Chevrolet Sonic Repair Manual: Crankshaft Balancer Replacement

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Block / Cylinder Block / Crankshaft Balancer Replacement

Special Tools

EN-470–B Angular Torque Wrench
EN-49979 Crankshaft Shock Mount Retainer

For equivalent regional tools, refer to Special Tools.

Removal Procedure

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove front wheelhouse liner extension right side. Refer to Front Wheelhouse Liner Inner Front Extension Replacement.
Remove the drive belt. Refer to Drive Belt Replacement.
Place collecting basin underneath.

Note:

The crankshaft balancer can be incorrectly installed 180° from the required position. Be sure to note the location of the alignment hole on the crankshaft balancer prior to removing the crankshaft balancer from the engine.

Rotate the engine clockwise until the bore (2) in the crankshaft balancer aligns with the mark (1) on the engine front cover.

Install EN-49979 crankshaft shock mount retainer (1) to suitable tool (2).
Loosen the crankshaft balancer bolt (4) while holding the crankshaft balancer (3).

Remove and DISCARD the crankshaft balancer bolt (2).
Remove the crankshaft balancer (1).

Installation Procedure

Note:

The crankshaft balancer flange must fit to the hexagon of the oil pump rotor (2) and to the two-flats of the crankshaft (1). The TDC markings on crankshaft balancer and engine front cover must match.

Install the crankshaft balancer carefully by pressing into position.

Measure the distance (a) between the crankshaft balancer (2) and the mark on the engine front cover (1). The distance (a) should be 5.5 mm (0.21654 in)
.

Note:

Never re-use the crankshaft balancer bolt.

Install a NEW crankshaft balancer bolt.

Caution:

Refer to Fastener Caution.

Caution:

Refer to Torque-to-Yield Fastener Caution.

Tighten the crankshaft balancer bolt (4) to 150 N•m (111 lb ft) while holding the crankshaft balancer (3) with EN-49979 crankshaft shock mount retainer (1) and suitable tool (2). Use EN-470-B wrench .
Tighten the crankshaft balancer bolt to an additional 60°
.
Install the drive belt. Refer to Drive Belt Replacement.
Install the front wheelhouse liner extension right side. Refer to Front Wheelhouse Liner Inner Front Extension Replacement.
Lower the vehicle.
Check and correct engine oil level.

Crankshaft Balancer Removal

Special Tools EN-652 Flywheel Holder For equivalent regional tools, refer to Special Tools. Install the EN-652 holder (1). Lock the flywheel (2) or the automatic transmis ...

Crankshaft Position System Variation Learn

Note: The crankshaft position sensor system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set: ...

Other materials:

Underbody Rear Side Rail Extension Replacement
Removal Procedure Warning: Refer to Approved Equipment for Collision Repair Warning. Warning: Refer to Glass and Sheet Metal Handling Warning. Disable the SIR System. Refer to SIR Disabling and Enabling. Disconnect the negative battery cable. Refer ...

Driver or Passenger Seat Shoulder Belt Replacement (with A69)
Driver or Passenger Seat Shoulder Belt Replacement Callout Component Name Warning: Refer to SIR Warning. Warning: Refer to SIR Inflator Module Handling and Storage Warning. Warning: Refer to SIR ...

P-Metric Sized Tires Description
245/50r16953typeloadindep-passengerttemporarylt-lighttruckspeedsymbolsectionwidth(millimeters)235245275construction(sectionwidth)ddagonal(bas)40sectionwidthsectionheight Replacement tires should be of the same tire performance criteria (TPC) specification number. This will ensure the same size, ...

0.0059