Chevrolet Sonic Repair Manual: Cylinder Head Disassemble

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Block / Cylinder Head / Cylinder Head Disassemble

Special Tools

EN-840 Pliers/Remover
EN-8062 Valve Spring Compressor
EN-8062-5 Adapter
EN-50717-2 Compressor Assembly of EN-50717 Kit

For equivalent regional tools, refer to Special Tools.

Install the EN-50717?E assembly (1) to the EN-8062 compressor

Install the EN-50717?E assembly (1) to the EN-8062 compressor (4).
Install the EN-8062?E adapter (3) to the EN-8062 compressor.
Install the compressor assembly to the cylinder head, so that the adapter (5) of the EN-50717?E assembly (1) contacts the valve spring retainer properly and the EN-8062?E adapter (3) contacts the valve disc (2). Prefix the EN-8062 compressor (4).

Warning:

Valve springs can be tightly compressed. Use care when removing the retainers and plugs. Personal injury could result.

Apply pressure to the EN-50717?E assembly to push down the vale spring retainer (1) and compress the valve spring (3) until the valve keys (2) are free from tension. Carefully remove the valve keys.

Slowly and carefully loosen the EN-50717?E assembly until the valve spring is entirely expanded.
Remove the compressor assembly from the cylinder head.
Remove the valve spring retainer (1) and the valve spring (3).
Remove and DISCARD the valve stem oil seal (4), using the EN-840 pliers (2).
Remove the valve (5).

Note:

Ensure that the valve train components are kept together and identified in order for proper installation in their original position.

Repeat the procedure with the remaining valves.
In case of re-using the cylinder head, refer to Cylinder Head Cleaning and Inspection.

Cylinder Head Cleaning and Inspection

Valve Cleaning and Inspection Warning: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin. Note: Do not scratch the valve ste ...

Cylinder Head Installation

Special Tools EN-45059 Torque Angle Sensor Kit For equivalent regional tools, refer to Special Tools. Clean the sealing surfaces. Inspect for plane surface. Cylinder block, cylinder h ...

Other materials:

Radio Controls without Touchscreen
The buttons used to control the radio are: P /VOL: Press to turn the radio on and off. RADIO/BAND: Press to choose between AM, FM, and SiriusXM®, if equipped. Push/MENU/TUNE Knob: Turn to navigate the available menus. Turn to search for stations. INFO: Press to display additional information ...

Engine Oil Change
When a %CHANGE message displays in the DIC, have the engine oil and filter changed within the next 1 000 km/600 mi. If driven under the best conditions, the engine oil life system might not indicate the need for vehicle service for more than a year. The engine oil and filter must be changed ...

SIR Inflator Module Handling and Storage Warning
Warning: When carrying an undeployed inflator module: Do not carry the inflator module by the wires or connector. Make sure the air bag opening points away from you. When storing an undeployed inflator module: Make sure the air bag opening points away from the surface o ...

0.0086