Changes in force: C 1, C 2, C 3, and C 4
TM 11-6625-599-12
C4
HEADQUARTERS
CHANGE
DEPARTMENT OF THE ARMY
WASHINGTON , DC, 28 July 1976
No. 4
Operator's and Organizational Maintenance Manual
Including Repair Parts and Special Tools Lists
V O L T M E T E R S , ELECTRONIC AN/USM-98A AND AN/USM-98B
TM 11-6625-599-12, 24 November 1964, is changed as follows:
P4610.19B, and DSAR 4500.15.
The title of the manual is changed as shown
above.
1-3.1. Reporting of Errors
So much of paragraphs 1-5, 2-5, and 2-7 as reads
The reporting of errors, omissions, and recommenda-
"60 cycles" is changed to read" 60 Hz."
tions for improving this manual by the individual
Page 5. Paragraphs 1-3 and 1-3.1 are superseded as
user is encouraged. Reports should be submitted on
follows:
DA Form 2028 (Recommended Changes to Publica-
1-3. Forms and Records
tions and Blank Forms) and forwarded direct to
Commander, US Army Electronics Command,
a. Reports of Maintenance and Unsatisfactory
ATTN: DRSEL-MA-Q, Fort Monmouth, NJ 07703.
Equipment. Maintenance forms, records, and re-
ports which are to be used by maintenance person-
Page 7. Paragraph 1-8 Add the following at the
nel at all maintenance levels are listed in and
end of the paragraph: The AN/USM-98B has been
prescribed by TM 38-750.
manufactured under several orders with minor
b. Report of Packaging and Handling Deficien-
differences in repair parts; appendix IV covers the
ties. Fill out and forward DD Form 6 (Packaging Im-
earlier units; appendix V covers later units
p r o v e m e n t Report) as prescribed in AR
manufactured under contract DAAB07-74-C-0622.
700-58/NAVSUPINST 4030.29/AFR 71-13/MCO
Page 22. The title of figure 6 is changed to read
P4030.29A, and DSAR 4145.8.
" V o l t m e t e r , Electronic AN/USM-98A and
c. Discrepancy in Shipment Report (DISREP)
AN/USM-98B, rear view of front panel, parts loca-
(SF361). Fill out and forward Discrepancy in Ship-
tion."
ment Report (DISREP) (SF361) as prescribed in AR
Page 26. Appendix II is superseded as follows:
55-38/NAVSUPINST 4610.33A/AFR 75-18/MCO
APPENDIX II
M A I N T E N A N C E ALLOCATION
Section I. INTRODUCTION
A2-1. General
a. Inspect. To determine the serviceability of an
item by comparing its physical, mechanical, and/or
This appendix provides a summary of the mainte-
electrical characteristics with established standards
nance operations for AN/USM-98A and
through examination.
AN/USM-98B. It authorized categories of mainte-
nance for specific maintenance functions on repair-
b. Test. To verify serviceability and to detect inci-
able items and components and the tools and equip-
pient failure by measuring the mechanical or
ment required to perform each function. This appen-
electrical characteristics of an item and comparing
dix may be used as an aid in planning maintenance
those characteristics with prescribed standards.
operations.
c. Service. Operations required periodically to
A2-2. Maintenance Function
keep an item in proper operating condition; i.e., to
clean, preserve, drain, paint, or to replenish
Maintenance functions will be limited to and
fuel/lubricants/hydraulic fluids or compressed air
defined as follows:
1
