Check Of The Camshafts And Supports - Ducati MONSTER 821 Workshop Manual

Check of the camshafts and supports

Check the cam contact surfaces for scratches, grooves, steps and waving.
Worn cams are frequently the cause of poor timing, which leads to loss of engine power.
Place the camshaft between two opposite centres and check the run-out on the areas indicated using two
dial gauges.
Service limit: 0.1 mm.
Visually inspect the camshaft tracks for scoring and abnormal wear. If any of the above defects are found,
the camshaft should be replaced.
If you find scoring or excessive wear, check the operation of the engine lubrication circuit.
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