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VALVE SPRINGS STANDARD PROCEDURE—VALVE SPRING - Whenever valves have been removed for inspection, reconditioning or replacement, valve springs should REMOVAL—VALVE SPRINGS This procedure can be done with the engine cylin- der head installed on the block. Each valve spring is held in place by a retainer and a set of conical valve locks. The locks can be (1) Remove the engine cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL). (2) Remove cap screws, bridge and pivot assem- blies and rocker arms for access to each valve spring (3) Remove push rods. Retain the push rods, bridges, pivots and rocker arms in the same (4) Inspect the springs and retainer for cracks and possible signs of weakening. (5) Remove the spark plug(s) adjacent to the cylin- der(s) below the valve springs to be removed. (6) Install a 14 mm (1/2 inch) (thread size) air hose adaptor in the spark plug hole. (7) Connect an air hose to the adapter and apply air pressure slowly. Maintain at least 621 kPa (90 (8) Tap the retainer or tip with a rawhide hammer to loosen the lock from the retainer. Use Valve Spring (9) Remove valve spring and retainer (Fig. 23). the valve seals are different for intake and exhaust Fig. 22 Testing Valve Spring for Compressed Length 1 - TORQUE WRENCH Fig. 23 Valve and Valve Components 1 - VALVE LOCKS (3–BEAD) 9 - 28 ENGINE 2.5L AN |