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SPRING -VALVE DESCRIPTION The valve springs are made from chrome silicon alloy The valve springs are unique for intake compared to The exhaust spring with the white dye on the top of the coils has an increased open and closed load when com- OPERATION The valve spring returns the valve against its seat for a positive seal of the combustion chamber. REMOVAL CYLINDER HEAD OFF 1. Compress valve spring with valve spring compressor C-3422-D and adapter 6526 (Refer to 9 - ENGINE - SPE- CIAL TOOLS). 2. Remove valve retaining locks. Release valve spring compressor. Remove valve spring retainer and valve spring. 3. Remove valve stem seal assembly. (Refer to 9 - ENGINE/CYLINDER HEAD/VALVE STEM SEALS - REMOVAL) CYLINDER HEAD ON 1. Disconnect negative battery cable. 2. Remove upper intake manifold (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANIFOLD - REMOVAL). 3. Remove cylinder head cover(s) (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL). 4. Remove rocker arm and shaft assembly (Refer to 9 - ENGINE/CYLINDER HEAD/ROCKER ARM / ADJUSTER ASSY - REMOVAL). 5. Remove spark plugs. 6. Rotate the crankshaft clockwise, until the number 1 piston is at Top Dead Center (TDC) on the com- 7. With air hose attached to spark plug adapter installed in number 1 spark plug hole, apply 620.5 8. Using Tool MD 998772A (1) with adapter 6527 (4) or equivalent, compress valve spring and remove 9 - 2184 ENGINE - 3.5L - SERVICE INFORMATION LX |