1 . Scope
This manual lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic
e q u i p m e n t (T M D E) , a n d o t h e r s p e c i a l s u p p o r t e q u i p m e n t r e q u i r e d f o r p e r f o r m a n c e o f o r g a n i z a t i o n a l , d i r e c t
support, and general support maintenance of the AN/USM-488. It authorizes the requisitioning, issue, and
d i s p o s i t i o n of spares, repair parts and special tools as indicated by the source, maintenance and recoverability
This Repair Parts and Special Tools List is divided into the following sections:
a. Section II. Repair Parts List. A list of spares and repair parts authorized by this RPSTL for use in the
performance of maintenance. The list also includes parts which must be removed for replacement of the
authorized parts. Parts lists are composed of functional groups in ascending numeric sequence, with the parts in
each group listed in ascending item number sequence. Figure numbers are listed directly beneath the group
b. Section III. Special Tools List. Not applicable.
c. Section IV. National Stock Number and Part Number Index. A list, in National item identification number
(NIIN) sequence, of all National stock numbered items appearing in the listings, followed by a list in alphamerical
s e q u e n c e of all part numbers appearing in the listings. National stock numbers and part numbers are cross
referenced to each illustration figure and item number appearance.
a. Item No. (Column (1)). Indicates the number used to identify items called out in the illustration.
b. SMR Code (Column (2)). The source, maintenance, and recoverability (SMR) code is a five-position code
containing supply/requisitioning information, maintenance
instruction, as shown in the following b r e a k o u t :