Installing a Camshaft Gear in Five Easy Steps
Every vehicle relies on its camshaft for proper timing when it comes to opening both the intake and exhaust valves in the engine. A broken camshaft would not only lead to poor engine performance but could also lead to irreparable engine damage. When diagnosing camshaft problems, it's important to take a look at the camshaft gear as well. Since it directly affects the camshaft itself, this gear needs to be in perfect working condition at all times. Installing a replacement shouldn't be too hard and would only require a couple of basic tools and an hour to finish.
Required skill level: Intermediate
Needed tools and materials
Disconnect the negative battery terminal from the car battery to avoid any accidents while working on the camshaft gear. Remove the valve and timing belt covers in order to access the camshaft.
Top dead center
The engine needs to be set to its top dead center position (or TDC) before the camshaft gear can be replaced. To do this, simply rotate the crankshaft clockwise with the help of a socket wrench. Find the TDC mark on the crankshaft pulley and align it with the TDC mark on the oil pump. Most vehicle manuals would have a guide on how to find the TDC as well.
Remember to mark the timing belt
Find the timing belt tensioner and turn it clockwise with a socket wrench in order to remove the tension from the belt itself. Use a white marker to mark the belt's direction of rotation before removing it from its pulleys.
Install the camshaft gear
Take out the camshaft retaining bolt in order to remove the camshaft gear and key from its place. Next, simply install the new camshaft gear and its key into place and tighten the retaining bolt afterwards. For most vehicles, the retaining bolt would need to be tightened to a certain degree. Check the vehicle's manual for proper torque requirements.
Once the retaining bolt is in place, turn the crankshaft clockwise and align the TDC as was done earlier. Next, install the timing belt back into place and tighten the tensioner with a torque wrench. Make sure everything is fitted properly and simply replace the covers and reattach the battery cables to finish up.