TM 5-6115-275-14
NAVFAC P-8-615-14
TO 35C2-3-452-1
f.
Testing.
(1)
Rotating
Rectifier.
Test
across
each
rectifier diode for continuity which must be indicated in
one direction only.
(2)
Rotors.
(a)
Using leads disconnected from the
rotating rectifier, test continuity of the rotor windings. Use
a test lamp or multimeter and test through windings. If
continuity is not indicated, an open or short is present
and must be isolated.
(b)
Use a megohmmeter to test coil
insulation. Test between the shaft and each lead on both
rotors. A reading of less than 1.0 megohm indicates
faulty insulation.
(3)
Stators.
(a)
Test the exciter stator (field winding)
for continuity through the windings. Use pins 1U and 13
on the generator receptacle. If continuity , not indicated,
each coil must be tested individually to locate the open.
(b)
Test alternator stator windings for
continuity at the receptacle (see figure 8-7). Test across
pins 5 and 8, 2 and 12, 6 and 9, 3 and 14, 7 and 10, and
1 and 4. Failure to obtain continuity indicates an open
coil which must be repaired or replaced.
Figure 8-7 Lead connections (Model MEP-018A).
8-10
