ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
2-3. PMCS PROCEDURES (cont).
c. Item to be checked or serviced column. This column identifies the item to be checked or
serviced.
Procedure column. This column gives the procedure you must do to check or service the item
d.
listed in the Item to be Checked or Serviced column to know if the equipment is ready or available for
its intended mission or for operation. You must do the procedure at the time stated in the inteval
column.
Not Fully Mission Capable If: column. Information in this column tells you what faults will
e.
keep your equipment from being capable of performing its primary mission. If check and service pro-
cedures reveal faults listed in this column, do not operate the equipment. Follow standard operating
procedures for maintaining the equipment or reporting equipment failure.
Not Fully
Item
Item to be
Mission Capable
No.
Interval
Checked or Serviced
Procedure
If:
1
Monthly
M2A2 Aiming
Check for deterioration or other dam-
Circle
age affecting proper seal.
Tighten loose screws and nuts.
Purge elbow telescope if optical sys-
tem shows signs of fogging or traces
of humidity. Refer to TM 750-116.
Section
Ill.
UNIT
TROUBLESHOOTING
Section Index
Paragraph
Page
Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
a. The symptom index can be used as a quick guide to troubleshooting. Common malfunctions
are listed in alphabetical order, under each major assembly which appears in MAC order, with page
number references to the troubleshooting table where a test or inspection and corrective action are
provided.
b. There is no unit level troubleshooting on the M2A2 Aiming Circle. The table lists the common
malfunctions which you may find during the operation or maintenance of the M51 Instrument Light.
You should perform the tests/inspections and corrective actions in the order listed.
