Timing Drive Components: Removal
NOTE:
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan may cause engine failure.
- 1.
Remove the engine front cover. For additional information, refer to Engine Front Cover .
- 2.
Rotate the crankshaft clockwise and align the timing marks on the Variable Camshaft Timing (VCT) assemblies as shown.
- 3.NOTE: The Camshaft Holding Tool will hold the camshafts in the Top Dead Center (TDC) position.
Install the Camshaft Holding Tool onto the flats of the LH camshafts.
- 4.NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC position.
Install the Camshaft Holding Tool onto the flats of the RH camshafts.
NOTE:
The following 3 steps are for primary timing chains when the colored links are not visible.
- 7.
Mark the timing chain link that aligns with the timing mark on the RH intake VCT assembly as shown.
- 8.
Mark the timing chain link that aligns with the timing mark on the LH intake VCT assembly as shown.
- 9.NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
Mark the 2 timing chain links that align with the timing mark on the crankshaft sprocket as shown.
- 16.
Compress the LH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.
- 17.NOTE: The VCT bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.
Remove and discard the LH VCT assembly bolt and the LH exhaust camshaft sprocket bolt.
- Remove the LH VCT assembly, secondary timing chain and the LH exhaust camshaft sprocket as an assembly.
- 18.NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
Remove the 2 bolts and the LH secondary timing chain tensioner.
- 19.
Compress the RH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.
- 20.NOTE: The VCT bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.
Remove and discard the RH VCT assembly bolt and the RH exhaust camshaft sprocket bolt.
- Remove the RH VCT assembly, secondary timing chain and the RH exhaust camshaft sprocket as an assembly.
- 21.NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
Remove the 2 bolts and the RH secondary timing chain tensioner.