GENINFO General information1-9 69J3D11Valve train systemThe valve train consists of a total of four camshafts, with two in each bank.The camshafts are driven with the combination of a belt and chains. The crankshaft turns the belt todrive the exhaust camshafts in both banks. Chains connect the exhaust camshafts to the intakecamshafts in the cylinder heads to drive the intake camshafts.In addition, the timing belt offers quieter operation, and the cam chains help to achieve a compactconfiguration through the use of individual driven sprockets.Timing beltThe timing belt, which is driven by the drive sprocket that is attached to the crankshaft, rotates thedriven sprockets that are attached to the exhaust camshafts of both banks. The drive sprocket forthe timing belt is secured to the crankshaft by four bolts, and it can be removed easily for servicing.In addition, the material of the driven sprockets has been changed from the previous metal to plasticfor weight reduction.1 Driven sprocket2 Timing chain3 Intake camshaft4 Crankshaft5 Drive sprocket6 Timing belt7 Exhaust camshaft8 Hydraulic timing belt tensionerS69J1290
