Crankshaft Balancer Installation

Special Tools

• EN 41998-B  Crankshaft Balancer Installer
• EN 45059  Angle Meter
• EN 46106  Engine Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools .

Fig 1: Flywheel Holding Fixture
Courtesy of GENERAL MOTORS COMPANY
1. The EN 46106  tool must be installed onto the flywheel.
2. Use the EN 41998-B  installer, nut, bearing and washer to install the crankshaft balancer.
Fig 2: Lubrication And Non-Lubrication Areas On Crankshaft Balancer
Courtesy of GENERAL MOTORS COMPANY
NOTE:

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: Crankshaft Balancer And Bolt
Courtesy of GENERAL MOTORS COMPANY
4. Place the crankshaft balancer in position on the crankshaft.
5. Thread the EN 41998-B  installer in the crankshaft. Ensure you engage at least 10 threads of the EN 41998-B  installer before pressing the crankshaft balancer in place.
6. Push the crankshaft balancer into position by tightening the nut on the J 41998-B  installer until the large washer bottoms out on the crankshaft end.
7. Remove the EN 41998-B  installer.
Fig 4: Crankshaft Balancer Bolt
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

8. Install the NEW crankshaft balancer bolt.
CAUTION:

Refer to Fastener Caution .

9. Tighten the crankshaft balancer bolt.
   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 EN 45059  meter.
Fig 5: Flywheel Holding Fixture
Courtesy of GENERAL MOTORS COMPANY
10. Remove the EN 46106  tool.