300ZX V6-2960cc 3.0L SOHC MFI (VG30E) (1988)
6. Turn tensioner 70 to 80 degrees clockwise with hexagon wrench, and temporarily tighten lock nut.
7. Turn crankshaft clockwise 2 or 3 times, then slowly set No.1 cylinder at T.D.C. on its compression stroke.
8. Push middle of timing belt between R.H. camshaft sprocket and tensioner pulley with force of 98 N (10 kg. 22 lb).
9. Loosen tensioner lock nut, keeping tensioner steady with a hexagon wrench.
10. Set thickness gauge as shown in the image which is 0.35 mm (0.0138 in) thick and 12.7 mm (0.500 in) wide.
11. Turn crankshaft clockwise, and set thickness gauge as shown in the image.
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Timing belt will move about 2.5 teeth.
12. Tighten tensioner lock nut. keeping tensioner steady with a hexagon wrench.
13. Turn crankshaft clockwise or counterclockwise. and remove thickness gauge.
14. Turn crankshaft clockwise 2 or 3 times, then slowly set No.1 cylinder at T.D.C. on its compression stroke.