OEM 2003 Toyota Matrix Timing Chain

2003 Toyota Matrix Parts Questions & Experts Answers

• Q: How to Replace a Timing Chain on 2003 Toyota Matrix?

  A: Start the timing chain replacement by eliminating the engine under cover RH while you empty the coolant and detach the front wheel RH. The next step requires removal of the cylinder head cover No.2 by unfastening the 2 nuts and 2 clips followed by removing the cover. Untwist the fan and generator V-belt tensioner by rotating it clockwise before you eliminate the belt and adjust the tensioner correctly. Set the vane pump assembly apart from the hose without removal followed by generator assembly removal. The procedure to uninstall the engine mounting insulator sub-assembly RH involves removing the PS oil pump reservoir followed by placing a wooden block between the jack and engine and then removing 4 bolts and 2 nuts. The procedure starts by removing 5 clamps from the engine wire and disconnecting 4 ignition coil connectors and unfastening a bolt and nut. Start by removing the 4 bolts of the ignition coil assembly along with its coils then disconnect ventilation hoses from the cylinder head cover. The cylinder head cover sub-assembly removal requires the removal of 9 bolts together with 2 seal washers, 2 nuts and 3 clamp brackets and the cover itself. Inspects No. 1 cylinder for TDC/compression position by making sure both the crankshaft pulley has "0" timing mark alignment and the points on the camshaft and VVT timing sprockets match. The crankshaft pulley requires SST 09960-10010 (09962-01000, 09963-01000) for removal before detaching the V-ribbed belt tensioner assembly. Start by removing the transverse engine mounting bracket together with the water pump assembly after unthreading the 3 bolts. The crank position sensor removal requires unfastening its 2 bolts followed by dismantling chain tensioner assembly No.1 through the removal of its 2 nuts. It is crucial to prevent crankshaft revolutions without using the chain tensioner. The timing chain or belt cover sub-assembly needs removal that requires undoing the 11 bolts and nuts followed by stud bolt extraction through a torx wrench socket (E8) before carefully prying the cover off. First remove the timing gear cover oil seal with a screwdriver before taking out the crankshaft position sensor plate No.1 and chain tensioner slipper by removing the bolt. Pry the timing chain off the crankshaft timing gear while using screwdrivers but take precautions with a shop rag to protect the engine then rotate the crankshaft 1/4 revolutions to stop valves from touching pistons. Begin installation of the chain sub-assembly after setting No. 1 cylinder at TDC/compression while lining up camshaft timing sprockets and fitting the timing chain to the crankshaft timing sprocket with its yellow link at the timing mark. Follow instructions using SST 09223-22010 to attach the crankshaft timing sprocket after which you can place the timing chain on camshaft timing sprockets. The chain tensioner slipper requires installation with its bolt through which you must apply 19 Nm (194 kgf-cm, 14 ft. lbs.) torque. First attach the crankshaft position sensor plate with "F" mark indicating forward direction and afterward lubricate the new oil seal lips by applying MP grease before installing them with SST 09223-22010. The timing chain or belt cover sub-assembly requires removal of old packing and seal packing installation before securing the cover through specified torque values. Correctly position the chain tensioner hook along with a clean O-ring and install the cap. Mount the crank position sensor using both bolts. Add the three bolts to settle the transverse engine mounting bracket while proceeding to set the water pump assembly before tightening the V-ribbed belt tensioner assembly according to specifications. Use the set key to properly install the crankshaft pulley bolt with SST 09960-10010 before tightening it to 138 Nm (1,407 kgf-cm, 102 ft. lbs.). After turning the crankshaft to push the plunger against the slipper installed the cylinder head cover sub-assembly with proper torque values while using seal packing. Use 4 bolts to secure the ignition coil assembly before installing the engine wire through its bolt then adding the nut. The last maintenance steps involve installing the engine mounting insulator sub-assembly RH together with the generator assembly and the vane pump assembly and the cylinder head cover No.2 and then the front wheel RH followed by adding coolant before performing leak checks on engine coolant and oil.