Researchers have released a preventive maintenance plan for the machines by making the inspection and maintenance based on the planned. The result is the break down time became to zero. An available rate of the machine running is 100%, because the machine has not been break down. The researchers discuss the preventive maintenance system led to a factory case study carried out manually. The result is has 2 times of break down. Cause from had no inspect machinery according to standard and the factory not have the person who responsible to the system, so an available rate of the machine running decrease to 99.66%, with the mean time