Chevrolet Sonic Repair Manual: Cylinder Head Assemble
Special Tools
- EN-958 Valve Stem Seal Installer
- 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.
- Lubricate the valve stem and the valve guide with clean engine oil.
- Install the valve (5).
- Install the NEW valve stem oil seal (4), using the EN-958 installer (2).
- Loosely install the valve spring (3) and the valve spring retainer (1).
- 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).
- 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) can be inserted. Carefully insert the valve keys then, so that they are proper installed to the valve stem grooves.
- Carefully release the tension from the EN-50717?E assembly .
- Inspect the valve keys and valve spring retainers for proper seat.
- Remove the compressor assembly from the cylinder head.
- Repeat the procedure with the remaining valves.
Note:
Ensure all valve train components will be installed in their original position.
Caution:
The valve stem keys must correctly seat in the valve spring cap. Engine damage may occur by not installing properly.
Cylinder Head
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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 ...
Other materials:
Battery Tray Replacement
Battery Tray Replacement
Callout
Component Name
Preliminary Procedures
Remove the battery. Refer to Battery Replacement.
Unclip the engine control module (ECM) bracket from the battery
tray and set aside.
Unclip the ...
Evaporative Emission Canister Vent Solenoid Valve Replacement
Evaporative Emission Canister Vent Solenoid Valve Replacement
Callout
Component Name
Preliminary Procedures
Disconnect the battery negative cable. Refer to Battery Negative
Cable Disconnection and Connection.
Remove the e ...
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and
Connection
Removal Procedure
Note: Perform the following procedure when removing the retaining
rings and cooler lines from the quick connect fittings located on the
radiator and/or the transmission.
Pull the plastic cap back from the quick connect fitting
and dow ...
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