OEM 2009 Scion tC Timing Chain

2009 Scion tC Parts Questions & Experts Answers

• Q: How to remove the timing chain on 2009 Scion tC?

  A: The process of extracting the timing chain from a 2AZ-FE engine requires first disconnecting the negative battery cable then waiting 90 seconds for Air Bag prevention before starting work. The service manager should start by taking out the hood sub-assembly followed by the front right wheel and both engine under covers and front fender apron seal on the right hand side and lastly two nuts securing the No. 1 engine cover sub-assembly. Proceed with draining the engine coolant followed by front exhaust pipe assembly removal, fan and generator V belt, generator assembly and vane pump assembly. The right engine mounting insulator detachment process starts by removing the bolt and radiator reservoir followed by separate vane pump oil reservoir from the No. 1 oil reservoir bracket using a wrench without breaking oil reservoir hose attachment. Finish the procedure by removing all required bolts and nuts. A transmission jack accompanied by a wooden block will enable safe engine support to facilitate the removal of front engine mounting insulator along with ignition coil assembly. The procedure for removing the cylinder head cover sub-assembly starts by separating engine wire clamps and ventilation hoses and continues with 8 bolt removal and 2 nut removal. Start with lifting the engine slightly to remove the V-ribbed belt tensioner assembly and then proceed to the crankshaft position sensor and finally remove the oil pan sub-assembly by installing the No. 1 and No. 2 engine hangers while holding the engine with a chain block and removing the 12 bolts and 2 nuts. Use proper methods to remove the oil pan after cutting away the cured sealer from it. Position the No. 1 cylinder at TDC compression point by aligning the crankshaft pulley groove to timing mark "0" while maintaining correct timing gear alignment between the camshafts. The crankshaft pulley removal process begins with utilizing Special Service Tool: 09213-54015 91651-60855 to secure the pulley while loosening the bolt before using Special Service Tool: 09950-50013 09951-05010 to finish extraction. The installation process starts with detaching the No. 1 chain tensioner assembly bolt before disconnecting its wire harness protector clamp. This allows technicians to perform the timing chain cover sub-assembly removal using an E10 "TORX" socket to remove the V-ribbed belt tensioner stud bolt. Afterwards, all 14 bolts and 2 nuts need to be removed. Prize the timing chain cover gently and proceed to remove the No. 1 crankshaft position sensor plate followed by the timing chain guide and chain tensioner slipper and then take off the chain sub-assembly and No. 1 chain vibration damper and crankshaft timing sprocket. The procedure for handling the No. 2 chain sub-assembly requires turning the crankshaft counterclockwise by 90 degrees to position the adjusting hole on the oil pump drive shaft gear with the groove. Then secure the gear with a 4 mm diameter bar before removing the nut, bolt, chain tensioner plate, spring, oil pump drive gear, oil pump drive shaft gear, and No. 2 chain.