Cylinder Head Off

REMOVAL - CYLINDER HEAD ON





1. Disconnect negative battery cable.
2. Remove upper intake manifold Intake Manifold - Removal.
3. Remove cylinder head cover(s) Cylinder Head Cover - Removal.
4. Remove rocker arm and shaft assembly.
5. Remove spark plugs.
6. Rotate the crankshaft clockwise, until the number 1 piston is at TDC (Top Dead Center) on the compression stroke.
7. With air hose attached to spark plug adapter installed in number 1 spark plug hole, apply 620.5 to 689 kPa (90 to 100 psi) air pressure. This is to hold valves into place while servicing components.

NOTE: It may be necessary to use accessory studs 6886, adapter arm 6887 and 6885 valve adaptor along with MD 998772A, to compress the valve spring on the right cylinder head exhaust valves.

8. Using Tool MD 998772A (1), with adapter 6527 (4) or equivalent, compress valve spring and remove valve locks (5). Release tension on valve spring, remove retainer (5) and valve spring Tools and Equipment.
9. Remove valve stem seal, if required. Valve Guide Seals - Removal
10. Follow the same procedure on the remaining 5 cylinders using the firing sequence 1-2-3-4-5-6. Make sure piston is at TDC in each cylinder of the valve spring that is being removed.
11. Remove spark plug adapter tool.