OEM Chrysler LHS Cam Gear

Chrysler LHS Cam Gear Parts and Q&A

• Camshaft Gear, Driver Side
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  Q: How to Remove and Replace the Cam Gear on 3.2/3.5L Engines on Chrysler LHS?

  A:

  Drain the radiator, remove the Drive Belts and take off the crankshaft damper and Timing Belt covers as well as the timing belt for removing and changing the camshaft gear/sprocket on these engines. Do not attempt to rotate the camshafts or crankshafts when the timing belt is removed, as the engine won't start freely. After undoing or removing the camshaft sprocket bolts, the camshafts have to be re-timed and you should not reuse the bolts. Place a 36 mm (1 7/16 inch) box wrench on the camshaft sprocket to secure it, then use a socket to unscrew and remove the bolt and washer; lifting that section of the engine may sometimes help because the bolts are so long (213 mm (8 3/8 inch) for the right and 255 mm (10.0 inch) for the left). Remove the camshaft sprocket, making sure it aligns properly with the engine, being sure it is timed correctly. To time the engine, connect the oil pump sprocket at the top dead center on the housing and then use a dial indicator in cylinder number 1 to see if it is at TDC. Using a crankshaft, align the piston on TDC and next, put in Special Tools 6642 into the rear of every cylinder head. With a gentle pull, adjust the tensioner in a vice and add the locking pin before setting aside the tensioner so the plunger is facing up. Attach both sprockets to the camshafts using new bolts: 255 mm (10 inch) for the left and 213 mm (8 3/8 inch) for the right, so the sprocket marks sit between the cover marks. Adjust the timing belt clockwise in order to fit it around the tensioner pulley, making sure there is tension as you put it on. Slide the tensioner into the housing and tighten to 28 Nm or 250 in. lbs., then pull the retaining pin so the tensioner extends out. Place the camshaft sprocket hex inside the number 1 piston and tighten the camshaft bolts to 75 ft. lb. for the right and 85 ft. lb. for the left, each with a 90° turn after you reach 102 Nm and 115 Nm respectively. First, take off the dial indicator, place the new spark plug and lastly, remove the alignment Special Tools 6642. Cover your cams and O-rings, secure all the fastening bolts at 28 Nm (250 in-lbs), then install the remaining covers, the crankshaft damper and the other drive belts. After filling the cooling system, begin the engine and let it run without moving for about 1 minute. If you can hear a strong noise coming from the timing belt or tensioner, air may be inside the tensioner; run the engine at 1600-2000 RPM for 10 minutes with a DRB III to remove the air. In case air is present, the tensioner will feel spongy and whistle, but these symptoms should go away after your engine has run for 15 minutes or less.