OEM 2007 Toyota Corolla Timing Chain

2007 Toyota Corolla Parts Questions & Experts Answers

• Q: How to service and repair the timing chain on 2007 Toyota Corolla?

  A: First service technicians must disconnect the negative terminal of the battery followed by removing the front wheel on the right-hand side and engine cover on the right-hand side and cylinder head cover number 2 while unfastening the 2 nuts and 2 clips. First drain engine coolant before proceeding to separate the fan from the generator V belt and extract the vane pump assembly as well as the generator assembly. Before harvesting the timing chain commence by unbolting 2 mount bracket screws, disconnecting the oil reservoir No. 1 bracket, and sustain the engine structure with a wooden block on a jack stand after unlocking 4 bolts, 2 nuts. First disconnect four ignition coil connectors followed by removing two nuts. Then separate the engine wire finally removing the four ignition coils. Detach the ventilation hoses from the cylinder head cover before proceeding to unclamp three engine wire clamps while gradually separating 9 bolts and 2 seal washers with 2 nuts and 3 clamp brackets to remove the entire cylinder head cover. The mechanism needs to be detached from the V-ribbed belt tensioner assembly by disassembling its bolt and nut then using engine jacking for bolt removal before removing engine mounting bracket RH and water pump assembly. The crankshaft position sensor must be detached by removing its two bolts while the crankshaft pulley must be aligned at "0" from the timing mark to achieve No. 1 cylinder TDC/compression and verify that the camshaft timing gears remain synchronized. The crankshaft pulley bolt and pulley should be removed using Special Service Tool: 09960-10010 (09962-01000, 09963-01000). The chain tensioner assembly No.1 can be removed by unfastening 2 nuts while avoiding crankshaft rotation without the tensioner present. Proceed to separate the timing chain or belt cover sub-assembly through the removal of 10 bolts and 2 nuts while utilizing a "TORX" wrench socket (E8) for the stud bolt and carefully using a screwdriver for cover prying. The engine requires protection as you use two screwdrivers to extract the chain with the crankshaft timing gear from its position by removing the timing chain or belt cover oil seal, crankshaft position sensor plate No.1, and chain tensioner slipper. Set the number one cylinder to its compression state at top dead center while aligning the camshaft timing gears before putting the chain on the crankshaft timing gear with yellow mark link facing forward. Use Special Service Tool: 09223-22010 for installing the crankshaft timing gear. Fasten the tensioner slipper first and afterward install the chain onto both timing gears before tightening it to 18.5 Nm (189 kgf-cm, 14 ft. lbs.) torque. The "F" mark on crankshaft position sensor plate No.1 should face forward when installation is complete. A new oil seal lip needs grease application before tapping it into position through Special Service Tool: 09223-22010. The cover installation requires ten bolts and two nuts while utilizing seal packing at the contact points before securing the components with specified torque values. The chain tensioner assembly No.1 requires clean and lubricated O-ring installation followed by the crankshaft pulley which should be aligned with pulley set key while using Special Service Tool: 09960-10010 (09962-01000, 09963-01000) for security. After proper torque specifications, complete the installation of the crankshaft position sensor and water pump assembly and engine mounting bracket RH alongside the V-ribbed belt tensioner assembly along with the cylinder head cover sub-assembly, ignition coil assembly, engine mounting insulator RH, generator assembly and vane pump assembly sequence. Before completion add engine coolant then reconnect the negative terminal while inspecting for leakages and install the front wheel RH together with cylinder head cover No.2 following torque specifications at every stage.