Assemble Procedure
Assemble the EN-50717 Valve Spring Compressor components (1) with the EN-50717 - 20 Valve Spring Compressor Adapter Set (2).
- Install the assembled EN-50717 Valve Spring Compressor components on the cylinder head.
- CAUTION:
Do not damage the valve guide. Remove any burrs that have formed at the key groove by chamfering the valve stem with an oil stone or a file.
Intake Valve (2) - Install
- Using EN-840 Pliers / Remover, install a NEW valve stem oil seal (1).
Valve Spring (3) - Install
- Valve Spring Retainer (2) - Install
- Using the EN-50717 Valve Spring Compressor (1), compress the valve spring.
- Valve Stem Key (4) - Install [2x]
- Slowly release the EN-50717 Valve Spring Compressor from the valve spring assembly.
- Repeat the procedure for the remaining intake valves and exhaust valves.
- Remove the EN-50717 Valve Spring Compressor components.
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Fig 1: Identifying Camshaft Position Sensor Components, Camshaft Housing Cover Pin, Cylinder Head Core Hole Plug And Engine Lift Bracket Retainer
Courtesy of GENERAL MOTORS COMPANY
Camshaft Position Sensor Seal (3) - Install NEW
- Camshaft Position Sensor (4) - Install
- Camshaft Position Sensor Bolt (5) - Install and tighten - Fastener Specifications
- Cylinder Head Core Hole Plug (2) - Install [2x]
- Engine Lift Bracket Retainer (6) - Install
- Camshaft Housing Cover Locating Pin (1) - Install
Cylinder Head Temperature Sensor (2) - Install and tighten - Fastener Specifications
- Engine Lift Bracket Retainer (3) - Install
- Camshaft Housing Cover Locating Pin (1) - Install
Fuel Injection Fuel Rail Stud (1) - Install and tighten [3x] - Fastener Specifications
Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
Components MUST be separated, marked, or organized in a way to ensure the installation to their original location and position. Take precautions in order to prevent interchanging of parts.
Refer to Fastener Caution .