Ford is implementing TPM (Total Productive Maintenance), for which want to use historical KPIs to improve the processes of the new leaf spring for F-350 truck.

Its historical data is: 8 hour shifts, in each shift is scheduled 45 minutes for lunch, the assembly line can process 560 leaf springs per shift with 8 operators, its capacity is 105 leaf springs per hour, but the line has several stops per shift with a total downtime of 1.25 hours in average, of the 560 leaf springs, 20 leaf springs have specific errors. For the calculation of DPMO or PPM at 20 leaf springs inspections revealed a total of 6 have defects, each leaf spring has three characteristics and each one is considered an opportunity.

One of the most important TPM tools is the OEE measurement, it is a measure that tells us how well a production line works over time scheduled, the key team (bottleneck) is Final Operations for the leaf spring, calculate the following:

a) OEE. b) DPMO or PPM. c) Productivity (leaf springs x HH).