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Do-It-Yourself Projects
Perfect Timing
By Mike Bumbeck /autoMedia.com
Printable version
Degree of DifficultyDifficult
Difficult
Estimated Time300 minutes
300 minutes
Step 1 - Getting down to the timing chains first requires removal of everything in the way of the timing chain cover. This includes but is not limited to radiators, air conditioning compressors, and alternators. Set the engine to top dead center and use an impact wrench to remove the crankshaft pulley bolt and pulley remover to remove the pulley itself.
Reaching the timing chains requires removing everything in the way of the timing chain cover.
Step 2 - Remove all the bolts holding on the timing cover. Removal of the oil pan may be required. If the cover remains stubborn use a rubber mallet to tap loose the gasket's grip on the engine block. Tip: Timing cover bolts are of specific lengths. Keep them in their respective holes for easy reassembly.
Remove all the bolts holding on the timing cover.
Step 3 - Here the engine is at top dead center. Note bright links on the timing chain. The bright links line up with corresponding marks on the crankshaft and camshaft gears when the engine is at top dead center. Keep the engine at top dead center while removing and installing timing chains.
Keep the engine at top dead center while removing and installing timing chains.
Step 4 - Remove the camshaft bolt making sure not to move the camshaft or engine from top dead center. Impact wrenches work very well for removing bolts. Remove the timing chain set as a unit. Be careful not to lose the crankshaft keys.
Remove the camshaft bolt  and timing chain set.
Step 5 - This timing chain uses a tensioner and guide. Tensioners often operate via oil pressure and may require pre-oiling. Use a bit of bailing wire to hold the tensioner in place while installing the chain. Note the guide pin position on the camshaft and crankshaft key position at 12 o'clock.
Use a bit of bailing wire to hold tensioner in place while installing the chain.
Step 6 - Align the gear timing marks and bright links on the new timing set before installation. Install the new timing set and button everything back up. Use a new crankshaft seal and new gaskets. Install all bolts to correct torque values. Model specific information and torque values are in the vehicle service manual.
Align the gear timing marks and bright links on the new timing set before installation. Complete installation.
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