Chevrolet Sonic Repair Manual: 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.
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 ...
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:
Tire Pressure Light
For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on
briefly when the engine is started. It provides information about tire pressures
and the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated.
Stop as soo ...
Rear Wheel Speed Sensor Replacement
Removal Procedure
Warning: Refer to Brake Dust Warning.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the tire and wheel assembly. Refer to Tire and Wheel Removal
and Installation.
Remove the rear wheel speed sensor ...
Air Intake System Description
Circuit/System Description
The primary function of the air intake system is to provide filtered air
to the engine. The system uses a filter element mounted in a housing. The filter
housing is remotely mounted and uses intake ducts to route the incoming air
into the throttle body. T ...
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