Camshaft Gear/Sprocket: Service and Repair

VTC Actuator, Exhaust Camshaft Sprocket Replacement

Removal

1. Remove the cam chain.
2. Hold the camshaft with an open-end wrench, then loosen the variable valve timing control (VTC) actuator mounting bolt and exhaust camshaft sprocket mounting bolt.





3. If the VTC actuator is reused, do these steps.

-1 Remove the intake camshaft, and seal the advance holes and retard holes in the No. 1 camshaft journal with tape.
-2 Punch a hole in the tape over one of the advance holes.
-3 Apply air to the advance hole to release the lock.
-4 Remove the tape from the No. 1 camshaft journal.

4. Remove the VTC actuator and exhaust camshaft sprocket.

Installation

1. Install the VTC actuator and exhaust camshaft sprocket.

NOTE: Installing the VTC actuator in the unlock position.

2. Apply new engine oil to the threads of the VTC actuator mounting bolt and exhaust camshaft mounting bolt, then install them.
3. Hold the camshaft with an open-end wrench, then tighten the mounting bolts.





4. Hold the camshaft with an open-end wrench, and turn the VTC actuator clockwise until you hear it click. Make sure to lock the VTC actuator by turning it.
5. Install the cam chain.