Camshaft Timing Drive Components Cleaning and Inspection
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Camshaft Timing Drive Components Cleaning and Inspection
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1.
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Clean all the following components with solvent:
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Primary timing drive chain
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Primary timing drive chain shoe
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Primary timing drive chain guides
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Primary timing drive chain tensioner
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Secondary timing drive chains
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Secondary timing drive chain shoes
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Secondary timing drive chain guides
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Secondary timing drive chain tensioners
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Timing component fastening bolts
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2.
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Clean each camshaft position actuator's exterior with solvent.
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Camshaft Thrust Washers
1.
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Inspect the camshaft thrust washers for deep scoring or uneven wear (1).
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Camshaft Position Actuators
1.
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Note
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Actual camshaft position actuators may vary in appearance from the ones shown.
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Inspect the front of the exhaust camshaft position actuators for the following:
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Reluctor/sensor wheel damage (2)
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Camshaft position actuator bolt seating/sealing inner hub flange damage (3)
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2.
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Inspect the back of the exhaust camshaft position actuators for the following:
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Camshaft locating pin damage (2)
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Camshaft seating/sealing inner hub flange damage (3)
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Blockage to the oil passages (4)
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Loose or missing housing bolts (5)
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3.
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Inspect the front of the left intake camshaft position actuators for the following:
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Reluctor/sensor wheel damage (2)
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Camshaft position actuator oil control valve bolt seating/sealing inner hub flange damage (3)
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4.
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Inspect the back of the left intake camshaft position actuators for the following:
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Camshaft locating pin damage (2)
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Camshaft seating/sealing inner hub flange damage (3)
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Blockage to the oil passages (4)
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Loose or missing housing bolts (5)
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5.
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Inspect the front of the right intake camshaft position actuators for the following:
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Reluctor/sensor wheel damage (2)
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Camshaft position actuator oil control valve bolt seating/sealing inner hub flange damage (3)
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6.
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Inspect the back of the right intake camshaft position actuators for the following:
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Camshaft locating pin damage (2)
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Camshaft seating/sealing inner hub flange damage (3)
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Blockage to the oil passages (4)
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Loose or missing housing bolts (5)
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7.
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Replace a damaged camshaft position actuator.
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Camshaft Position Actuator Oil Control Valves
1.
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Inspect the camshaft position actuator oil control valves for the following:
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Blockage to the oil passage (1)
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Missing or damaged oil screen clip (2)
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Blockage or damage to the oil screen (3)
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Damage to the sealing surface for the camshaft position actuator oil control valve solenoid oil seal (4)
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Damage to the bracket (5)
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Damage to the wiring harness connection and/or terminals (6)
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2.
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Replace a damaged camshaft position actuator oil control valve.
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Left Intermediate Sprocket with Primary and Secondary Inverted Tooth (IT) Chain
1.
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Inspect the front of the left intermediate sprocket for the following:
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Damage to the primary camshaft drive chain sprocket (1)
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Damage to the hub bearing (2)-Ensure the hub bearing spins freely. If the hub bearing wobbles, is noisy, or feels rough when rotated, replace the intermediate sprocket.
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Damage to the bolt flange seating/sealing surface (3)
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2.
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Inspect the back of the left intermediate sprocket for the following:
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Damage to the left secondary camshaft drive chain sprocket (1)
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Damage to the bearing hub-to-engine block sealing surface (2)
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3.
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Replace a damaged left intermediate sprocket.
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Right Intermediate Sprocket with Primary and Secondary Inverted Tooth (IT) Chain
1.
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Inspect the front of the right intermediate sprocket for the following:
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Damage to the right secondary camshaft drive chain sprocket (1)
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Damage to the hub bearing (2)-Ensure the hub bearing spins freely. If the hub bearing wobbles, is noisy, or feels rough when rotated, replace the intermediate sprocket.
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Damage to the bolt flange seating/sealing surface (3)
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2.
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Inspect the back of the right intermediate sprocket for the following:
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Damage to the primary camshaft drive chain sprocket (1)
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Damage to the bearing hub-to-engine block sealing surface (2)
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3.
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Replace a damaged right intermediate sprocket.
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Crankshaft Sprocket with Primary Inverted Tooth (IT) Chain
1.
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Inspect the crankshaft sprocket for the following:
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2.
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Replace a damaged crankshaft sprocket.
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Secondary Timing Chains with Inverted Tooth (IT) Chain
1.
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Inspect the secondary timing chain for the following:
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Binding or worn links (1)
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2.
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Replace a damaged secondary timing chain.
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Primary Timing Chain with Inverted Tooth (IT) Chain
1.
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Inspect the primary timing chain for the following:
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Binding or worn links (1)
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2.
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Replace a damaged primary timing chain.
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Primary Timing Chain Upper Guide
1.
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Inspect the primary timing chain upper guide for the following:
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Cracked or broken guide surface (2)
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Cracked or damaged guide base (3)
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2.
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Replace a damaged primary timing chain upper guide.
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Primary Timing Chain Lower Guide
1.
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Inspect the primary timing chain lower guide for the following:
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Cracked or broken guide surface (2)
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Cracked or damaged guide base (3)
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2.
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Replace a damaged primary timing chain lower guide.
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Left Secondary Timing Chain Guide
1.
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Inspect the left secondary timing chain guides for the following:
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Cracked or broken guide surface (2)
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Cracked or damaged guide base (3)
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2.
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Replace a damaged left secondary timing chain guide.
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Right Secondary Timing Chain Guide
1.
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Inspect the right secondary timing chain guides for the following:
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Cracked or broken guide surface (2)
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Cracked or damaged guide base (3)
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2.
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Replace a damaged right secondary timing chain guide.
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Left Secondary Timing Chain Shoe
1.
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Inspect the front of the left secondary timing chain shoe for the following:
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Cracked or broken shoe surface (2)
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Cracked or damaged shoe (3)
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2.
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Inspect the back of the left secondary timing chain shoe for a damaged, worn, or missing left secondary timing chain tensioner contact pad (1).
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3.
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Replace a damaged left secondary timing chain shoe.
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Right Secondary Timing Chain Shoe
1.
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Inspect the front of the right secondary timing chain shoe for the following:
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Cracked or broken shoe surface (2)
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Cracked or damaged shoe (3)
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2.
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Inspect the back of the right secondary timing chain shoe for a damaged, worn, or missing right secondary timing chain tensioner contact pad (1).
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3.
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Replace a damaged right secondary timing chain shoe.
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Primary Timing Chain Tensioner
1.
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Inspect the primary timing chain tensioner for worn primary timing chain tensioner shoe surface (1).
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3.
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Replace a damaged primary timing chain tensioner.
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Left Secondary Timing Chain Tensioner
1.
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Inspect the left secondary timing chain tensioner for damaged plunger-to-shoe contact surface (1).
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3.
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Replace a damaged left secondary timing chain tensioner.
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Right Secondary Timing Chain Tensioner
1.
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Inspect the right secondary timing chain tensioner for damaged plunger-to-shoe contact surface (1).
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3.
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Replace a damaged right secondary timing chain tensioner.
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