TM 11-5840-281-35/1
CHAPTER 5
GENERAL SUPPORT MAINTENANCE
Section I. GENERAL
b.
Equipment
removal-replacement
and
5-1.
General
disassembly-reassembly (para 5-7 through 5-29).
The maintenance duties of the general support
c. Magnetron spectrum testing (para 5-31).
maintenance repairman include the maintenance
responsibilities of the direct support maintenance
repairman, in addition to those duties listed in a through c
5-2.
Tools, Test
Equipment,
and
Materials
below.
Refer to paragraphs 3-3 through 3-14 for
Required
troubleshooting procedures and information. Refer to
Refer to the maintenance allocation chart (MAC) in TM
performance standards, which are used after equipment
11-840-281-12 for the allocation of maintenance
repair to insure that the equipment is operating
responsibilities, tools, and test equipment. Refer to TM
satisfactorily.
11-5840-281-35P for applicable repair parts list.
a. Equipment repair (para 63 through 5-6).
Section II REPAIR PROCEDURES
knife, starting at eyelet, and burnish tab flat against
5-3. General
circuit board. This action straightens out tab.
(3) Place piece of Teflon (1 by 1/2 inches)
The general support maintenance repair procedures in
against top of tab next to eyelet. This supplies back-up
while burnishing bottom of tab. Burnish bottom of tab
repairing etched circuit cards, coaxial cables, and
until bright copper color is observed (view 2).
interconnecting (multiconductor) cables.
CAUTION
Do not bend the tab up from the circuit board
more than 90 degrees.
The plug-in feature of circuit cards that are constructed
(4) Remove all old adhesive by burnishing area
with etched circuit boards provides a rapid means of
on board where tab will be located.
isolating trouble by circuit card substitution. The etched
(5) Press tab down on board and burnish top of
circuit cards must be maintained in a state of
tab
cleanliness. Any accumulation of grease, dust, moisture,
(6) Cut 1/2-inch strip of Teflon.
fungus growth, or residue from cleaning fluid may form a
(7) Cut fine feather edge on one end of cotton
current leakage path which would affect the desired
applicator.
function of an etched circuit card.
(8) Apply very small amount of Eastman
adhesive to feathered edge. Remove all droplets from
a. Repair of Etched Card with Loose Tabs.
applicator feathered edge.
(9) Very quickly apply adhesive to copper
(1) Place edge of knife between damaged tab
surface on underside of tab and on corresponding
and circuit board. Peel tab back to eyelet (view 1).
surface on circuit board.
Prevent tab from rolling up while peeling back.
(2) After tab is loose from circuit board, use
5-1
Previous Page
