OEM 2006 Toyota Corolla Timing Chain

2006 Toyota Corolla Parts Questions & Experts Answers

• Q: How to service the timing chain on 2006 Toyota Corolla?

  A: The first step for servicing the 1ZZ-FE engine timing chain requires battery terminal disconnection and front right wheel removal with engine under cover and cylinder head cover No.2 unscrewing two nuts and two clips. Start the procedure by draining engine coolant followed by extracting the fan and generator V belt and dividing the vane pump assembly then eliminating the generator assembly. The timing chain service begins with engine support using a jack and wooden block then 2 bolt removal from the engine mounting insulator along with unfastening the oil reservoir bracket No.1. Start by disconnecting the latent wire terminals from the ignition coil and removing 2 nautical screws followed by removing the motor wire to extract the four ignition coils. Silicone hoses should be detached from the cylinder head cover then 3 clamps from the engine wire must be removed before unbolting 9 head cover screws along with 2 seal washers, 2 nuts and 3 clamp brackets for full cover removal. Unfasten the bolt and nut from the V-ribbed belt tensioner assembly before jacking the engine if necessary to remove the engine mounting bracket RH by taking out its three bolts. The water pump assembly and crankshaft position sensor must be removed after 2 bolt fasteners are loosened. Start with setting the No.1 cylinder to TDC by lining up the crankshaft pulley groove with the timing mark "0" and verify correct alignment of the camshaft timing gears. To remove the crankshaft pulley first unfasten its bolt by using Special Service Tool: 09960-10010 (09962-01000, 09963-01000) then detach the crankshaft pulley. Unfasten two nuts from the chain tensioner assembly No.1 while keeping the crankshaft stationary before the tensioner extraction. Begin by removing the sub-assembly of timing chain or belt cover through unfastening 10 bolts and 2 nuts before using a torx wrench socket (E8) to detach the stud bolt and prying off the timing chain cover with caution. Start the procedure by removing the timing chain or belt cover oil seal, crankshaft position sensor plate No.1 along with chain tensioner slipper. The installation of the chain sub-assembly requires users to apply 2 screwdrivers for prying it out while using shop rags for engine protection and rotating the crankshaft by 1/4 revolution to avoid piston-valve contact. Begin installing the chain sub-assembly when setting the No.1 cylinder to TDC/compression then align the camshaft timing gears before placing the chain on the crankshaft timing gear where the yellow mark link needs to be straight. Special Service Tool 09223-22010 allows installation of the crankshaft timing gear as well as chain alignment onto the camshaft timing gears. Apply 18.5 Nm torque to the chain tensioner bolt while installing it for the tensioner slipper before you place the crankshaft position sensor plate no.1 into position with the "F" mark orienting forward. Prior to installing a new oil seal lip apply multi-purpose grease and follow by use of Water pump part: Part No.08826-00100 or equivalent as well as other part: Part No.08826-00080 or equivalent to create a continuous seal packing (Diameter 3.5 to 4.5 mm (0.138 to 0.177 inch)) during installation of the timing chain or belt cover sub-assembly. Secure the timing chain cover by threading in 10 bolts along with securing 2 nuts at their proper torque specification levels then install the chain tensioner assembly No.1 with 2 nuts that come with an oiled O-ring. Mount the crankshaft pulley while setting the pulley key properly and tighten the crankshaft pulley bolt with Special Service Tools 09960-10010 and its derivatives to 138 Nm (1,407 kgf-cm or 102 ft. lbs.). Secure the crankshaft position sensor and water pump assembly with correct torque when installing them along with the engine mounting bracket RH. Position the V-ribbed belt tensioner assembly followed by engine mounting insulator on the RH side and ignition coil assembly then cylinder head cover sub-assembly with seal packing. Torque tighten all components to their specified values. The conclusion of the operation requires the generator assembly along with the vane pump assembly and fan and generator V belt installation followed by engine coolant addition before reconnecting the battery negative terminal and inspecting for leaks before placing the cylinder head cover No.2 and front right wheel while adhering to torque specifications.