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:
Heater Core Replacement
Heater Core Replacement
Callout
Component Name
Preliminary Procedures
Remove the Heater and Air Conditioning Evaporator and Blower Module.
Refer to Heater and Air Conditioning Evaporator and Blower Module Removal
and Inst ...
Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure
Use soft bristle wire brush to clean any carbon build-up from the valve
head. DO NOT use a wire brush on any part of the valve stem. The valve stem
is chrome plated to provide enhanced wear characteristics. Wire brushing
the stem could remove the chr ...
Camshaft Intake and Exhaust Sprocket Replacement
Special Tools
EN-955-A Locking Pin
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.
Remove the camshaft cover. Refer to Camshaft Cover Replacement.
Remove both camshaft p ...
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