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n
Check the insulation resistance between
stator core and each stator lead using a Dr.
Robin generator tester in megger tester mode
or a megger tester. (Fig. 11-3)
If insulation is bad, replace stator with a new
one.
1 l-1 -3
CHECKING ROTOR
(1) CHECKING FIELD COIL
n
Remove rear cover and stator.
Fig. 11-4
n
Using a Dr. Robin or a circuit tester, measure the resistance of the field coil at the terminals.
(RxlQ flO%)
MODEL RGX1800 RGX2400
RGXSOO
6ow
RgEy
RGX!iSOO
RESISTANCE
2.5 C-2
2.7 Q
2.1 n
2.2 a
1.6Q
Table 11-2
NOTE I : Because a diode is soldered to the coil
ends at the terminals, resistance may
be measured only when tester probes
touch the terminals in one combination
of polarity- Therefore, if no resistance
reading appears, try checking in
reverse polarity.
IRemedy
If the resistance is not normal, replace rotor with a
new one.
Fig. 11-5
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