1. Measure timing chain deflection. Deflection must not exceed 0.810 in. (21 mm). Use dial indicator Jโ8001 (Figure 2-89).
2. Measure camshaft end play. End play should not exceed 0.012 in. (0.3 mm). If end play exceeds 0.012 in. (0.3 mm), camshaft sprocket, thrust plate, or spacer is worn and will have to be replaced.
3. Remove injection pump drive gear bolt and remove drive gear from camshaft.
4. Remove crankshaft sprocket, camshaft sprocket, and timing chain as assembly (Figure 2-88).
5. Remove drive keys from camshaft and crankshaft.
