Jeep Compass 2007-2009
Jeep Patriot 2007-2009
- Inspect the camshaft bearing journals for damage. If journals are damaged, check the cylinder head for damage. Also check the cylinder head oil holes for clogging.
- Check the cam lobe and bearing surfaces for abnormal wear and damage. Replace the camshaft if defective.
- Measure the camshaft end play as follows:
Removal & Installation
Jeep Compass 2007-2009
Jeep Patriot 2007-2009
- Before servicing the vehicle, refer to the Precautions Section.
- Remove the engine appearance cover.
- Disconnect the negative battery cable.
- Drain the cooling system.
- Drain the engine oil.
- Disconnect the ignition coil electrical connector.
- Disconnect the Positive Crankcase Valve (PCV) and make-up air hoses from the cylinder head cover.
- Remove the cylinder head cover bolts and cylinder head cover.
- Remove the right side engine splash shield.
Rotate the engine to Top Dead Center (TDC).
- Make sure camshaft timing marks are aligned.
Mark the chain link corresponding to timing marks with a paint marker.
- Remove the timing tensioner plug from the front cover.
Insert a small Allen wrench through the timing tensioner plug hole and lift the ratchet upward to release the tensioner and push the Allen wrench inward. Leave the Allen wrench installed during the remainder of this procedure.
- Insert Special Tool 9701 Locking Wedge between the camshaft phasers.
Lightly tap Special Tool 9701 into place with a suitable tool until it will no longer sink down.
- Using a permanent ink or paint marker, identify the location and position on each camshaft bearing cap.
- Remove the camshaft front bearing cap.
Slowly remove the remaining intake and exhaust camshafts cap bolts one turn at a time.
NOTEKeep all of the valvetrain components in order for reassembly.
- Remove the intake camshaft by lifting the rear of the camshaft upward.
Rotate the camshaft while lifting it out of the front bearing cradle.
- Lift the timing chain off of the sprocket.
- Remove the exhaust camshaft.
- Secure the timing chain with wire so it does not fall into the timing chain cover.
- Remove the valve lifters.
- Apply a light coat of clean engine oil to the valve lifters.
- Install the lifters into their original positions in the cylinder head.
- The camshaft cap is numbered 1, 2, or 3. This corresponds to the select fit bearing to use.
- Install the corresponding select fit bearing.
- Apply a light coat of clean engine oil to all of the camshaft journals.
- Install the camshaft phasers on the camshafts, if removed.
- Install the timing chain onto exhaust camshaft sprocket, making sure that the timing marks on the sprocket and the painted chain link are aligned.
- Position the exhaust camshaft on the bearing journals in the cylinder head.
Align the exhaust camshaft timing mark so it is parallel to the cylinder head, as shown.
- Install the intake camshaft by raising the rear of the camshaft upward and rolling the sprocket into the chain.
- Align the timing marks on the intake cam sprocket with the painted chain link.
- Position the intake camshaft into the bearing journals in the cylinder head.
Verify that the timing marks are aligned on both camshafts and that the timing marks are parallel with the cylinder head.
WARNINGInstall the front intake and exhaust camshaft bearing cap last. Ensure that the dowels are seated and follow the torque sequence or damage to the engine could result.
NOTEIf the front camshaft bearing cap is broken, the cylinder head MUST be replaced.
NOTEVerify that the exhaust bearing shells are correctly installed, and the dowels are seated in the head, prior to tightening the bolts.
Install the intake and exhaust camshaft bearing caps and slowly tighten bolts to 85 inch lbs. (10 Nm) in the sequence shown.
Install the front intake and exhaust bearing cap and tighten bolts to 18 ft. lbs. (25 Nm). in the sequence shown.
- Verify that all of the timing marks are aligned.
- Remove the Allen wrench from the timing chain tensioner.
- Remove Special Tool 9701 Locking Wedge by pulling straight up on the pull rope.
- Apply MOPAR® thread sealant to the timing tensioner plug and install.
- Rotate the crankshaft CLOCKWISE two complete revolutions until the crankshaft is repositioned at the TDC position.
- Verify that the camshaft timing marks (3) are in the proper position and in line with the cylinder head cover sealing surface. If the marks do not line up, the timing chain is not correctly installed.
- Install the right engine splash shield.
- Clean any old RTV from the cylinder head cover gasket.
Inspect the cylinder head cover gaskets for damage. If they are not damaged, they may be reinstalled. Otherwise they must be replaced.
Install the studs in the cylinder head cover as shown.
- Clean all RTV from the cylinder head.
Apply a dot of MOPAR® engine sealant RTV or equivalent to the cylinder head front cover T-joint.
Install the cylinder head cover and tighten the bolts in sequence as follows:
- Tighten all bolts in sequence to 44 inch lbs. (5 Nm).
- Tighten all bolts in sequence to 90 inch lbs. (10 Nm).
- Connect the ignition coil electrical connectors.
- Connect the PCV and make-up air hoses.
- Refill the cooling system to the correct level.
- Refill the engine with oil to the correct level.
- Install the engine appearance cover.
- Connect the negative battery cable.
- Operate the engine until it reaches normal operating temperature. Check the oil and cooling systems for correct fluid levels.