Crankshaft Balancer Installation (LDK, LHU)

Special Tools

• EN-38122-A  Crankshaft Balancer Holder
• EN-43653  Flywheel Holding Tool
• EN-45059  Angle Meter
• EN-48585  Crankshaft Balancer Guide
• EN-48953  Camshaft Actuator Locking Tool

For equivalent regional tools, refer to Special Tools (LDK, LHU) .

Fig 1: Crankshaft Balancer
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Ensure both components are aligned correctly or serious engine damage will occur.

1. Install the balancer (2) onto the EN-48585  guide (1). Use care to properly align the keyway and flats on the balancer with the oil pump drive.
2. Install the crankshaft balancer into the end of the crankshaft.
Fig 2: Crankshaft Balancer Holder
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Refer to Fastener Caution .

NOTE:

EN-43653  flywheel holding tool may be used instead of EN-38122-A  crankshaft balancer holder to prevent crankshaft rotation.

NOTE:

Always install a NEW crankshaft balancer retaining bolt.

3. Install a NEW retaining bolt. Use EN-38122-A  holder (1) and a breaker bar to prevent the crankshaft from rotating, and tighten the bolt to 150 N.m (111 lb ft) plus 100 degrees using the EN-45059  angle meter.
Fig 3: View Locking Tool
Courtesy of GENERAL MOTORS COMPANY
4. Install EN-48953  locking tool (1) and tighten the bolts into the cylinder head to 10 N.m (89 lb in).
5. Release the timing chain tensioner by applying 45 N.m (33 lb ft) counterclockwise torque to the crankshaft balancer bolt.
6. Remove EN-48953  locking tool.