Riviera V6-3.8L SC VIN 1 (1995)
11. Balance shaft drive gear and bolt.
NOTICE: This bolt is designed to permanently stretch when tightened. The correct part number fastener must be used to replace this type of
fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. Part or system
damage may occur.
TIGHTEN
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Bolt to 22 Nm (16 lb.ft.) plus 70°.
12. Rear main oil seal housing (VIN K), rear plug (except VIN K).
MEASURE
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Balance shaft end play. End play should be 0.203 mm (0.008 inch).
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Balance shaft front radial play. Radial play should be 0.206 mm (0.0011 inch).
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Balance shaft rear radial play. Radial play should be 0.0127-0.119 mm (0.0005-0.0047 inch).
13. Turn the camshaft so that with the camshaft sprocket temporarily installed, the timing mark is straight down.
14. With the camshaft sprocket and the camshaft gear removed, turn the balance shaft so that the timing mark on the gear points are straight down.
15. Camshaft gear.
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Align the marks on the balance shaft gear and the camshaft gear by turning the balance shaft.
16. Turn the crankshaft so that number one piston is at top dead center (TDC).
17. Timing chain and camshaft sprocket. Measure
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Gear lash at four places (every 1/4 turn):
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Gear lash should be 0.050-0.127 mm (0.002-0.005 inch).
18. Balance shaft retainer and bolts.
TIGHTEN
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Bolts to 30 Nm (22 lb.ft.).
19. Timing chain and camshaft sprocket.
20. Flywheel.
