Camshaft Timing Drive Components Clean and Inspect
Camshaft Timing Drive Components Cleaning and InspectionCleaning Procedure
1. Clean all the following components with solvent:
^ Camshaft sprockets
^ Intermediate sprocket Crankshaft sprocket Primary timing chain Secondary timing chains Primary timing chain guide Secondary timing chain guides Primary timing chain shoe
^ Secondary timing chain shoes
^ Primary timing chain tensioner
^ Secondary timing chain tensioners
^ Timing component fastening bolts
Caution: Refer to Safety Glasses Caution in Service Precautions.
2. Dry the timing components with compressed air.
Visual Inspection
Camshaft Sprockets
1. Inspect the front of the left exhaust and intake camshaft sprockets for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole damage (2)
^ Mounting bolt hole damage (3)
2. Inspect the back of the left exhaust and intake camshaft sprockets for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole (2)
^ Camshaft seating/sealing inner hub flange damage (3)
3. Inspect the front of the right exhaust camshaft sprocket for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole damage (2)
^ Mounting bolt hole damage (3)
^ Camshaft position sensing ring damage (4)
4. Inspect the back of the right exhaust camshaft sprocket for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole (2)
^ Camshaft seating/sealing inner hub flange damage (3)
5. inspect the front of the right intake camshaft sprocket for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole damage (2)
^ Mounting bolt hole damage (3)
6. Inspect the back of the right intake camshaft sprocket for the following:
^ Sprocket damage (1)
^ Camshaft locating pin hole (2)
^ Camshaft seating/sealing inner hub flange damage (3)
7. Replace a damaged camshaft position actuator.
Intermediate Sprocket
1. Inspect the front of the intermediate sprocket for the following:
^ Sprocket damage (1)
^ Bearing bore damage (2)
^ Thrust surface damage (3)
2. Inspect the back of the intermediate sprocket for the following:
^ Sprocket damage (1)
^ Bearing bore damage (2)
^ Thrust surface damage (3)
3. Replace a damaged intermediate sprocket.
Crankshaft Sprocket
1. Inspect the intermediate sprocket for the following:
^ Sprocket damage (1)
^ Bore damage (2)
^ Keyway damage (3)
2. Replace a damaged crankshaft sprocket.