Racal Instruments AN/TRC-207, Operation And Maintenance Instructions

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TO 31R2-2TRC207-1
7-1
CHAPTER 7 ILLUSTRATED PARTS BREAKDOWN
Section I. INTRODUCTION
7-1 GENERAL
The Illustrated Parts Breakdown (IPB) lists, illustrates, and describes the parts used in the BDR, Radio Set AN/TRC-
6728. The items are manufactured by Racal Communications, Inc., Rockville, Maryland.
7-2 MAINTENANCE PARTS LIST
The Maintenance Parts List (MPL), (Section II), consists of the complete systems divided into main groups. The main
groups are broken down into assemblies, subassemblies, and details. The next higher assembly (NHA) is indicated for
each separately illustrated item. Each assembly and subassembly listed is followed immediately by its component parts.
In general, the assemblies and parts installed at the time the end item was manufactured are listed and identified in the
manual. When an assembly/part (including vendor items) different from the original was installed during manufacture
of the later items, series, or blocks, all assemblies and parts are listed (and "Usable on" coded). However, when the
original assembly or part does not have continued application, only the preferred assembly or part is listed. When an
assembly/part installed during modification, and the original does not have continued application, only the preferred item
is listed. Interchangeable and substitute assemblies and parts, subsequently authorized by the Government, are not listed
in this manual. When a standard size part can be replaced with an oversize/undersize part, the latter parts, showing sizes,
are also listed.
a. Figure and Index Number Column. This column lists the figure and index number of each part
illustrated in the related figure. The index numbers are in numerical sequence and indicate order of
disassembly except where the order does not apply. Index numbers identify each part number shown
in the related figure. Assemblies which have detail parts indexed are not indexed unless; the assembly
is illustrated completely assembled on the same illustration; or it is identified as an assembly by
bracketing or circling of components. When a group of parts (bolt, washer, nut) is used at a specific
location for attachment purposes, one index number assigned is sufficient. The index number appears
on the same line as the first part composing the group.
b Part Number Column. This column lists the contractor's part number (drawing number), including dash
numbers, assigned to each part. Vendor part numbers are listed when parts are identical to the
contractor used part. Those parts which have Government Standards numbers assigned have the
Government Standards number listed. Parts altered or selected for special fit, tolerance, etc., from
vendor, commercial, or Government Standards part number of the altered or selected part follow the
part description in the Description column. Item(s) of supply part number(s) and Contractor and
Government Entity (CAGE) that is stocked, stored, and issued by the Government as identified by the
Government during the initial provisioning process shall be identified by an (*) sign preceding the part
number one space to the left. Government Furnished Equipment (GFE) and Contractor Furnished
Equipment (CFE), covered by separate manuals are listed and identified by a number sign (#) inserted
flush right following the part number. Decalcomania, metal-cals, and vinyl film markings are
considered as parts. The part number for each marking will be followed by a asterisk (*) symbol
inserted flush right. Requisition the marking in accordance with the requirements of AFR 6-1.
c. CAGE Column. This column contains a five-digit code number following the part number denoting
the procuring vendor. The source of vendor code numbers is the CAGE for Manufacturer Cataloging
Handbook H4-1, H4-2, and H4-3. When a CAGE for the appropriate manufacturer or Government
agency is not published in the current issues of the H4 handbook, the word "none" will appear in this
column.