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SPRINGS & SEALS-VALVE REMOVAL CYLINDER HEAD ON 1. Remove cylinder head cover (Refer to 9 - ENGINE/ CYLINDER HEAD/CYLINDER HEAD COVER(S) - 2. Remove camshafts (Refer to 9 - ENGINE/CYLIN- DER HEAD/CAMSHAFT(S) - REMOVAL). 3. Rotate crankshaft until piston is at TDC on com- pression. 4. With air hose attached to adapter tool installed in spark plug hole, apply 90-120 psi air pressure. 5. Using metric valve keeper remover (1), and remove valve spring keepers and retainer. 6. Remove valve spring(s). 7. Remove valve stem seal(s) by a using valve stem seal tool. CYLINDER HEAD OFF 1. With cylinder head removed from cylinder block, place a ball of rags in the combustion chamber. 2. Using Snap On metric valve keeper remover (1) or equivalent, remove valve keepers with a downward 3. Remove retainer and springs. 4. Before removing valves, remove any burrs from valve stem lock grooves to prevent damage to 5. Inspect the valves. (Refer to 9 - ENGINE/CYLIN- DER HEAD/VALVE SPRINGS - INSPECTION). INSPECTION 1. Whenever valves have been removed for inspection, reconditioning or replacement, valve springs should be tested for correct tension. Discard the springs that do not meet specifications. The following specifications apply • Valve Closed Nominal Tension—75 lbs. @ 38.0 mm (1.50 in.) • Valve Open Nominal Tension—134 lbs. @ 29.75 mm (1.17 in.) 2. Inspect each valve spring for squareness with a steel square and surface plate, test springs from both ends. If the spring is more than 1.5 mm (1/16 inch) out of square, install a new spring. PM ENGINE 2.4L WORLD 9 - 1707 |