Question 1

How to replace the Cam Gear on Bank 2 (Left Side) Intake on Buick Enclave?

Accepted Answer

The first step in replacing the bank 2 (Left Side) intake Camshaft position actuator is to remove its corresponding left exhaust Camshaft actuator. The maintenance process starts with removing the left intake Camshaft position actuator bolt which precedes extraction of the left intake Camshaft position actuator. Verify that the new actuator has the in marking on its body because this marks it as an intake part during installation. Engine performance will remain unaffected by the correct placement of actuators during the installation process and engine codes will not trigger. The reluctor wheel on the right intake Camshaft position actuator has a unique indexing system with different alignment compared to the left one which requires proper placement at the sprocket tooth peak. The outer ring circle marker of the Camshaft position actuator should match the specific timing chain link highlighted on the left engine side. When installing the actuator bolt avoid rotating the Camshaft through the use of an open wrench on its hex-shaped Camshaft integration. Install the bolt in a loose manner then tighten it while maintaining the wrench at the Camshaft hex to avoid rotation. Install the left exhaust Camshaft actuator as the last step.

Question 2

How to replace the Cam Gear on Bank 1 (Right Side) Exhaust on Buick LaCrosse?

Accepted Answer

You need to have en 46108 Timing Chain retention tool (EN 46108) ready when replacing the camshaft position actuator on bank 1 (Right Side) exhaust. First strip out all parts including upper and lower intakes along with the camshaft cover. Eliminate both camshaft position sensors and the intake camshaft position actuator solenoid. Move the crankshaft balancer forward and press the crankshaft once to place both exhaust camshafts equally between their intake and exhaust positions. You should use an open-end wrench at the camshaft hex point to prevent turning the camshaft while you unscrew the camshaft position actuator bolt. Fasten the en 46108 Timing Chain retainer as you push it into the correct position and mark the chain position for future assembly reference. Take out the bolt and actuator of the right exhaust camshaft position actuator. Timing chain and camshaft position actuator should line up their marks before loosely installing the camshaft actuator bolt and removing en 46108. First tighten the camshaft position actuator while also fitting the intake camshaft position actuator solenoid and camshaft sensors. After you put back the camshaft cover you should connect both the intake manifolds together.

Question 3

How to replace the exhaust Cam Gear actuator on Buick Rainier?

Accepted Answer

Start replacement of the exhaust camshaft position actuator by taking off the camshaft cover. Align the word delphi from the exhaust camshaft position actuator with the Cylinder Head to cam cover mating surface when the engine reaches its parallel position. Start by using the point of reference on the exhaust camshaft position actuator sprocket for marking the associated Timing Chain link. Secure the Timing Chain retention tool (J 44217) by inserting the hook hooks into Timing Chain links around the shoes on engine sides prior to tightening the wingnuts until the hooks remain secure with gauge blocks attached to each head edge. The procedure requires removal of both the exhaust camshaft position actuator bolt followed by the separation of the actuator itself. When installing the exhaust camshaft actuator place it within the Timing Chain system while guiding its marked link to match the sprocket timing mark along with proper alignment pin insertion. The installation of the actuator must follow proper location placement for fasteners while the actuator needs to be fully advanced during installation to safeguard the engine from damage. Torque the camshaft actuator bolt with a clockwise rotation relatively to the camshaft until secure. You must first tighten the exhaust camshaft actuator bolt to 25 nm (18 lb ft) before using the torque angle meter (J 36660-A) to finish turning it by 135 degrees. After removing the Timing Chain retention tool (J 44217) users must install the top chain guide then apply threadlocker to the top chain guide bolt threads before securing the bolts to 10 nm (89 lb in) torque specification. Finally, reinstall the camshaft cover.

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