OEM Jeep Cherokee Timing Chain

Jeep Cherokee Timing Chain Parts and Q&A

• Timing Chain
  J3242300
  Q: How Does a Timing Chain Tensioner Improve Engine Performance and How to Its Replacement on Jeep Cherokee?

  A:

  With a timing chain tensioner, the chain drive system reduces noise and makes the chain last longer, responding to wear and temperature changes in the valve train for greater engine performance. First, disconnect the negative cable from the battery, move on to remove the fan and shroud, remove the serpentine Drive Belt, take out the vibration damper and finally uncover the timing case. Adjust the crankshaft until you see that the "O" timing mark is lined up with the timing mark on the camshaft and then eliminate the oil slinger from the crankshaft. After that, remove the camshaft retaining bolt and take out the whole assembly of sprockets and chain. When you replace the timing chain tensioner, the Oil Pan must first be taken out. When installing, turn the tensioner lever to the unlocked spot, draw the tensioner block towards the lever, grasp the block and change the lever to lock it into place. Coat the crankshaft keyway with Mopar Silicone Rubber Adhesive Sealant, slide the key into place and put in the crankshaft, camshaft sprockets and timing chain with the timing marks lined up. Screw the snap ring onto the camshaft sprocket, then install the retaining bolt with washer and tighten them together to 108 Nm (80 ft. lbs.) torque. After installation, turn the crankshaft and line up the cam shaft's timing mark; then, check by counting 20 chain pins between the timing marks of the sprockets. Make sure the chain tensioner lever is turned to the unlocked setting, insert the oil slinger, reopen and insert the oil seal into the timing case cover and fit on the timing case cover and gasket. When you have the key in the crankshaft keyway, place the vibration damper, washer and bolt under the head, lubricate them and tighten the bolt to 108 Nm (80 ft. lbs.) torque. After that, put back the fan and shroud and join the negative battery cable to the battery.
• Timing Chain
  53020444
  Q: How to Maintain and Fix a Timing Chain on Jeep Cherokee?

  A:

  Start by disconnecting the battery's negative cable, removing the fan and shroud and then the Drive Belt, the vibration damper and the timing case cover. Turn the Crankshaft so that the "0" on the crankshaft lines up with the camshaft sprocket timing mark. After that, remove the oil slinger from the crankshaft, then remove the bolt and washer from the camshaft sprocket. Remove the assembly of the crankshaft sprocket, camshaft sprocket and timing chain all at once. Before leaving the timing chain installed, confirm the supporting timing marks on the crankshaft and camshaft sprockets are aligned properly or the chain should be replaced if it deflects over 12.7 mm or 1/2 inch. As soon as the timing marks are in line, add the Mopar Silicone Rubber Adhesive to the keyway and press the key into place. Once the key is placed, attach the assembly to the crankshaft and camshaft, fasten the camshaft sprocket bolt and washer and torque the bolt to 68 Nm (50 ft. lbs.). After finishing the installation, rotate the crankshaft for two full revolutions to line up the camshaft and crankshaft timing marks. Place the crankshaft oil slinger, remove the damaged oil seal, fit a new oil seal in the timing case cover and secure both together with the gasket. Once you've placed the key in the crankshaft, next put in the vibration damper, then the serpentine belt, fan, hub assembly and finally the shroud. In the last step, link the negative cable to the battery once more.