Timing Chain: Testing and Inspection
INSPECTION1. Mount a dial indicator to the front of the block.
2. Position the dial indicator so that the plunger contacts the timing chain between the two gears.
3. Pull the chain outward (parallel to the front face of the block) the maximum amount with finger pressure on the inside of the chain.
4. Set the dial indicator to zero.
5. Move the chain inward (parallel to the front face of the block) the maximum amount with finger pressure on the outside of the chain.
6. The total indicator travel can be noted. With used parts, the deflection must not exceed 20.3 mm (0.80 inch). If the deflection exceeds this limit, the sprockets and timing chain must be inspected for wear and replaced as necessary. With new parts the maximum deflection must not exceed 12.7 mm (0.50 inch).