Chevrolet Sonic Repair Manual: Separating Parts
Note:
- Disassembly of the piston, press fit design piston pin, and connecting rod may create scoring or damage to the piston pin and piston pin bore. If the piston, pin, and connecting rod have been disassembled, replace the components as an assembly.
- Many internal engine components will develop specific wear patterns on their friction surfaces.
- When disassembling the engine, internal components MUST be separated, marked, or organized in a way to ensure installation to their original location and position.
Separate, mark, or organize the following components:
- Piston and the piston pin
- Piston to the specific cylinder bore
- Piston rings to the piston
- Connecting rod to the crankshaft journal
- Connecting rod to the bearing cap—A paint stick or etching/engraving type tool are recommended. Stamping the connecting rod or cap near the bearing bore may affect component geometry.
- Crankshaft main and connecting rod bearings
- Camshaft and valve tappets
- Valve to the valve guide
- Valve spring and shim to the cylinder head location
- Engine block main bearing cap location and direction
- Oil pump drive and driven gears
Replacing Engine Gaskets
Gasket Reuse and Applying Sealants
Do not reuse any gasket unless specified.
Gaskets that can be reused will be identified in the service procedure.
Do not apply sealant to any ...
Service Prior to Assembly
The importance of cleanliness during assembly cannot be overstated. Dirt or debris
will cause engine damage. An automobile engine is a combination of many machined,
honed, polished and lapped surf ...
Other materials:
Braking
Braking action involves perception time and reaction time. Deciding to push the
brake pedal is perception time. Actually doing it is reaction time.
Average driver reaction time is about three-quarters of a second. In that time,
a vehicle moving at 100 km/h (60 mph) travels 20m (66 ft), which co ...
Immobilizer Description and Operation
The immobilizer system functions are provided by the body control module (BCM)
and the engine control module (ECM), as well as any modules which store and report
the environment identifier.
When an ignition key is inserted into the ignition lock cylinder and the ignition
is switched ON, the ...
Relay Replacement (Attached to Wire Harness)
Removal Procedure
Locate the relay. Refer to the Master Electrical Component List to locate
the relay in the vehicle.
Remove any fasteners which hold the relay in place.
Remove any connector position assurance (CPA) devices or secondary locks.
Note: Use care w ...
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