Assemble Procedure

Special Tools

• J 8062:  Universal Valve Spring Compressor
• EN-46119:  Valve Spring Compressing Adapter

Fig 1: Valve, Spring, Retainer & Seal
Courtesy of GENERAL MOTORS CORP.
1. Install the valve spring (3), retainer (2), and seal (4).
2. Install the J 8062:  Universal Valve Spring Compressor and EN-46119:  Valve Spring Compressing Adapter.
3. Install the valve key.
Fig 2: Valve Tappets
Courtesy of GENERAL MOTORS CORP.
NOTE: Do not scratch the valve tappet. Do not use gloves or tools, except special service tools.
4. Install the valve tappet.
Fig 3: Camshafts & Oil Seal Rings
Courtesy of GENERAL MOTORS CORP.
5. Coat and lubricate the camshaft bearing and cam surfaces (1, 2) with clean engine oil.
6. Install the camshafts on the cylinder head.
Fig 4: Sealing Surfaces Of Camshaft Bearing Cap
Courtesy of GENERAL MOTORS CORP.
NOTE: It is essential to ensure that no sealant is applied outside the marked sealing areas.
7. Apply surface sealant LOCTITE 574 to sealing surfaces (1) of the 1st camshaft bearing cap thinly and evenly.
Fig 5: Camshaft Caps & Bolts
Courtesy of GENERAL MOTORS CORP.
NOTE: The grooves (1) adjacent to the sealing surfaces must remain free from sealant.
8. Install the camshaft bearing caps in this sequence (2)-(3)-(1)-(4).
9. Install the camshaft position solenoid valve housing.

   Tighten:  Tighten the camshaft bearing cap bolts to 8 N.m (70.8 lb in).

10. Install the new camshaft oil seal rings. Refer to Camshaft Front Oil Seal Replacement .