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 & Sprockets (L67)

   Courtesy of GENERAL MOTORS CORP.
3. Install the timing chain, the crankshaft sprocket, and the camshaft sprocket.
   NOTE: Refer to SPECIAL FASTENER NOTICE .
   NOTE: Refer to FASTENER NOTICE .
4. Install the camshaft sprocket bolt.

   Tighten 

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

   Fig 2: Install Timing Chain, Crankshaft & Camshaft Sprockets & 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 1b ft).

   Fig 3: Install Timing Chain Dampener

   Courtesy of GENERAL MOTORS CORP.