OEM Chrysler Pacifica Cam Gear

Chrysler Pacifica Cam Gear Parts and Q&A

• Camshaft Gear, Driver Side
  4792025AB
  Q: How to Service and Repair Cam Gear on a 3.5L Engine on Chrysler Pacifica?

  A:

  Always confirm the 3.5L engine is not turning when the Timing Belt has been removed, as the design is not free-wheeling. To start, let the fuel pressure out and take off the front timing belt cover. Open up the crankshaft sprocket to the TDC mark pin on the oil pump housing, turn it clockwise, then place a dial indicator on the piston in number 1 cylinder to check that it's at TDC. Disconnect the Camshaft retainer/thrust plate from the back of the right cylinder head, then remove the right cylinder head cover and the whole rocker assembly. Once done, take off the Timing Belt Tensioner and timing belt and move the right camshaft back about 3 1/2 inches to reach the bolt that keeps the camshaft gear in place. Reposition the locks to keep the camshaft sprockets while removing the camshaft gear retaining bolt and washer. Both bolts should be removed; the right bolt is 213 mm (8 3/8 inch) and the left bolt is 255 mm (10.0 inch). Apply the updated camshaft sprockets on the camshafts using the latest bolts and make certain that the marks on the sprockets line up with the marks on the cover. Mount the right camshaft thrust plate, seal and torque the fasteners to 28 Nm (250 inch pounds). Connect the timing belt at the crankshaft sprocket, moving it counterclockwise and make sure there is tension on it as it goes past the tensioner pulley. Pull the reset timing belt tensioner against the belt, install it onto the pulley and tighten the bolts to 28 Nm (250 inch lbs.,) until the tensioner retaining pin can be removed. Install the dial to find where the TDC position for piston #1 is, then tighten the spark shaft hex with a 36 mm (1 7/16 inch) wrench and screw in the bolts of the camshaft with 102 Nm (75 ft. lbs.) plus 90 deg on the right and 115 Nm (85 ft. lbs.) plus 90 deg on the left. Finally, take out the dial indicator, secure the spark plug in place, take out the Special Tool 6642, set in the cam retainer/thrust plates and O-rings, put back the front timing belt cover and assemble the engine.