Diagrams; Connections And Wiring; Illustrations - Hobart JET-EX 4 Operation And Maintenance Manual

OM-2049

5. Diagrams

A schematic diagram of the generator set is provided in Chapter 6. This diagram can be very helpfull in
troubleshooting. Components shown in the diagram are identified by reference designators (or item
names in some instances). A legend appearing on the diagram identifies each reference designator by its
full item name. For example, the symbol K403 identifies the overvoltage relay, and M406 identifies the
voltmeter.
A connection diagram is also provided in Chapter 6. It also can be very helpful in troubleshooting, parts re-
placement, etc.

6. Illustrations

To aid maintenance personnel with troubleshooting, three illustrations are provided in this section, show-
ing the locations of various components of the generator set.

7. Connections and Wiring

Before condemning any electrical component, check all connections and wiring which could affect its op-
eration. In many instances a component may be non-functional simply because it is not receiving power
because of a loose connection or a poor ground. In most cases throughout the troubleshooting chart, it
will be assumed that connections and wiring have been checked.
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