Altima L4-2.5L (QR25DE) (2009)
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Thickness of a new valve lifter can be identified by stamp marks on the reverse side (inside the cylinder).
Stamp mark 696 indicates a thickness of 6.96 mm (0.2740 in)
Available thickness of valve lifter: 26 sizes with a range of 7.88 to 8.38 mm (0.3102 to 0.3299 in), in steps of 0.02 mm
(0.0008 in), when assembled at the factory.
5. Install the selected valve lifter.
6. Install camshaft.
7. Manually turn crankshaft pulley a few turns.
8. Check that valve clearances for cold engine are within specifications, by referring to the specified values.
9. After completing the repair, check valve clearances again with the specifications for warmed engine. Use a feeler gauge to measure the clearance
between the valve and camshaft. Make sure the values are within specifications.
* Approximately 80C° (176°F)