Chevrolet Sonic Repair Manual: Crankshaft Balancer Installation

Special Tools

• EN-470–B Angular Torque Wrench
• EN-956?E Extension
• EN-49979 Crankshaft Shock Mount Retainer

For equivalent regional tools, refer to Special Tools.

Note:

The crankshaft balancer flange must fit to the hexagon of the oil pump rotor (2) and to the two-flat of the crankshaft (1).

1. Install the crankshaft balancer by carefully pressing into position.


2. Measure the distance a

   between the crankshaft balancer (2) and the engine front cover (1). The distance a

   should be 5.5 mm (0.21654 in).

Note:

Never re-use the crankshaft balancer bolt.

3. Install a NEW crankshaft balancer bolt.



Caution:

Refer to Fastener Caution.

Caution:

Refer to Torque-to-Yield Fastener Caution.

4. Tighten the crankshaft balancer bolt (4) while holding the crankshaft balancer (3) with EN-49979 retainer (1) and EN-956?E extension (2) in the following order:
1. Tighten the crankshaft balancer bolt to 150 Y (111 lb ft)

   .

2. Tighten the crankshaft balancer bolt to an additional 45 degrees

   , using EN-470–B wrench.