magnet hand using Tool.
CAUTION:
When working, take care not to damage valve lifter holes.
Tool numbers
:KV10109220 ( - )
:KV10116200 (J-26336-B)
:KV10115900 (J-26336-20)
4) Remove valve spring retainer, valve spring and valve spring seat.
5) Push valve stem to combustion chamber side, and remove valve.
^ Identify installation positions, and store them without mixing them up.
6) Remove valve oil seals using Tool.
Tool number: KV10107902 (J-38959)
7) If valve seat must be replaced, refer to [Cylinder Head: Inspection After Disassembly].
8) If valve guide must be replaced, refer to [Cylinder Head: Inspection After Disassembly].
9) Remove spark plug tube, as necessary.
^ Using pair of pliers, pull spark plug tube out of cylinder head.
CAUTION:
^ Take care not to damage cylinder head.
^ Once removed, spark plug tube will be deformed and cannot be reused. Do not remove it unless absolutely necessary.
ASSEMBLY
1) When valve guide is removed, install it.
2) When valve seat is removed, install it.
3) Install valve oil seals using Tool.
Tool number: - (J-39386)
Height (H) (Without valve spring seat installed)
Intake and exhaust :14.3 - 14.9 mm (0.563 - 0.587 in)
4) Install valve spring seat.
5) Install valves.
^ Install it in the original position.
NOTE:
Larger diameter valves are for intake side.
6) Install valve spring (uneven pitch type).
^ Install narrow pitch end (paint mark) to cylinder head side (valve spring seat side).
7) Install valve spring retainer.
8) Install valve collet.
^ Compress valve spring using Tool, attachment and adapter using Tool. Install valve collet with magnet hand.
Tool numbers
:KV10109220 (-)
:KV10116200 (J-26336-B)
:KV10115900 (J-26336-20)
CAUTION:
When working, take care not to damage valve lifter holes or valve stems.
^ Tap valve stem edge lightly with plastic hammer after installation to check its installed condition.
9) Install valve lifter.
^ Install it in the original position.
10) Install spark plug tube.
^ Press-fit spark plug tube as follows:
a) Remove old liquid gasket adhering to cylinder head mounting hole.
b) Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side. Use Genuine High Strength Locking Sealant or equivalent.
c) Press-fit spark plug tube so that its height (H) is as specified using suitable drift.
Standard press-fit height (H) :38.1 - 39.1 mm (1.500 - 1.539 in)
CAUTION:
^ When press-fitting, take care not to deform spark plug tube.
^ After press-fitting, wipe off liquid gasket protruding onto cylinder-head upper face.
11) Install spark plug.