GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Lumina 🢒 Engine 🢒 Engine Mechanical - 3.4L (VIN X) 🢒 Cylinder Head Assemble

Tools Required

J 38606 Valve Spring Compressor

  1. Lightly lap the reconditioned valves into the valve seat.

    2. Object Number: 57307 Size: SH
  2. Install the cooling jacket plugs. Coat the jacket plugs with a GM P/N1050026 sealer or equivalent.

    3. Important: Push the valve stem seals down as far as possible. Use an oversized valve stem if an oversized valve has been installed.

  3. Install the valves
  4. Measure the amount of valve runout. Do this by using the following method.
    5. 5.1. Lift the valve off of the valve seat
    5.2. Apply a dab of Prussian blue to the valve face
    5.3. Seat the valve
    5.4. Carefully rotate the valve
    5.5. Clean all traces of Prussian blue from the valve surfaces
    5.6. Apply a dab of Prussian blue to the valve seat
    5.7. Repeat the runout check
  5. Recondition the valve seat/face or replace the valves if the Prussian blue is transferred to the valve.

    6. Object Number: 57391 Size: SH
  6. Install the intake valve stem oil seals.
  7. Install the spring shim, if required.
  8. Install the valve stem O-ring.
  9. Install the valve springs.
  10. Install the valve caps.

    11. Object Number: 57390 Size: SH
  11. Use J 38606 in order to compress the valve springs.
  12. Install the valve locks. Hold the valve locks in place with grease if necessary.
  13. Release the valve springs.
  14. Check to ensure that the valve locks are fully seated.

    15. Notice: In order to avoid damage, install the spark plugs after the cylinder head has been installed on the engine.


    Object Number: 57231 Size: SH
  15. Install the right cylinder head engine lift hook and bolts.

    16. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.