Nissan 13024-7Y000 Sprocket-Camshaft

Caution is advised as the timing system is complex, and mistakes can lead to severe engine damage; only highly experienced individuals should attempt this procedure, and if unsure, consulting an expert is recommended. It is generally easier to remove the engine for this procedure, although servicing the timing chain assembly can be done with the engine in the vehicle. Begin by relieving the fuel system pressure, positioning the engine at TDC for cylinder number one, and disconnecting the negative battery cable. Remove the coolant reservoir, alternator and bracket, and valve cover, then support the engine from above. Proceed to remove the oil pan and strainer, disconnect the electrical connector for the IVT control solenoid, and remove the bolts retaining the IVT/camshaft sprocket cover. Use a sharp tool to cut the RTV sealant and remove the upper chain guide, ensuring the camshaft sprockets are aligned at TDC number 1. Remove the crankshaft pulley without allowing it to turn, then take off the timing chain cover, tensioner, and timing chain. If the chain is being removed for camshaft or cylinder head work, skip the remaining steps. Inspect the camshaft, idler, and crankshaft sprockets for wear, as well as the chains and chain guides. For installation, use new bolts for the balance shaft unit and ensure proper alignment of the balance shaft chain with the crankshaft sprocket. Install the timing chain, guides, and tensioner, checking alignment marks throughout the process. Apply RTV sealant to the timing chain cover and IVT/camshaft sprocket cover before reinstalling them, tightening bolts in the correct sequence. Finally, rotate the crankshaft by hand through at least two full revolutions to check for any resistance, indicating potential issues, and reconnect the battery to perform necessary re-learn procedures.

To the above components, you should begin by disconnecting the cable from the negative terminal of battery and expel all the fluid in the cooling system. Release the lugs nuts of the right front wheel then jack up the front part of the car placing jack stands and engage the parking brake. Cinch the splash shield of the right front wheel and separate the inner fenderwell of the wheel. Then, all the drivebelts have to be detached along with the dipstick pan, and the cooling system should be drained, as well. Pull out the spark plugs and bring Number one piston at the top dead centre on the compression stroke. Remove the radiator hose and bypass hose from the thermostat housing also remove the water pump pulley. Removed the AC compressor idler pulley and bracket by loosening the three bolts and then removed the crankshaft pulley making sure the crankshaft is not turning. Check on the availability of the belts, in this case, a new factory belt should have three white markings of the alignment of the camshaft and crankshaft timing marks, while the aftermarket belts may differ. If the tensioner was removed, replace it into position and check and confirm that the spring was correctly positioned. Timing belt installation in advance is preparing by tightening the tensioner clockwise and partially tightening the lock nut. Replace the timing belt with the tightened marks of the belt facing the sprockets' corresponding marks while following a counterclockwise rotation without any looseness. Release air from the dead side of the belt, loosen the tensioner lock nut, and make the tensioner to take all the free play before tightening lock nut. Ensure all time marks are set properly, rotate the crankshaft clockwise and take the engine through two complete revolutions to bring no. 1 piston to TDC. Check the belt deflection approximately half way between the front and rear camshaft sprockets and that it is between 11-16mm. If the deflection is different from that specified, then one will just have to tweak with the tensioner. Check using a feeler gauge the tensioner pulley and tighten the tensioner locking nut with the tensioner in this position. After withdrawing the feeler gauge let the crankshaft rotate two times and bring the number one piston back to TDC and check the belt tension and align it again if required. Last but not the least; replace all parts that were disassembled and could not be cleaned.