OEM Chrysler Pacifica Timing Belt

Chrysler Pacifica Timing Belt Parts and Q&A

• Timing Belt
  4792353
  Q: How to Service and Repair a Timing Belt on Chrysler Pacifica?

  A:

  Remove the outer Timing Covers and turn the Crankshaft so the pointer points at the TDC mark on the oil pump, letting the camshaft sprocket timing lines line up with the inner timing cover marks which might mean another round crankshaft rotation. Take off the valve train rocker before you move on and follow the fuel pressure release process. Unhook the negative cable from the battery, remove both covers for the cylinder heads and slightly loosen the rocker assemblies. Take out the front timing belt cover and mark the way the belt runs if you plan to put it back on. Keep rotating the engine until the number on the crankshaft lines up with the TDC mark on the oil pump and the marks on both sprockets are over the marks on the cover. Take out the Timing Belt Tensioner and the belt, check the tensioner for signs of oil leakage and rotate both the pivot and bolt while they are out, doing this step. Index the tensioner plunger in a vise as you depress it into the body of the mechanism. To remove the camshaft sprocket, first release the fuel pressure, open the front timing belt cover and turn the crankshaft sprocket to the top dead center mark on the oil pump housing. To locate TDC, use a dial indicator in the number 1 cylinder. Next, take off the camshaft retainer/thrust plate from the rear of the right cylinder head, then take off the cover and rocker arm for that side. Disconnect the timing belt tensioner and timing belt, moving the right camshaft rearward roughly 3 1/2 inches to find the bolt that holds the camshaft gear in place and do not let the camshaft or journals on the cylinder head get scratched. Hold each camshaft sprocket with an adjustable 36 mm wrench, undo and remove the camshaft gear retaining bolts and then remove the sprockets. After you remove the crankshaft sprocket using Special Tool L-4407-A, check the timing belt for toughness, cracks, peeled areas, missing teeth or unusual wear. If there is any damage, replace the belt. Use Special Tool 6641 to check the depth as you install the crankshaft sprocket and then the timing belt. Screw on the camshaft sprockets onto the camshafts using new bolts so that the right side receives the right type, but do not tighten them first. Place the proper camshaft thrust plate and seal and tighten their bolts to 28 Nm. The timing belt goes on the crankshaft sprocket and is fixed around the tensioner pulley sufficiently tight while the installation is still moving counterclockwise. Install the reset timing belt tensioner, use a torque wrench set to 28 Nm tighten the bolts and remove the tensioner retaining pin. Place the number one Piston at TDC, hold the camshaft sprocket hex with a 36 mm wrench and tighten all the camshaft bolts to the correct amounts indicated. Take out the dial indicator, install the spark plug next, remove Special Tool 6642 and add the cam retainer/thrust plates and O-rings. After that, place the front timing belt cover, tighten the rocker arm assemblies, connect the cylinder head covers and reattach the black negative Battery Cable.