Camshaft Gear/Sprocket: Service and Repair
Intake Camshaft Sprocket Replacement^ Tools Required
- EN-44217-45 Chain Holding Tool
- J 44E17 Timing Chain Retention Tool
- J 44221 Camshaft Holding Tool
- J 45059 Angle Meter
Removal Procedure
1. Remove the camshaft cover.
2. Rotate the crankshaft in the engine rotational direction clockwise, until the #1 piston is at Top Dead Center (TDC) on the compression stroke. The word Delphi on the exhaust camshaft position actuator will be parallel with the cylinder head to cam cover mating surface.
3. Using the timing mark on the intake camshaft sprocket as a reference, make a mark on the timing chain link adjacent to it.
Caution: Refer to Camshaft Holding Tool Caution in Service Precautions.
4. Install the J 44221 to the rear of the camshafts.
5. Complete the following in order to install the 44217 (1) and EN-44217-45 (1).
5.1. Install the hook portion of the timing chain retention tools into one of the timing chain links near the timing chain shoe on both sides of the engine.
5.2. Tighten the wing-nuts.
5.3. Ensure the hooks are still in one of the links and the gage blocks of the tool are firmly in place on the edge of the head.
6. Remove the intake camshaft sprocket bolt. Discard the bolt.
7. Remove the intake camshaft sprocket.
8. Clean and inspect the sprocket.
Installation Procedure
1. Install the intake camshaft sprocket into the timing chain.
Aligning the marked link (1) on the timing chain with the timing mark on the intake camshaft sprocket.
Important:
^ To aid in aligning the sprocket to the camshaft, use a 25 mm (1 inch) wrench on the hex of the camshaft to rotate
^ Ensure the alignment pin is properly engaged with the camshaft
2. Install the intake camshaft sprocket onto the intake camshaft.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the new intake camshaft sprocket bolt.
3.1. Tighten the intake camshaft sprocket bolt to 20 Nm (15 ft. lbs.).
3.2. Use the J 45059 to rotate the intake camshaft sprocket bolt an additional 100 degrees.
4. Remove the J44217 (1) and EN-44217-45 (1).
5. Remove the J 44221 from the camshafts.
6. Install the camshaft cover.