TM 9-4940-549-14&P
Testing.
b.
(1) Test the windings of the exciter and direct current welder por-
tions of the armature for insulation resistance, open circuits,
and short circuits, as directed in TM 5-764. Resistance between
any two commutator bars of either exciter or welder portion
should be 0.25 ohm.
(2) Tag and disconnect the wiring leads from the armature sliprings
and test the windings of the alternator portion of the armature
for insulation resistance of 10 ohms, plus or minus 10 percent,
open circuits, and short circuits as directed in TM 5-764.
Disassembly. Refer to figure 13-8 and disassemble the armature in
c.
numerical sequence.
Reassembly. Refer to figure 13-8 and reassemble armature in re-
d.
verse numerical sequence and manner. Before reassembly, clean and
repack bearings with grease, automotive and artillery (GAA).
Installation.
e.
(1) Install the armature as illustrated in figure 13-7.
(2) Install the dynamotor-welder brushes (para. 13-4).
LEGEND FOR FIGURE 13-8:
Dynamotor-Welder Armature, Disassembly and Assembly.
