VTC Actuator, Exhaust Camshaft Sprocket Replacement

VTC Actuator, Exhaust Camshaft Sprocket Replacement

Removal

1. Remove the cam chain. Cam Chain Removal

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

3. If the VTC actuator is reused, do the following steps.
-1 Remove the intake camshaft, and seal the advance holes and retard holes in the No 1 camshaft journal with tape.. VTC Actuator Inspection
-2 Punch a hole in the tape over one of the advance holes. VTC Actuator Inspection
-3 Apply air to the advance hole to release the lock. VTC Actuator Inspection
-4 Remove the tape and adhesive residue from the camshaft journal.

4. Remove the VTC actuator and exhaust camshaft sprocket.






Installation

1. Install the VTC actuator and the exhaust camshaft sprocket.
NOTE: Install the VTC actuator in the unlock position.

2. Apply engine oil to the threads of the VTC actuator mounting bolt and the exhaust camshaft mounting bolt, then install them.

3. Hold the camshaft with an open-end wrench, then tighten the bolts.

Specified Torque
VTC Actuator Mounting Bolt:
12 x 1.25 mm
113 N-m (11.5 kgf-m, 83 lbf-ft)
Exhaust Camshaft Sprocket Mounting Bolt:
10 x 1.25 mm
72 N-m (7.3 kgf-m, 53 lbf-ft)

4. Hold the camshaft, 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. Cam Chain Installation