OEM 2008 Jeep Liberty Timing Chain

2008 Jeep Liberty Timing Chain Parts and Q&A

• Q: How to Remove and Replace a Timing Chain on 2008 Jeep Liberty?

  A: Compress the secondary chain tensioner piston gently, so the piston step matches the tensioner body, then release the ratchet pawl and slightly push the ratchet around 2 mm from the tensioner body. Put Tensioner pin 8514 into the front of the tensioner and slowly open the vise to move the piston spring force to the lock pin. Set the primary chain tensioner on the oil pump and tighten the bolts from the bracket into the lower two holes to 28 Nm. Add the right side chain tensioner arm with a Torx bolt, tightening it to 28 Nm, afterward put on the left side chain guide and tighten its bolts to the same figure. Then, mount your left chain tensioner arm by tightening the Torx bolt to 28 Nm and repeat the process on the right side. Hang both secondary chains on the idler sprocket, so two plated links appear in the lower openings and install the Secondary Camshaft Chain Holder 8429 to hold everything in position. Slide the primary chain so that the double plated links on the chain are at the 12 o'clock position on the idler sprocket and the single plated link is at 6 o'clock on the crankshaft sprocket. First, spray engine oil on the idler shaft and bushings, next put all the chains, crankshaft sprocket and idler sprocket together in one assembly, making sure both secondary chains pass through the openings in the engine and cylinder head and secure them with an elastic strap to keep tension. Put the idler sprocket onto the ball race with the timing mark wanted, push it in, add oil to the washer and fasten the retaining bolt using 34 Nm of torque. Turn the camshafts slightly during sprocket installation to place the "L" and "R" dots of the sprockets into position with the links on the chain. Remove oil around the camshaft sprocket bolts before attaching to ensure the bolts are not too tight while attaching both sprockets to their camshaft. Look at all the sprockets, then make sure every link on the plate is aligned with the marks on them and that the "V6" on the camshaft sprockets is facing up at 12 o'clock. Secure both secondary chain tensioners and tighten their bolts to 28 Nm and thereafter, take out the locking pins and don't manually extend the tensioners to control overtightening. Tighten the bolts holding the left and right camshaft sprockets onto the engine with a torque of 122 Nm when using Spanner Wrench 6958 and Adaptor Pins 8346. After twisting the engine two times completely, check the position of the timing marks against the manual. Make sure to dab engine oil everywhere on all three chains, look at the idler gear end play with a 0.10 to 0.25 mm range and if the play is out of the required range, change it with the right idler gear. After installing the timing chain cover and crankshaft damper, put on the cylinder head covers and properly cover the right threaded plug with Mopar Thread Sealant with Teflon, tighten it and verify you achieved 90 Nm. Fit the oil fill housing, add an access plug to the left cylinder head, put in the power steering pump, refill the cooling system and connect the negative cable to the battery.