Installation Procedure

Important:  If any of the camshaft drive components are being replaced to correct a noise condition, replace all of the components in the camshaft drive system.

Important:  Install crankshaft sprocket alignment key.

If any of the camshaft drive components are being replaced to correct a noise condition, replace all of the components in the camshaft drive system.

1. Install crankshaft sprocket alignment key.
2. Install the crankshaft sprocket using J 5590  .

   Make sure that the crankshaft sprocket is seated against the crankshaft.

3. Install the timing chain and install the timing chain tensioner.
   Fig 1: Crankshaft Sprocket Alignment Key, Crankshaft Sprocket & J 5590

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4. Compress the timing chain tensioner spring.
5. Insert a cotter pin or a nail into the hole in the tensioner to retain the timing chain tensioner shoe.
   Fig 2: Timing Chain Tensioner

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6. Install the timing chain tensioner. Do not tighten the timing chain tensioner bolts.
   Fig 3: Timing Chain Tensioner & Bolts

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7. Align the crankshaft sprocket timing mark with the tab on the timing chain tensioner.
8. Align the camshaft sprocket timing mark with the tab on the timing chain tensioner.
   NOTE: Refer to FASTENER NOTICE .
9. Install the camshaft sprocket and install the timing chain.

   Tighten 

   • Tighten the timing chain tensioner bolts to 24 N.m (18 lb ft).
   • Tighten the camshaft sprocket bolt to 130 N.m (96 lb ft).
   Fig 4: Aligning Crankshaft Sprocket, Camshaft Sprocket & Timing Chain Tensioner Marks

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10. Remove the cotter pin or nail from the hole in the timing chain tensioner.
11. Remove the bolt from the end of the crankshaft.
12. Install the engine front cover. Refer to Engine Front Cover Replacement .
    Fig 5: Timing Chain Tensioner

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