Scion 13507-28010 Chain Sub-Assy

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For this procedure, special tools are needed; therefore, it is appropriate to read through the last paragraph and then gather the correct tools and equipment. Initially, you must remove the cable on the negative terminal of the 12v battery while reconnecting the two in the course of the initialization process afterwards. For the year 2009 and down to prior year models, you have to take off the drive belt; unbolt and then fasten the brake fluid reserve even if the hoses have not been disconnected and then the final move will be to take away the top from the valve. Having set the parking brake, shifted into Park and placed the gear lever, first loosen the lug nuts of the right front wheel, then jack up the automobile and replace the wheel with jackstands. Depending on the model year, the necessary engine bottom covers, then to the cooling system, then to the air cleaner intake and the windshield washer reservoir from the vehicle should be removed. Continue to the removal of the water pump, disconnect and mark the wiring connectors, and depressuring switch relay valve. Place the car on a rise fitted with a floor jack and raise the engine one inch then, remove the engine mount and bracket. Err on the side of caution, those are the crankshaft position sensor, camshaft timing oil control valve assembly and ensure the number one piston is on the compression stroke TDC. First slacken and then take off the crankshaft pulley/vibration damper bolts, timing chain cover screws and the component itself, replace two O-rings and the timing chain tensioner. Other procedures for the 2010 and later models include the removal of cowl and valve cover and the detachment of wires, as well as, the strict observation of the engine TDC before the detachment of the crankshaft vibration damper and the timing chain tensioner. Closely examine all parts of the engine and the timing chain and sprockets in particular and replace worn out or damaged parts. When installing, strip old sealant off and orient camshafts in correct position, sprockets to be bolted onto the camshafts with the use of thread lock compound. Exhaust and intake precautions; be careful not to have piston-valve interference and adjust timing marks correctly. Set in the timing chain, align the colored links and fix the timing chain cover accordingly with the help of motor vehicle sealant. To 2010 and later models: the oil pump sprockets and chain should be set to the following marks. Post installation ensure that the timing marks are in correct positions, for the reassembly process follow the reverse of the process of removal.

The initial steps include removing the engine/transaxle assembly, the drivebelt, including the drive-belt tensioner and idler pulleys, and setting the engine to TDC (Top Dead Center).

The manufacturer recommends removing the engine and transaxle assembly.

Install the other inner timing chain, aligning the yellow links with the sprocket marks.

Loop the timing chain around the crankshaft sprocket, align the No.1 colored link with the mark on the crankshaft sprocket, and install the chain and crankshaft sprocket as an assembly.

Before beginning, make sure you have the necessary special tools and equipment ready. Disconnect the battery's negative terminal and proceed to remove the drive belt, alternator, valve cover, and ABS actuator if applicable.