OEM 2008 Toyota Yaris Camshaft

2008 Toyota Yaris Parts Questions & Experts Answers

• Q: How to Install and Align the Camshaft Timing Gear Assembly, Timing Chain, and Related Components During Camshaft No.1 and No.2 Installation on 2008 Toyota Yaris?

  A: The installation process of the camshaft timing gear assembly begins with pin release followed by matching the assembly to the camshaft while pushing it clockwise with the straight pin through the groove until it becomes secure and without any clearance between the gear flange and camshaft. The flange bolt must get torqued at 64 Nm (653 kgf-cm, 47 ft-lbf) without any locking of the camshaft timing gear assembly while performing this operation. Smooth retard motion must be confirmed before applying a drop of engine oil to the camshaft and journals and installing the chain onto the camshaft timing gear. Align paint and timing marks during this process. Widen the bolts on camshaft bearing cap No. 2 while checking their front marks then tighten them in the proper sequence to 13 Nm (129 kgf-cm, 9.4 ft-lbf) while maintaining level camshaft orientation. To install sprocket No. 2 align the marking on the camshaft that faces the paint mark then put the piece in place and install the flange bolt while fixing bearing cap bolt No. 1 to 23 Nm (235 kgf-cm, 17 ft-lbf) and No. 2 to 13 Nm (129 kgf-cm, 9.4 ft-lbf) before maintaining the camshaft at a level position. Slightly tighten the camshaft No. 2 flange bolt to 64 Nm (653 kgf-cm, 47 ft-lbf) by applying Special Service Tool: 09023-38400 to hold its hexagonal lobe. Reinstall the bar from the timing chain tensioner while keeping the crankshaft damper timing notch directly at the oil pump's timing mark "0" and verifying complete alignment of timing marks. The screw plug should be installed with adhesive applied to its last 2 or 3 threads then secured using a 8 mm hexagon wrench and torqued to 15 Nm (153 kgf-cm, 11 ft-lbf). First inspect valve clearance while performing adjustments then install the engine mounting insulator sub-assembly RH then follow with installation and adjustment of the fan and generator V belt followed by inspects of the V belt afterward finish with the install of the cylinder head cover sub-assembly and ventilation hose connections after which install ignition coil No. 1 and connect the negative battery terminal using 5.4 Nm (55 kgf-cm, 48 in-lbf) torque before checking for oil leakage and concluding with the installation of cylinder head cover No. 2 and the engine under cover RH.