OEM 2005 Scion xB Camshaft

2005 Scion xB Parts Questions & Experts Answers

• Q: How to replace the camshaft on 2005 Scion xB?

  A: Unlike other steps this process requires a teardown of the cylinder head cover Number 2 followed by removing its 4 nuts. Unscrewing the ignition coil No. 1 begins with removing its 4 bolts and extracting its 4 coils. Detach both ventilation hoses from the cylinder head cover before extracting the complete sub-assembly of the cover through the removal of 9 bolts and 2 nuts. Commence with engine under cover RH removal and then move to remove No. 2 camshaft while maintaining the crankshaft damper at a 40 degrees counterclockwise position from TDC and positioning the timing notch against the chain cover mark to prevent piston-valve collision. Align the time marks on the camshaft timing sprocket and gear while placing the No. 1 cylinder at TDC/compression position before marking the timing chain. The installation of the 8 mm hexagon wrench will remove the screw plug while using a screwdriver to grip the stopper plate and rotating camshaft No. 2 clockwise to push the plunger of the chain tensioner. Secure the stopper plate with a 2 to 3 mm diameter bar, proceed by holding the camshaft with a wrench to remove the bolt through Special Service Tool: 09023-38400. Detach the No. 2 camshaft and camshaft timing sprocket by first removing and loosening the specified sequence of 11 bearing cap bolts. First remove the timing chain string before loosening and removing the 8 bearing cap bolts. Keep the camshaft level and hold onto the timing chain then remove both camshaft and timing gear assembly components. Finally secure the timing chain with a string to avoid loss within the chain cover. The procedure for camshaft timing gear assembly removal consists of placing the camshaft into a vise clamp while applying tape to cover the oil paths before puncturing specific tape sections then operating air pressure against the damaged paths. Check if the camshaft timing gear assembly moves correctly in advance direction before removing its fringe bolt while avoiding the removal of the other 4 bolts. The procedure for installation requires you to position the camshaft timing gear assembly correctly on the camshaft followed by clockwise rotation while applying steady light pressure. Because the assembly requires 64 Nm (653 kgf-cm, 47 ft. lbs.) torque on the fringe bolt while verifying proper retarded position operations. Apply engine oil on camshaft journals before placing the timing chain onto the camshaft timing gear while torquing all bolts according to the specified sequence to 13 Nm (129 kgf-cm, 9.4 ft. lbs.). The painting on the timing chain link should match the timing sprocket mark before installing the timing sprocket bolt temporarily while torquing the bolts in proper sequence to 13 Nm (129 kgf-cm, 9.4 ft. lbs.). You must first torque bearing cap No. 1 to 23 Nm (235 kgf-cm, 17 ft. lbs.) before using a wrench to hold the camshaft while installing the bolt using Special Service Tool: 09023-38400 with a torque of 64 Nm (653 kgf-cm, 47 ft. lbs.). First align the crankshaft damper timing notch with the timing mark "0" while checking the alignment of all timing marks. The procedure requires applying seal packing (Part No. 08833-00070 or equivalent) to the screw plug end then fitting the screw plug using an 8 mm hexagon wrench to a torque of 15 Nm (153 kgf-cm, 11 ft. lbs.). Next, check and adjust valve clearance followed by cylinder head cover sub-assembly installation with seal packing (Part No. 08826-00080 or equivalent) applied to specified locations while ensuring prompt installation within three minutes. Fasten the cylinder head cover with 9 bolts and 2 seal washers and 2 nuts until it reaches 10 Nm (102 kgf-cm, 7.4 ft. lbs.) of torque. Begin fitting ignition coil No. 1 before securing the supporting cylinder head cover No. 2 by first using 9.0 Nm (92 kgf-cm, 80 inch lbs.) torque on A nuts then proceeding to bolt B torque to 7.0 Nm (71 kgf-cm, 62 inch lbs.). Finish by placing the engine under cover RH while tightening its bolt and nut to 5.0 Nm (51 kgf-cm, 44 inch lbs.) each before checking for any motor oil leakage.