Crankshaft Balancer Installation

Tools Required

• EN 46106  Engine Flywheel Holding Tool. See Special Tools .
• J 41998-B  Crankshaft Balancer Installer. See Special Tools .
• J 45059  Angle Meter. See Special Tools .

Fig 1: View Of Tool EN 46106
Courtesy of GENERAL MOTORS CORP.
1. The EN 46106  must be installed onto the flywheel. See Special Tools .
2. Use the J 41998-B  , nut, bearing and washer to install the crankshaft balancer. See Special Tools .
Fig 2: Lubricating Inside Of Crankshaft Balancer Hub Bore
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not lubricate the crankshaft front oil seal or crankshaft balancer sealing surfaces. The crankshaft balancer is installed into a dry seal.
3. Apply lubricant to the inside of the crankshaft balancer hub bore.
Fig 3: View Of Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
4. Place the crankshaft balancer in position on the crankshaft.
Fig 4: Installing Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
5. Thread the J 41998-B  in the crankshaft. See Special Tools . Ensure you engage at least 10 threads of the J 41998-B  before pressing the crankshaft balancer in place. See Special Tools .
6. Push the crankshaft balancer into position by tightening the nut on the J 41998-B  until the large washer bottoms out on the crankshaft end. See Special Tools .
7. Remove the J 41998-B  . See Special Tools .
Fig 5: View Of Crankshaft Balancer & Bolt
Courtesy of GENERAL MOTORS CORP.
8. Install the crankshaft balancer bolt.
NOTE: Refer to Fastener Notice in Cautions and Notices.
9. Tighten the crankshaft balancer bolt.

   Tighten: 

   1. Tighten the crankshaft balancer bolt to 100 N.m (74 lb ft).
   2. Tighten the crankshaft balancer bolt an additional 150 degrees using the J 45059  . See Special Tools .

Fig 6: View Of Tool EN 46106
Courtesy of GENERAL MOTORS CORP.
10. Remove the EN 46106  . See Special Tools .