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CAMSHAFT VALVE CLEARANCE EM-137 < PERIODIC MAINTENANCE > [VQ40DE] C D E F G H I J K L M A EM N P O • Thickness of new valve lifter can be identified by stamp marks on the reverse side (inside the cylinder). Intake Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to . Exhaust Available thickness of valve lifter: 25 sizes with range 7.88 to 8.36 mm (0.3102 to 0.3291 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to . CAUTION: Install identification letter at the end and top, “U” and “N”, at each of proper positions. (Be care- ful of mis-installation between intake and exhaust.) 6. Install selected valve lifter. EM-193, "Removal and Installation" . 8. Manually turn crankshaft pulley a few turns. fied values. 10. Installation of the remaining components is in the reverse order of removal. Valve lifter thickness calculation: t = t 1 + (C 1 – C 2 ) t = Valve lifter thickness to be replaced t 1 = Removed valve lifter thickness C 1 = Measured valve clearance C 2 = Standard valve clearance: Intake : 0.30 mm (0.012 in)* Exhaust : 0.33 mm (0.013 in)* *: Approximately 20 °C (68°F) KBIA0119E Stamp mark Thickness 788U 7.88 mm (0.3102 in) 790U 7.90 mm (0.3110 in) · · · · 840U 8.40 mm (0.3307 in) Stamp mark Thickness N788 7.88 mm (0.3102 in) N790 7.90 mm (0.3110 in) · · · · N836 8.36 mm (0.3291 in) |