Camshaft Synchronizer

Synchro Positioning Tool:

SPECIAL SERVICE TOOL(S)

REMOVAL
1. Rotate the crankshaft until the No.1 cylinder is at Top Dead Center (TDC) of the compression stroke.

CAUTION: Do not turn the crankshaft or camshaft during the removal and installation procedure or the fuel system timing will be out of time with the engine and possibly cause engine damage.

2. Remove the camshaft position sensor. For additional information, refer to Camshaft Position (CMP) Sensor.







3. Disconnect the Exhaust Gas Recirculation (EGR) valve vacuum hose.







4. Remove the EGR valve tube upper fitting.







5. Remove the EGR valve and adapter.
1 Remove the nut and the bolts.
2 Remove the EGR valve and adapter assembly.







6. Remove the bolt.







7. Remove the camshaft synchronizer.

NOTE: The oil pump driveshaft may come out with the camshaft synchronizer. If so, retrieve the oil pump drive shaft before proceeding.

INSTALLATION

CAUTION: The Syncro Positioning Tool must be obtained prior to installation of the new camshaft synchronizer assembly. Failure to follow this procedure will result in the fuel system being out of time with the engine, possibly causing engine damage.







1. Install the Syncro Positioning Tool on the camshaft synchronizer by rotating the tool until it engages the notch in the camshaft synchronizer housing.

CAUTION: A Syncro Positioning Tool must be used during the installation of the new synchronizer assembly. Failure to follow this procedure will result in the fuel system being out of time with the engine, possibly causing engine damage.







2. Install the camshaft synchronizer housing assembly so the arrow on the synchronizer alignment tool is 54 degrees from the centerline of the engine.

NOTE: During installation, the arrow on the synchronizer alignment tool will rotate clockwise as the gears engage.







3. Install the bolt and remove the Syncro Positioning Tool.

NOTE: Do not remove the Syncro Positioning Tool until the bolt is tightened.







4. Install the EGR valve and adapter assembly.
1 Position the EGR adapter gasket.
2 Position the EGR valve.
3 Install the bolts and the nut.

NOTE: Reuse the EGR valve adapter gasket.







5. Install the EGR valve tube upper fitting.







6. Connect the EGR valve vacuum hose.
7. Install the CMP sensor. For additional information, refer to Camshaft Position (CMP) Sensor.