Hobart 120CU20, Operation And Maintenance Manual With Illustrated Parts List

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OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013 Chapter 4-1
Page 1
Chapter 4 Illustrated Parts List.
Section 1 Introduction.
1) General.
The Illustrated Parts List identifies, describes, and illustrates main assemblies, subassemblies, and detail
parts of an Engine-Generator Set manufactured by ITW GSE Group, Hobart Ground Systems.
2) Purpose.
The purpose of this list is to provide parts identification and descriptive information to maintenance and
provisioning personnel for use in provisioning, requisitioning, purchasing, storing, and issuing of spare
parts.
3) Arrangement.
Chapter 4 is arranged as follows:
Section 1 - Introduction
Section 2 - Manufacturer’s Codes
Section 3 - Parts List
Section 4 - Numerical index
4) Explanation of Parts List.
a) Contents.
The parts list contains a breakdown of the equipment into assemblies, subassemblies, and detail
parts. All parts of the equipment are listed except:

Standard hardware items (attaching parts) such as nuts, screws, washers, etc., which are
available commercially

Bulk items such as: wire, cable, sleeving, tubing, etc., which are also commercially available

Permanently attached parts, which lose their identity by being welded, soldered, riveted, etc., to
other parts, weldments, or assemblies
b) Parts List Form.
This form is divided into six columns. Beginning at the left side of the form and proceeding to the
right, columns are identified as follows:
(1) FIGURE-ITEM NO. Column.
This column lists the figure number of the illustration applicable to a particular parts list and
identifies each part in the list by an item number. These item numbers also appear on the
illustration. Each item number on an illustration is connected to the part to which it pertains by a
leader line. Thus, the figure and item numbering system ties the parts lists to the illustrations and
vice-versa. The figure and index numbers are also used in the numerical index to assist the user
in finding the illustration of a part when the part number is known.