TM 5-4310-343-35
WARNING : USE SOLVENT in A WELL VENTILATED AREA.
AVOID BREATHING
FUMES. KEEP AWAY FROM OPEN FLAMES.
(f) Inspection.
(1) ALL PARTS. Must show no signs of damage, corrosion or deterioration. Threaded areas must
not be distorted.
(2) MO TOR ARMATURE.
Must have no turns out of place.
Windings must show no shorts,
grounds, or open circuits. Resistance between No. 1 and No. 8 segment bars must be 0.004 -( 10 per cent) ohm at a
temperature of 27 C (80 F).
Commutator must not be worn down to segment insulators. Face of commutator must be concentric with shaft to within
0.001 inch total indicator reading. Shaft must be perpendicular with bearing lands to within 0.001 inch total indicator
reading.
(3) STATOR. Must have no turns out of place. Windings must show no shorts, grounds, or open
circuits. Resistance of shunt winding must be 6.69 (+10 per cent) ohms at temperature of 27C (80F). Resistance of
series winding must be 0.005 ( 10 per cent) ohm at temperature of 27C (80F). Leads and terminals must be securely
soldered in place.
(4) RADIO INTERFERENCE FILTER. Resistance between input terminal and ground must be not
less than 2 megohms as indicated on a 100-volt megohm meter.
(5) END BELL ASSEMBLY. Brush boxes must be riveted firmly to their support ring, and must show
no grounds to end bell. Brush springs must
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