Variable Camshaft Timing (VCT) Unit: Installation
WARNING: This page is about a different variant/trim than selected.
Left hand units
- Position the secondary timing chain onto the VCT assemblies. Align the colored links on the secondary timing chain with the timing marks on the VCT assemblies as shown in the illustration.
- The timing mark on the intake VCT assembly should align between the 2 consecutive colored links.
- The timing mark on the exhaust VCT assembly should align with the single colored link.
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- Install the VCT unit and the secondary timing chain onto the camshafts. The timing mark on the exhaust VCT assembly should be approximately in the 12 o'clock position.
- Using a wrench on the flats of the camshaft, have an assistant rotate the intake camshaft counterclockwise until the locating pin of the VCT engages into the end of the camshaft.
- Slide the VCT assemblies onto the camshafts until they are fully seated.
- Rotate the secondary timing chain tensioner 90 degrees so the ramped area is facing forward.
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NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolts.
Install the new intake and exhaust VCT assembly bolts.
Torque: Stage 1: 133 lb.in (15 Nm) Stage 2: 90 deg.
- Install the LH timing chain. Refer to: Timing Chain .
Right hand units
- Position the secondary timing chain onto the VCT assemblies. Align the colored links on the secondary timing chain with the timing marks on the VCT assemblies as shown in the illustration.
- The timing mark on the intake VCT assembly should align between the 2 consecutive colored links.
- The timing mark on the exhaust VCT assembly should align with the single colored link.
-
- Install the VCT unit and the secondary timing chain onto the camshafts. The timing mark on the exhaust VCT assembly should be approximately in the 12 o'clock position.
- Using a wrench on the flats of the camshaft, have an assistant rotate the intake camshaft counterclockwise until the locating pin of the VCT engages into the end of the camshaft.
- Slide the VCT assemblies onto the camshafts until they are fully seated.
- Rotate the secondary timing chain tensioner 90 degrees so the ramped area is facing forward.
-
NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolts.
Install the new intake and exhaust VCT assembly bolts.
Torque: Stage 1: 133 lb.in (15 Nm) Stage 2: 90 deg.
- Install the RH timing chain. Refer to: Timing Chain .