Chevrolet Sonic Repair Manual: Cylinder Head Installation

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Block / Cylinder Head / 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 head
Straight-edge, feeler gauge

Install the cylinder head gasket.

Install the cylinder head.

Caution:

Refer to Fastener Caution.

Caution:

Refer to Torque-to-Yield Fastener Caution.

Note:

Note the correct tightening sequence.

Install NEW cylinder head bolts.

Tighten the bolts (1) in 5 passes. Use the EN-45059 sensor kit :

First pass to 25 Y (18 lb ft)
Second pass to 90°
Third pass to 90°
Fourth pass to 90°
Fifth pass to 45°

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 Tool ...

Cylinder Head Removal

Loosen the 12 cylinder head bolts in the sequence as shown. Use the following procedure: Loosen the cylinder head bolts 90 degrees. Loosen the cylinder head bolts 180& ...

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