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STANDARD PROCEDURE STANDARD PROCEDURE - MEASURING TIMING CHAIN WEAR NOTE: This procedure must be performed with the 1. Remove the timing chain cover. (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN 2. To determine if the secondary timing chains are worn, rotate the engine clockwise until maximum 3. If the measurement exceeds the specification the secondary timing chains are worn and require NOTE: If the secondary chains are to be replaced STANDARD PROCEDURE - ENGINE TIMING - VERIFICATION CAUTION: The 4.7L is a non free-wheeling design engine. Therefore, correct engine timing is critical. NOTE: Components referred to as left hand or right hand are as viewed from the drivers position inside the NOTE: The blue link plates on the chains and the dots on the camshaft drive sprockets may not line up Engine base timing can be verified by the following procedure: 1. Remove the cylinder head covers (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL). 9 - 994 ENGINE - 4.7L SERVICE INFORMATION ND |