ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
4-32
(j)
Using a growler tester, place armature on it and hold a hacksaw blade against armature
core while slowly rotating armature, refer to Figure 4-27. A short circuited armature
causes blade to vibrate and be attracted to core. An armature which is short circuited must
be replaced.
FIGURE 4-27. GROWLER TEST
(k) Set multimeter for ohms and touch one probe to a commutator segment and other one to
armature core, refer to Figure 4-28. There should be no continuity, armature is grounded.
Replace armature if grounded.
FIGURE 4-28. TESTING FOR GROUNDED WINDINGS
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