Procedures column of table 4-1, report the failure in
accordance with the procedures specified in TM 38-750.
Dangerous voltages exist at the AS-
d. If the equipment must be kept in constant
operation, check and service only those items that can
Personnel should be familiar with the
be done without disturbing operation.
requirements of TB SIG 291 before
complete checks and services when the equipment can
be shut down.
4-1. Scope of Organizational Maintenance
e. Routine checks are not listed in the PMCS
Organizational maintenance of the AS-2731/GRC
consists of the following:
checking for frayed cables; stowing items not in use;
nuts and bolts. These are things that should be done
anytime you see they must be done.
4-2. Test Equipment, Tools and Materials Re-
4-4. Touchup Painting
a. When the finish on any metal parts of the MX-
Organizational repair parts are listed in TM 11-5985-355-
9146/GRC has been badly scarred or damaged by
corrosion, lightly clean the surfaces with sandpaper.
a. Test Equipment.
Brush two thin coats of paint (item 5, app E) on the bare
metal surface (previously painted areas only) to protect it
(2) Test Set, RF Power AN/URM-182 (TS-
from further corrosion. Refer to the applicable painting
and refinishing instructions given in SB 11-57:3 and TB
b. Tools. Tool Kit, Electronic Equipment TK-
101/G. (Torque wrench, 0-100 inch-pounds is part of the
b. The plastic body of the MX-9146/GRC shall be
painted only with paint type recommended per MIL-F-
c. Materials. See appendix E for available
14072 (item 8, app F), and the surface should be
cleaned with a clean cloth dampened with water and
4-3. Organizational Preventive Maintenance
soap. Do not attempt to remove the paint. The paint
Checks and Services (PMCS)
remover solvent will damage the plastic surface. If the
Preventive maintenance is the systematic care,
vehicle is to be painted. remove the -IX-91461/GRC.
inspection, and servicing of equipment to maintain it in
4-5. Organizational Maintenance Trouble-
serviceable condition, prevent breakdowns, and assure
maximum operational capability.
Perform the applicable organizational maintenance
preventive maintenance checks and services (PMCS)
procedure using the technical manual for the radio set
are performed quarterly (table 4-1).
which the AS-2731/GRC is used. If it is determined that
Quarterly PMCS will be scheduled in
accordance with procedures specified in TM 38-750.
troubleshooting operations given in the troubleshooting
b. The Item No. in table 4-1 shall be used as a
chart (table 4-2). If the corrective measures given in the
source of item numbers for the TM number column on
chart do not clear the trouble, higher category
DA Form 2404 (Equipment Inspection and Maintenance
maintenance is required.
Worksheet) in recording the results of the PMCS.
c. If the equipment fails to meet the criteria in the
Change 2 4-1