Primary Camshaft Chain Idler Sprocket

REMOVAL 

1. Remove the powertrain from the vehicle, separate the engine from the transmission and place the engine on a maintenance stand. Refer to REMOVAL AND INSTALLATION .
2. Remove the flexplate. Refer to FLEXPLATE, REMOVAL AND INSTALLATION .
3. Remove the timing chain cover and oil pump drive chain. Refer to CHAIN AND SPROCKETS, TIMING, REMOVAL AND INSTALLATION .
4. Remove the primary cam chain tensioner and guide. Refer to GUIDES, TIMING CHAIN, REMOVAL AND INSTALLATION .

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5. Remove the bolts (1a) and the left camshaft chain guide (1b).

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6. Remove the bolts (1a) and the right camshaft chain guide (1b).

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7. Remove the bolt (1a) and the idler sprocket bearing retaining flange (1b).

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8. Remove the bolt (1) from the crankshaft sprocket.

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9. Remove the primary chain, idler sprocket and crankshaft sprocket as an assembly (1).

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10. Remove the O-ring (1) from the crankshaft flange.

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11. Remove the rear idler sprocket bearing (1) from the hub.

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12. Remove the front idler sprocket bearing (1).

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13. Remove the crankshaft sprocket (1a) from the primary chain (1b).

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14. Remove the idler sprocket (1a) from the primary chain (1b).

INSTALLATION 

1. Install the front idler sprocket bearing.
2. Install the rear idler sprocket bearing on the hub.
3. Install a NEW  O-ring on the crankshaft flange.
4. Install the idler and crankshaft sprockets, complete with primary chain, on the engine.

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5. Install a NEW  bolt securing the crankshaft sprocket to the crankshaft and tighten to the proper torque specification. Refer to TORQUE SPECIFICATIONS .
6. Install the idler sprocket bearing retaining flange and tighten the NEW  bolt.

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7. Install the right camshaft chain guide (1a) and tighten the bolts (1b) to the proper torque specification. Refer to TORQUE SPECIFICATIONS .

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8. Install the left camshaft chain guide (1a) and tighten the bolts (1b) to the proper torque specification. Refer to TORQUE SPECIFICATIONS .
9. Install the primary camshaft chain tensioner and guide. Refer to GUIDES, TIMING CHAIN, REMOVAL AND INSTALLATION .
10. Install the oil pump drive chain and timing chain cover. Refer to CHAIN AND SPROCKETS, TIMING, REMOVAL AND INSTALLATION .
11. Install the flexplate. Refer to FLEXPLATE, REMOVAL AND INSTALLATION .
12. Remove the engine from the maintenance stand, install the transmission to the engine and install the powertrain in the vehicle. Refer to REMOVAL AND INSTALLATION .