A 25-year veteran of the manufacturing business, Egan Hernandez joined Industrial Parts Depot (IPD) of Torrance, CA, back in 2011. He handles marketing and communications for IPD, which designs and manufactures a broad range of diesel & gas engine replacement parts for a wide variety of applications. In this guest column, he shares some repair tips IPD has compiled after taking care of Cummins ISX15 engines for trucking customers.