Timing Chain and Sprockets Installation: Installation

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Crankshaft Balancer Key

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Install the crankshaft balancer key into the crankshaft keyway.
The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.

Fig 2: Installing Crankshaft Sprocket Using J 5590

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Align the keyway of the crankshaft sprocket with the crankshaft balancer key.

CAUTION: Refer to SAFETY GLASSES CAUTION .

Use the J 5590 in order to install the crankshaft sprocket. See Special Tools .

Fig 3: Camshaft Sprocket And Camshaft Timing Chain

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Rotate the crankshaft until the crankshaft sprocket alignment mark is at the 12 o'clock position.

IMPORTANT: Install the camshaft sprocket with the alignment mark at the 6 o'clock position.

Install the camshaft sprocket and the camshaft timing chain.

Fig 4: View Of Sprockets & Chain

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Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and camshaft sprocket is aligned at the 6 o'clock position.

Fig 5: Camshaft Sprocket & Bolts

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NOTE: Refer to Fastener Notice .

IMPORTANT: Do not use a hammer to install the camshaft sprocket onto the camshaft. To do so may dislodge the expansion cup plug, camshaft rear bearing hole.

Install camshaft sprocket bolts.
Tighten: Tighten the camshaft sprocket bolts to 25 N.m (18 lb ft).

Fig 6: View Of Timing Chain Tensioner Bracket, Bolt & Shoe

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Install the timing chain tensioner bracket and bolt (227 and 228).
Tighten: Tighten the timing chain tensioner bracket bolt to 12 N.m (106 lb in).

IMPORTANT: The timing chain tensioner shoe snaps onto the tensioner bracket. Ensure that the shoe is fully seated before proceeding.

Install the timing chain tensioner shoe (229) using an upwards motion.

Fig 7: Installing Crankshaft Position Sensor Reluctor Ring

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Install the crankshaft position sensor reluctor ring.
1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft.
2. Use the J 5590 in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket. See Special Tools .