40 ENGINE — 2UZ-FE ENGINE 3. Automatic Tensioner The automatic tensioner is made up of a spring and oil damper, and maintains proper timing belt tension at all time. The automatic tensioner suppresses noise generated by the timing belt. Push Rod Oil Seal Silicone Oil Check Ball Spring Automatic Tensioner 156EG12 4. Intake and Exhaust Valve and Valve Lifter Intake and exhaust valves with large-diameter valve face have been adopted to improve the intake and exhaust efficiency. In addition, narrower valve stems have been adopted to reduce the intake and exhaust resistance and for weight reduction.
Inner shim type valve adjusting shims, which allow a greater amount of valve lift, have been adopted. Valve lifters made of steel have been adopted. The valve lifter, which has been made lighter and thinner, provides crowning on its side sliding portion to reduce noise and friction. Camshaft Crowning Valve Adjusting Shim Valve Lifter Valve 151EG34