Timing Chain and Sprockets Installation (L67)

Tools Required: J 36660-A  Torque Angle Meter

1. Install the crankshaft balancer key into the crankshaft keyway. The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.
2. Install the timing chain on the sprockets. Align the timing marks.
   Fig 1: Timing Chain Marks

   Courtesy of GENERAL MOTORS CORP.
3. Install the timing chain, the crankshaft sprocket, and the camshaft sprocket.
4. Install the camshaft sprocket bolt.

   Tighten: 

   Tighten the camshaft sprocket bolt to 100 N.m (74 lb ft). Use J 36660-A to tighten the camshaft sprocket bolt an additional 90 degrees 

   Fig 2: Camshaft Sprocket Bolt

   Courtesy of GENERAL MOTORS CORP.
5. Install the timing chain dampener.

   Tighten: 

   Tighten the timing chain dampener bolt to 22 N.m (16 lb ft) 

   Fig 3: Timing Chain Dampener

   Courtesy of GENERAL MOTORS CORP.