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51
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2) Cleaning Slip rings
The slip ring surfaces must be uniformly bright.
Slip rings showing black spots, excessive wear,
or uneven wear must be repaired. A stained slip
ring lowers generator efficiency and output volt-
age. Polish the slip rings with fine sandpaper while
turning the rotor until rough spots disappear. Care
should be taken not to touch the rotor coils with
the sandpaper.
11-2 AC VOLTAGE IS TOO HIGH OR TOO LOW
11-2-1 CHECKING ENGINE SPEED
If the engine speed is too high or too low, adjust it
to the rated r.p.m.
[How to adjust engine r.p.m.]
* Loosen the lock nut on the adjusting screw.
* Turn the adjusting screw clockwise to decrease
engine speed or counterclockwise to increase
engine speed.
11-2-2 CHECKING STATOR
Check stator referring to Step 11-1-1.
11-2-3 CHECKING ROTOR
Check rotor referring to Step 11-1-2.
Fig. 11-4
Fig. 11-5
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epytzH06rofmpr0573ot0073
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