Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Remove spark plug.
Remove valve lifter.
- Identify installation positions and store them without mixing them up.
Remove valve collet.

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- Compress valve spring and remove valve collet with magnet hand using suitable tool (A)
CAUTION: When working, take care not to damage valve lifter bore.
- Install a suitable tool (A) in the center of the valve spring retainer (1) to remove it.
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Remove valve spring retainer, valve spring and valve spring seat.
Push valve stem to combustion chamber side and remove valve.
- Identify installation positions, and store them without mixing them up.
Remove valve oil seals using suitable tool (A).

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If valve seat must be replaced, refer to Inspection After Disassembly .
If valve guide must be replaced, refer to Inspection After Disassembly .
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.