Section I. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
3-1. Scope of Maintenance
The maintenance duties assigned to the
Refer to TM 750-244-2 for proper pro-
organizational electronic equipment repairman or
cedures for destruction of this equip-
crew chief are listed below together with a
ment to prevent enemy use.
reference to the paragraphs covering the specific
maintenance functions. The tools and materials
procedures are designed to help maintain equip-
required are listed in paragraph 3-2.
ment in serviceable condition. They include
a. Organizational intermediate and periodic
items to be checked and how to check them.
preventive maintenance checks and services
These checks and services, described in para-
graph 3-5, outline inspections that are to be
b. Paragraph 3-lb deleted.
made at the periodic and intermediate mainte-
c. Cleaning (para 3-3 b).
Intermediate and periodic
d. Preservation (para 3-7).
maintenance intervals depend upon the aircraft
e. Organizational troubleshooting (paras 3-10
service intervals established for the aircraft in
which the radio set is to be used.
f. Removal and replacement of panel lamps
(1) INTERMEDIATE AND PERIODIC
PMCS are important checks to keep serious
g. Removal and replacement of receiver-
problems from suddenly happening.
transmitter (para 3-13).
(2) Use the ITEM NO. column in the PMCS
h. Removal and replacement of radio set
table to get the number to be used in the TM
control (para 3-17).
ITEM NO. column on DA Form 2404 (Equip-
i. Removal and replacement of external blower
ment Inspection and Maintenance Worksheet)
when you fill out the form.
j. Removal and replacement of external blower
b. Routine checks like CLEANING, PRESER-
filter and blower fuse F1 (para 3-14).
k. Removal and replacement of reflectome-
VATION, DUSTING, WASHING, CHECKING
FOR FRAYED CABLES, STOWING ITEMS
ter (para 3-16).
l. Presetting channels (C-6287/ARC-5lBX
NOT IN USE, COVERING UNUSED RECEP-
TACLES, CHECKING FOR LOOSE NUTS
only) (para 3-18).
AND BOLTS AND CHECKING FOR COM-
3-2. Tools and Materials Required
PLETENESS are not listed as PMCS checks.
a. Tool Kit, Operations Central TK-101/G.
They are things that you should do any time
b. Brush MIL-G-7241.
you see they must be done. If you find a rou-
c. Lens tissue paper.
tine check like one of those listed in your PMCS,
d. Trichlorotrifluoroethane (NSN 6850-00-
it is because other operators reported problems
with this item.
e. Sandpaper, fine No. 000.
f. Safety wire, annealed corrosion-resistant,
When you are doing any PMCS or
steel, spool, 0.032 in. (NSN 9505-00-554-1421).
routine checks, keep in mind the warn-
ings and cautions.
3-3. Organizational Preventive Maintenance