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Maintenance: Contamination

MAINTENANCE by Tom Jackson Dust on the outside is always trying to ﬁnd ways to get inside your engines. Dirty little secrets Contamination in today’s equipment can cost you big bucks – and the danger is hiding in plain sight. H ere’s a quiz for all you mechanics, technicians and ﬂeet managers. Say you had two identical pieces of equipment working in two identical applications and environments. Machine A had no air ﬁlter. Machine B had no oil ﬁlter. Which engine would die ﬁrst? According to Daryl Riley, manager of ﬁeld services for the engine group at Donaldson, it’s Machine A. When Riley poses this question to technicians in his training classes, typically half the class gets it wrong. There are a lot of other ways to contaminate an engine, Riley says, “But dust ingestion is the biggest issue.”

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