Crankshaft Balancer Installation

Tools Required

• J 36660-A  Torque Angle Meter
• J 41478  Crankshaft Balancer Installer
• J 44226  Crankshaft Balancer Holder

1. Install the crankshaft balancer using J 41478.
Fig 1: Installing Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
2. Remove J 41478.
3. Install J 44226 to hold the crankshaft balancer.
4. Hold the flywheel or back of the crankshaft. The crankshaft balancer does not have a keyway so the crankshaft could turn when tightening, causing an improper torque.
   Fig 2: Holding Flywheel Or Back Of Crankshaft

   Courtesy of GENERAL MOTORS CORP.
   IMPORTANT: Be sure the crankshaft balancer shim, GM P/N 12573950, was installed prior to the engine front cover was installed.
5. Install the crankshaft balancer washer and new bolt.
   NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

   Tighten 

   1. 5.1. Tighten the new crankshaft balancer bolt while holding the front and back to 150 N.m (110.6 lb ft).
   2. 5.2. Use J 36660-A to tighten the crankshaft balancer bolt an additional 180 degrees.
Fig 3: Installing Crankshaft Balancer Washer And New Bolt
Courtesy of GENERAL MOTORS CORP.
6. Remove J 44226.