Toyota 13506-22030 Chain Sub-Assembly

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For this procedure, special tools are needed hence once you go through the whole process, it's time to get the necessary tools and equipment. First of all, unwind the cable on the minus terminal of the battery then, unwind the drivebelt of the car and the alternator. Then, you should remove the windshield washer reservoir and the valve cover. Park the car and set the parking brake, move the shifter to Park or turn the transmission to gear, then unscrew the lug nuts on the right front wheel, lift the car and put it on jack stands. Disconnected the right front wheel and splash shield, and drain the cooling system as well. As the coolant is draining, unbolt the power steering pump from the engine but do not take off the fluid lines and then secure it to the body. The piston nearest to the timing belt, the first piston, must be located at top dead center on the compression stroke, aligning the timing marks. Loosen the bolts of the crankshaft pulley /vibration damper carefully and take it off in such a way that there is no shifting of the engine from TDC. Climb up and support the engine from above then drop down and support it from below then the next things to be removed are the passenger side engine mount, the drivebelt tensioner, the engine mount bracket and crankshaft position sensor bolted to the timing chain cover. Loosen the water pump and timing chain tensioner bolts, then the cover bolts securing the timing chain cover to the engine block, and lift the cover up. Remove the crankshaft position sensor reluctor ring by sliding it off the crankshaft, take off the timing chain tensioner pivot arm/chain guide and lift the timing chain off the camshaft sprockets and timing chain and crankshaft sprocket both will removed together. Visually examine all components for signs of wear and or damage, including the timing chain as well as the chain sprockets. Scrape off any remnants of the previous sealant on the timing chain cover and mating surfaces; also, put the camshaft sprockets on the places where they were previously located and tighten the bolts with thread locking compound. Turn the camshafts in order to have two TDC marks to be aligned and if needed turn the crankshaft in order to have keyway to be vertical. Place the slot of the stationary timing chain guide on the corresponding cylinder head dowel pin and fit the timing chain on to the crankshaft sprocket with the No.1 coloured link adjacent to the sprocket mark. Insert the timing chain into the guide and around the teeth of the camshaft sprockets ensuring that the rest of the links are colored. Take out slack through the chain and then put in the timing chain tensioner pivot arm/chain guide and fasten the bolt for the arm. Make sure that the #1 piston is at the TDC and the marks are lined properly. Align the crankshaft position sensor reluctor ring with the arrow and insert it in a manner that has the 'F' marked towards the outside, apply the RTV silicone sealant on the mating surfaces of the timing chain cover and bolt the cover while tightly torquing the bolts with equal force. Fit the new water pump O-ring, water pump and engine mount bracket having put sealer on the bolts threads of the bracket. Bolt and lock the timing chain tensioner then re-oil the O-ring and insert the tensioner back into the timing chain cover compartment. Match-mark the crankshaft pulley/vibration damper and apply a new chain by rotating the engine clockwise until the plunger applies tension to the timing chain. Turn the engine over several revolutions to get the number one piston at the top dead center and ensure that timing marks are in position. This leaves the rest of the installation as the mirror opposite of removal.

The timing system is intricate and, if the workforce gets it wrong, there will be severe damages on the engine; thus, it is advisable to undertake this procedure by experienced personnel and seek the service of an expert, especially if there is a concern. Scaffolding and other special tools are needed, that is why before starting working it is better to read through the whole procedure and collect all needed equipment and tools. First, remove the connection on the negative terminal among the battery, drive belt, and alternator; second, remove the windshield washer reservoir and unlatch the valve cover. With the parking brake engaged and the car firmly supported by the jack stands remove the drain plug of the radiator and coolant recovery tank and drain the coolant. Just like in replacing the timing belt remove the power steering pump and reservoir assembly. As the coolant continues to drain, unbolt the power steering pump from the engine but retain the fluid lines and secure the pump to the body. Place the first piston at the top of the cylinder head, ensure that the timing marks are correctly lined up to indicate that the car is at the top dead centre on the compression stroke. Take off the crankshaft pulley/vibration damper and keep the TO on TDC with the help of an engine support or by using a floor jack. Take out the passenger side engine mount, drive belt tensioner, engine mount bracket, crankshaft position sensor in the timing chain cover and then take out the water pump and cut the connection of the power steering pressure switch. Pull the timing chain tensioner out of the way, undo the fasteners of the timing chain cover, and pop it off of the engine. Pull the reluctor ring on the crankshaft down and withdraw it along with pulling the rear timing chain tensioner/chain guide and the timing chain along with the crankshaft sprocket up and out of the camshaft sprockets. Peep all accessories to see their state of wear and tear and ensure the timing chain has loose pins or cracks and or wear on the sprockets. Take out any signs of the old sealant from the timing chain cover and the mating surfaces, and insert the camshaft sprockets back in their initial places, use the main thread lock to the bolts. Synchronize the camshaft to point the TDC indication, fit the crankshaft timing chain idler, loop the timing over the crankshaft sprocket with the TDC No.1 colored link on it. Place the timing chain in the fixed guide and around the camshaft wheels and ensure that the colored tabs are in the right position. Lose tension in the timing chain, put the timing chain tensioner pivot arm/chain guide on, and check that the number one piston is still at TDC. Place the crankshaft position sensor reluctor ring, seal the timing chain cover surfaces with RTV sealant and bolt on the cover, uniformly tightening all the bolts to the specified torque. Fit the water pump and the engine mount bracket with the correct type of sealant applied and then reset/re-f Federal No. 45 lock the timing chain tensioner. Lubricate the tensioner O-ring and fit it on the timing chain cover then, the crank shaft pulley/vibration damper. Turn the engine a little clockwise to slightly increase the tension on the timing chain through the plunger. Last but not least, turn the engine several turns and set the number one piston at TDC realizing that all the timing marks are correct; if you experience any drag while turning the crankshaft, do not continue and ascertain that there is something wrong with the subsequent timing belt. The continues part of the installation is done in the reverse order to the removal.