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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Mechanical - 1.5L (LYX)) >> Repair Instructions >> Cylinder Head Disassemble >> Intake and Exhaust Valve Removal

Intake and Exhaust Valve Removal

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GM3600054Courtesy of GENERAL MOTORS COMPANY
Intake and Exhaust Valve Removal

Callout Component Name

Preliminary Procedure

    NOTE:

    Many internal engine components will develop specific wear patterns on their friction surfaces.

  1. Components MUST be separated, marked, or organized in a way to ensure installation to their original location and position. Take precautions in order to prevent interchanging of parts.
  2. Tag or mark each part immediately when removed. Indicate location, direction, or orientation when necessary.
1 Valve Stem Key - Intake, Exhaust (Qty: 32)
WARNING:

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.

CAUTION:

Do not compress the valve springs less than 25.0 mm (0.984 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.

Procedure

  1. Using the EN-8062  compressor and the EN-43963  compressor adapter, compress the valve spring.
  2. Remove the valve stem keys.

Special Tools

  • EN-8062  Valve Spring Compressor
  • EN-43963  Valve Spring Compressor - Off-Car Adapter
  • EN-50717  Compressor Adapter

For equivalent regional tools, refer to Special Tools .
2 Valve Spring Retainer (Qty: 16)

Procedure

  1. Slowly release the EN-8062  compressor and the EN-43963  compressor adapter from the valve spring assembly.
  2. Remove the valve spring retainer.
3 Valve Springs (Qty: 16)
4 Valve Stem Oil Seal (Qty: 16)
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.


Procedure 
Using EN-46116  remover, remove the seals. Discard all used seals and replace with new.
Special Tools 
EN-46116  Valve Seal Remover
For equivalent regional tools, refer to Special Tools .
5 Exhaust Valve (Qty: 8)
6 Intake Valve (Qty: 8)
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