Cylinder Head Assemble

Special Tools

• EN-6215:  Mounting Equipment
• EN-6167:  Support Set
• EN 6086:  Spring And Wedge Replacer Kit
• EN-840:  Pliers / Remover
• EN-835-A:  Installer

For equivalent regional tools, refer to Special Tools .

NOTE: Lubricate the valve guides and the valve stems with engine oil.
NOTE: Ensure that the valves will be installed in their original position.
1. Install the 16 valves to the cylinder head.
Fig 1: Brace And Bolts
Courtesy of GENERAL MOTORS CORP.
2. Install EN-6167-1:  braces (1) and hold with EN-6167-5:  bolts (2) to support the valves.
3. Install the 16 valve stem oil seals. Use EN-835-A:  installer to push down the valve stem oil seals.
NOTE: Ensure that the valve springs and the valve spring retainers are installed in their original position.
4. Install the 16 valve springs and the 16 valve spring retainers.
Fig 2: Lever Adapter, Screw Connection, Plunger, Spring, Bushing And Support
Courtesy of GENERAL MOTORS CORP.
NOTE: A wrong combination of mounting piece and plunger can cause damage to the plunger or the valve keys.
5. Prepare EN-6086-200-1:  mounting piece for the valve key installation. The mounting piece must be assembled in the following order:
   1. Support (6)
   2. Bushing (5)
   3. Spring (4)
   4. EN-6086-200-10:  plunger (3)
   5. Screw connection (2)
   6. Lever adapter (1)
Fig 3: Installing Valve Keys To Mounting Piece
Courtesy of GENERAL MOTORS CORP.
6. Install the valve keys (1) to the mounting piece (2) as shown and hold them with the bushing.
Fig 4: Handle, Lever Arm, Adapter And Demounting Piece
Courtesy of GENERAL MOTORS CORP.
7. Install EN-6086-7:  lever (2) along with the lever adapter (3) and the mounting piece (4) to the handle (1).
8. Push the mounting piece slightly down until the valve keys are audible engaged.
9. Repeat the procedure on the remaining 15 valves.
10. Remove EN-6167-1:  braces and EN-6167-5:  bolts.
11. Remove the cylinder head from the EN-6215-1:  mounting table.